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  • Any and all SANYO products described or contained herein do not have specifications that can handleapplications that require extremely high levels of reliability, such as life-support systems, aircraftscontrol systems, or other applications whose failure can be reasonably expected to result in seriousphysical and/or material damage. Consult with your SANYO representative nearest you before usingany SANYO products described or contained herein in such applications.

    SANYO assumes no responsibility for equipment failures that result from using products at values thatexceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or otherparameters) listed in products specifications of any and all SANYO products described or containedherein.

    Thick Film Hybrid IC

    3-Channel Convergence Correction Circuit(IC max = 3A)

    Ordering number:ENN5170

    STK392-110

    SANYO Electric Co.,Ltd. Semiconductor CompanyTOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

    93099TH (KT)/80995HA (ID) No.51701/4

    1 18

    55.6

    64.0

    21.0 31

    .0

    16.5

    (6.21) 172.54=43.18

    3.6

    0.52.54

    8.5

    0.42.9

    5.5

    4.0

    25.8

    Package Dimensionsunit:mm

    4083

    [STK392-110]

    OverviewThe STK392-110 is a convergence correction circuit IC forvideo projectors. It incorporates three output amplifiers ina single package, making possible the construction of CRThorizontal and vertical convergence correction output cir-cuits for each of the RGB colors using ust two hybrid ICs.The output circuit use a class-B configuration, in compari-son with the STK392-010, realizing a more compact pack-age and lower cost.

    Applications Video projectors

    Features 3 output amplifier circuits in a single package High maximum supply voltage (VCC max = 38V) Low thermal resistance (j-c=3.0C/W) High temperature stability (TC max=125C) Separate predriver and output stage supplies Output stage supply switching for high-performance

    designs Low inrush current when power is applied

    Series OrganizationThe following devices form a series with varying output capacity and application grade. Some of the devices below areunder development, so contact your nearest sales representative for details.

    3.0C/W

    .oNepyTsgnitarmumixaM ycneuqerflatnozirohmumixaM

    fH xamedargnoitacilppA

    V CC xam IC xam c-j

    011-293KTS V83 A3 zHk51 sVTnoitcejorplareneG

    010-293KTS V83 A5 zHk51 sVTnoitcejorplareneG

    020-293KTS V44 A6 zHk53 AGV,DH

    040-293KTS V05 A7 zHk001 MAC,DAC,AGX

    012-293KTS V56 A8 zHk031 MAC,DAC

    022-293KTS V57 A01 zHk061 MAC,DAC

    2.6C/W

    2.1C/W

    1.8C/W

    1.5C/W

    1.3C/W

    SANYO : SIP18

  • STK392-110

    No.51702/4

    SpecificationsMaximum Ratings at Ta = 25C

    C

    C

    C

    C/W

    Operating Characteristics at Ta = 25C, Rg=50, VCC=30V, specified test circuit

    retemaraP lobmyS snoitidnoC sgnitaR tinU

    egatlovylppusmumixaM V CC xam 83 V

    tnerrucrotcellocmumixaM IC 12,02,41,31,7,6rT 0.3 A

    ecnatsiserlamrehT c-j )rotsisnartrep(12,02,41,31,7,6rT 0.3erutarepmetnoitcnuJ jT 051

    erutarepmetgnitarepO cT 521

    erutarepmetegarotS gtsT 521+ot03

    retemaraP lobmyS snoitidnoCsgnitaR

    tinUnim pyt xam

    egatlovesiontuptuO V ON 2.0 smrVm

    tnerructnecseiuQ I OCC 51 22 03 Am

    egatlovlartueN VN 05 0 05+ Vm

    emityaledtuptuO tD V,tupnievawralugnairt,zHk57.51=f TUO p-pV5.1= 1 s

    Note :All tests are conducted using a constant-voltage regulated supply unless otherwise specified.The output noise voltage is the peak value of an average-reading meter with an rms value scale (VTVM).

    Block Diagram

  • STK392-110

    No.51703/4

    Equivalent Circuit

    Test Circuit

  • Specifications of any and all SANYO products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guaranteesof the performance, characteristics, and functions of the described products as mounted in the customer'sproducts or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment.

    SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and allsemiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,or that could cause damage to other property. When designing equipment, adopt safety measures sothat these kinds of accidents or events cannot occur. Such measures include but are not limited to protectivecircuits and error prevention circuits for safe design, redundant design, and structural design.

    In the event that any or al l SANYO products(including technical data,services) described or contained herein are controlled under any of applicable local export control laws and regulations,such products must not be expor ted without obtaining the expor t l icense from the authorit iesconcerned in accordance with the above law.

    No part of this publication may be reproduced or transmitted in any form or by any means, electronic ormechanical, including photocopying and recording, or any information storage or retrieval system,or otherwise, without the prior written permission of SANYO Electric Co. , Ltd.

    Any and all information described or contained herein are subject to change without notice due toproduct/technology improvement, etc. When designing equipment, refer to the "Delivery Specification"for the SANYO product that you intend to use.

    Information (including circuit diagrams and circuit parameters) herein is for example only ; it is notguaranteed for volume production. SANYO believes information herein is accurate and reliable, butno guarantees are made or implied regarding its use or any infringements of intellectual property rightsor other rights of third parties.

    This catalog provides information as of September, 1999. Specifications and information herein are

    subject to change without notice.

    STK392-110

    PS No.51704/4

    Sample Application Circuit

  • Ordering number : ENN7065A

    D0102AS (OT) No. 7065-1/5

    OverviewThe STK402-000 series products are audio poweramplifier hybrid ICs that consist of optimally-designeddiscrete component power amplifier circuits that havebeen miniaturized using SANYO's unique insulated metalsubstrate technology (IMST). SANYO has adopted a newlow thermal resistance substrate in these products toreduce the package size by about 60% as compared to theearlier SANYO STK407-000 series.

    Features

    Series of pin compatible power amplifiers ranging from20 W 2 channels to 120 W 2 channels (10%/1 kHz)devices. The same printed circuit board can be useddepending on the output power grade.

    The pin arrangement is compatible with that of the 3-channel STK402-200 series. This means that 3-channelprinted circuit boards can also be used for 2-channelproducts.

    Miniature packages 15 W/ch to 40 W/ch (THD = 0.4%, f = 20 Hz to

    20 kHz); 46.6 mm 25.5 mm 8.5 mm * 50 W/ch to 80 W/ch (THD = 0.4%, f = 20 Hz to

    20 kHz); 59.2 mm 31.0 mm 8.5 mm **: Not including the pins.

    Output load impedance: RL = 6 Allowable load shorted time: 0.3 seconds Supports the use of standby, muting, and load shorting

    protection circuits.

    Package Dimensionsunit: mm

    4190-SIP15

    59.2

    52.0

    (12)

    3.6

    2.0

    14X2=28

    0.5

    15

    8.5

    0.4

    2.9

    16.5 21

    .0

    4.0

    1.03

    1.0

    1

    SANYO: SIP15

    [STK402-090]

    STK402-090

    SANYO Electric Co.,Ltd. Semiconductor CompanyTOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

    Two-Channel Class AB Audio Power Amplifier IC 50 W + 50 W

    Thick-Film Hybrid IC

    Any and all SANYO products described or contained herein do not have specifications that can handleapplications that require extremely high levels of reliability, such as life-support systems, aircraftscontrol systems, or other applications whose failure can be reasonably expected to result in seriousphysical and/or material damage. Consult with your SANYO representative nearest you before usingany SANYO products described or contained herein in such applications.

    SANYO assumes no responsibility for equipment failures that result from using products at values thatexceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or otherparameters) listed in products specifications of any and all SANYO products described or containedherein.

  • No. 7065-2/5

    STK402-090

    ItemType No.

    STK402-020 STK402-030 STK402-040 STK402-050 STK402-070 STK402-090 STK402-100 STK402-120

    Output 1 (10%/1 kHz) 20 W + 20 W 30 W + 30 W 40 W + 40 W 45 W +45 W 60 W + 60 W 80 W + 80 W 100 W + 100 W 120 W + 120 W

    Output 2 (0.4%/20 Hz to 20 kHz) 15 W + 15 W 20 W + 20 W 25 W + 25 W 30 W + 30 W 40 W + 40 W 50 W + 50 W 60 W + 60 W 80 W + 80 W

    Maximum supply voltage30 V 34 V 38 V 40 V 50 V 54 V 57 V 65 V(No signal)

    Maximum supply voltage28 V 32 V 36 V 38 V 44 V 47 V 50 V 57 V(6 )

    Recommended supply voltage19 V 22 V 25 V 26.5 V 30 V 32 V 35 V 39 V(6 )

    Package 46.6 mm 25.5 mm 8.5 mm 59.2 mm 31.0 mm 8.5 mm

    Series Organization

    Parameter Symbol Conditions Ratings Unit

    Maximum supply voltage (No signal) VCC max(0) 54 V

    Maximum supply voltage VCC max(1) RL = 6 47 V

    Thermal resistance j-c Per power transistor 2.2 C/W

    Junction temperature Tj maxBoth the Tj max and the Tc max conditions must be met.

    150 C

    Operating IC substrate temperature Tc max 125 C

    Storage temperature Tstg 30 to +125 C

    Allowable load shorted time *2 ts VCC = 32.0 V, RL = 6 , f = 50 Hz, PO = 50 W 0.3 s

    SpecificationsMaximum Ratings at Ta = 25C

    These products are organized as a series based on their output capacity.

    Parameter SymbolConditions*1 Ratings

    UnitVCC (V) f (Hz) PO (W) THD (%) min typ max

    Output powerPO (1) 32.0 20 to 20 k 0.4 47 50

    WPO (2) 32.0 1 k 10 80

    Total harmonic distortionTHD (1) 32.0 20 to 20 k 1.0 VG = 30 dB 0.4

    %THD (2) 32.0 1 k 5.0 VG = 30 dB 0.01

    Frequency characteristics fL, fH 32.0 1.0 +0 3 dB 20 to 50 k Hz

    Input impedance ri 32.0 1 k 1.0 55 k

    Output noise voltage *3 VNO 39.0 Rg = 2.2 k 1.2 mVrms

    Quiescent current ICCO 39.0 10 40 80 mA

    Neutral voltage VN 39.0 70 0 +70 mV

    Operating Characteristics at Tc = 25C, RL = 6 (noninductive load), Rg = 600 , VG = 30 dB

    Notes: 1. Unless otherwise noted, use a constant-voltage supply for the power supply used during inspection.2. Use the transformer power supply circuit stipulated in the figure below for allowable load shorted time measurement and output noise voltage

    measurement.

    DBA40C 10000 F

    10000 F

    500

    500

    +VCC

    --VCC

    Stipulated Transformer Power Supply (MG-200 equivalent)3. The output noise voltage values shown are peak values read with a VTVM. However, an AC stabilized (50 Hz) power supply should be used to

    minimize the influence of AC primary side flicker noise on the reading.

  • No. 7065-3/5

    STK402-090

    Internal Equivalent Circuit

    TR4

    TR1

    TR6

    R2 R7

    R1

    R3

    R4

    R6C1

    R5TR3

    TR21

    4

    2

    13

    7125 6

    TR5

    TR7

    TR8

    D1

    SUB

    TR11

    TR15

    TR13

    R14R9

    R13

    R11

    R12

    R8 C2

    R10TR16

    TR14

    11

    9

    10

    8

    14 15

    TR12

    TR9

    TR10

    Sample Application Circuit

    Ch.1IN

    Ch.1NF

    Pre-VCC

    Pre+VCC -VCC+VCCBIAS

    Ch.2+VE

    Ch.2NF

    SUBGND

    Ch.2IN

    Ch.2-VE

    Ch.1+VE

    Ch.1-VE

    1 2 4 5 6 7 8 9 10 11 12 13 14 15

    Ch.2 IN

    -VCC

    470p

    F0.

    1F

    1.8k

    56k

    10k

    0.22

    0.22

    0.22

    0.22

    4.7

    33F

    3pF

    220pF 2.2F 1k

    56k

    100

    F

    10F 100

    3H

    SUB

    Ch.2 OUT4.7

    Ch.1 IN

    +VCC

    470p

    F0.

    1F

    1.8k

    56k

    4.7

    33F

    3pF

    220pF2.2F1k

    56k

    100

    F

    10F100

    3H

    Ch.1 OUT4.7

    Ch.2Ch.1

  • No. 7065-4/5

    STK402-090

    Thermal Design Example

    The thermal resistance, c-a of the required heat sink for the power dissipation, Pd, within the hybrid IC is determined asfollows.

    Condition 1: The IC substrate temperature, Tc, must not exceed 125C.

    Pd c a + Ta < 125C . . . . . . . . . (1)Ta: Guaranteed ambient temperature for the end product.

    Condition 2: The junction temperature, Tj, of each power transistor must not exceed 150C.

    Pd c a + Pd/N j c + Ta < 150C . . . . . . . . . (2)N: Number of power transistorsc-a: Thermal resistance per power transistor

    However, the power dissipation, Pd, for the power transistors shall be allocated equally among the N transistors.The following inequalities results from solving equations (1) and (2) for c-a.

    c a < (125 Ta) /Pd . . . . . . . . . . . . . . . . . . (1)c a < (150 Ta) /Pd j c/N . . . . . . . . . (2)

    Values that satisfy these two inequalities at the same time represent the required heat sink thermal resistance.When the following specifications have been stipulated, the required heat sink thermal resistance can be determined fromformulas (1) and (2).

    Supply voltage VCC

    Load resistance value RL

    Guaranteed ambient temperature Ta

    [Example]

    When the IC supply voltage, VCC, is 32 V and RL is 6 , the IC internal power dissipation, Pd, will be a maximum of72 W for a continuous sine wave signal at 1 kHz, according to the Pd PO characteristics.

    For the music signals normally handled by audio amplifiers, a value of 1/8 PO max is generally used for Pd as an estimateof the power dissipation based on this type of continuous signal. (Note that the factor used may differ depending on thesafety standards used.)

    That is:

    Pd = 48 W (When 1/8 PO max = 6.25 W)

    The number of power transistors in the audio amplifier block of these hybrid ICs, N, is 4, and the thermal resistance pertransistor is 2.2C/W. Therefore, the required heat sink thermal resistance for a guaranteed ambient temperature of 50Cwill be as follows.

    From formula (1) c a < (125 50) /48< 1.56

    From formula (2) c a < (150 50) /48 2.2/4< 1.53

    Therefore, 1.53C/W is the required heat sink thermal resistance.

    Note that this thermal design example assumes the use of a constant-voltage power supply, and is therefore not a verifieddesign for any particular user's end product.

  • PS No. 7065-5/5

    STK402-090

    ITF021571k10 100

    50

    40

    30

    20

    10

    0

    60

    100

    80

    90

    70

    2 3 5 7 2 3 5 7 2 3 5 7 2 3 5 710k 100k

    RL = 6 , VCC = 32 V, THD = 10 %

    RL = 6 , VCC = 32 V, THD = 0.4 %

    Tc = 25 CVG = 30 dBRg = 600

    PO -- f

    Out

    put p

    ower

    , P O

    --

    W

    Frequency, f - Hz

    ITF02155

    0.0011.00.1

    0.017532

    0.17532

    1.07532

    107532

    1007532

    2 3 5 72 3 5 7 10 2 3 5 7 100

    20 kHz

    20 Hz

    1 kHz

    Tc = 25 CVCC = 32 VVG = 30 dBRL = 6 Rg = 600

    THD -- PO

    Tota

    l har

    mon

    ic d

    isto

    rtio

    n, T

    HD

    --

    %

    Output power, PO -- WITF02168

    01.00.1

    80

    60

    70

    50

    40

    30

    20

    10

    2 3 5 72 3 5 7 10 2 3 5 7 100

    RL = 6 VCC = 32 Vf = 1kHzVG = 30 dBRg = 600 2ch drive

    Pd -- PO

    Tota

    l dev

    ice

    pow

    er d

    issi

    patio

    n P

    d --

    W

    Output power, PO / ch -- W

    This catalog provides information as of December, 2002. Specifications and information herein aresubject to change without notice.

    Specifications of any and all SANYO products described or contained herein stipulate the performance,characteristics, and functions of the described products in the independent state, and are not guaranteesof the performance, characteristics, and functions of the described products as mounted in the customersproducts or equipment. To verify symptoms and states that cannot be evaluated in an independent device,the customer should always evaluate and test devices mounted in the customers products or equipment.

    SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and allsemiconductor products fail with some probability. It is possible that these probabilistic failures couldgive rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,or that could cause damage to other property. When designing equipment, adopt safety measures sothat these kinds of accidents or events cannot occur. Such measures include but are not limited to protectivecircuits and error prevention circuits for safe design, redundant design, and structural design.

    In the event that any or all SANYO products (including technical data, services) described or containedherein are controlled under any of applicable local export control laws and regulations, such products mustnot be exported without obtaining the export license from the authorities concerned in accordance with theabove law.

    No part of this publication may be reproduced or transmitted in any form or by any means, electronic ormechanical, including photocopying and recording, or any information storage or retrieval system,or otherwise, without the prior written permission of SANYO Electric Co., Ltd.

    Any and all information described or contained herein are subject to change without notice due toproduct/technology improvement, etc. When designing equipment, refer to the Delivery Specificationfor the SANYO product that you intend to use.

    Information (including circuit diagrams and circuit parameters) herein is for example only; it is notguaranteed for volume production. SANYO believes information herein is accurate and reliable, butno guarantees are made or implied regarding its use or any infringements of intellectual property rightsor other rights of third parties.

  • Ordering number : ENN7374

    D2503TN (OT) No. 7374-1/8

    OverviewThe STK403-400 series products are audio poweramplifier hybrid ICs that consist of optimally-designeddiscrete component power amplifier circuits that havebeen miniaturized using SANYO's unique insulated metalsubstrate technology (IMST). The adoption of a newly-developed low thermal resistance substrate allows thisproduct to integrate six power amplifier channels in asingle compact package. The adoption of a standby circuitin this device allows it to reduce impulse noisesignificantly as compared to earlier Sanyo products, inparticular, the STK402-*00 series products.

    Features

    Series of pin compatible power amplifiers ranging from30 W/ch to 45 W/ch (10%/1 kHz) devices. The sameprinted circuit board can be used depending on theoutput power grade.

    Miniature packages 78.0 mm 32.0 mm 9.0 mm *

    *: Not including the pins. Output load impedance: RL = 6 Allowable load shorted time: 0.3 seconds Supports the use of standby and muting circuits.

    Package Dimensionsunit: mm

    4202-SIP28

    SANYO: SIP28

    [STK403-430]

    STK403-430

    SANYO Electric Co.,Ltd. Semiconductor CompanyTOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

    Six-Channel Class AB Audio Power Amplifier IC 20 W 6 Channels

    Thick-Film Hybrid IC

    Any and all SANYO products described or contained herein do not have specifications that can handleapplications that require extremely high levels of reliability, such as life-support systems, aircraftscontrol systems, or other applications whose failure can be reasonably expected to result in seriousphysical and/or material damage. Consult with your SANYO representative nearest you before usingany SANYO products described or contained herein in such applications.

    SANYO assumes no responsibility for equipment failures that result from using products at values thatexceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or otherparameters) listed in products specifications of any and all SANYO products described or containedherein.

  • No. 7374-2/8

    STK403-430

    ItemType No.

    STK403-430 STK403-440 STK403-450

    Output 1 (10%/1 kHz) 30 W 6 ch 40 W 6 ch 45 W 6 ch

    Output 2 (0.6%/20 Hz to 20 kHz) 20 W 6 ch 25 W 6 ch 30 W 6 ch

    Maximum supply voltage (No signal) 36 V 38 V 40 V

    Maximum supply voltage (6 ) 34 V 36 V 38 V

    Recommended supply voltage (6 ) 23 V 26 V 28 V

    Package 78.0 mm 32.0 mm 9.0 mm

    Series Organization

    SpecificationsMaximum Ratings at Ta = 25C

    These products are organized as a series based on their output capacity.

    Operating Characteristics at Tc = 25C, RL = 6 (noninductive load), Rg = 600 , VG = 30 dB

    Notes: 1. 1ch drive2. Unless otherwise noted, use a constant-voltage supply for the power supply used during inspection.3. Use the transformer power supply circuit shown in the figure below for allowable load shorted time measurement and output noise voltage

    measurement.4. The output noise voltage values shown are peak values read with a VTVM. However, an AC stabilized (50 Hz) power supply should be used to

    minimize the influence of AC primary side flicker noise on the reading.5. Design applications so that the minus pre-VCC line (pin 17) is the lowest potential applied to the IC at all times.6. A limiting resistor that assures that the maximum operating current flowing into the standby pin (pin 23) does not exceed the maximum rating must

    be included in application circuits. This IC operates when a voltage higher than VBE (about 0.6 V) is applied to the standby pin.

    4700F

    4700F

    DBA30C

    500

    500

    +VCC

    --VCC

    +

    +

    Designated Transformer Power Supply (RP-25 equivalent)

    Parameter Symbol Conditions Ratings Unit

    Maximum supply voltage (No signal) VCC max(0) 36 V

    Maximum supply voltage VCC max(1) RL 6 34 V

    Minimum operating supply voltage VCC min 10 V

    Maximum operation flow-in current (pin 23) IST OFF max 1.2 mA

    Thermal resistance j -c Per power transistor 3.6 C/W

    Junction temperature Tj maxBoth the Tj max and the Tc max conditions must be met.

    150 C

    Operating IC substrate temperature Tc max 125 C

    Storage temperature Tstg 30 to +125 C

    Allowable load shorted time *4 ts VCC = 23.0 V, RL = 6 , f = 50 Hz, PO = 20 W, 1ch drive 0.3 s

    Parameter SymbolConditions*1 Ratings

    UnitVCC (V) f (Hz) PO (W) THD (%) min typ max

    PO (1) 23.0 20 to 20 k 0.6 18 20Output power *1

    PO (2) 23.0 1 k 10 30W

    THD (1) 23.0 20 to 20 k 5.0 VG = 30 dB 0.6Total harmonic distortion *1

    THD (2) 23.0 1 k 5.0 VG = 30 dB 0.03%

    Frequency characteristics fL, fH 23.0 1.0 +0 3 dB 20 to 50 k Hz

    Input impedance ri 23.0 1 k 1.0 55 k

    Output noise voltage *2 VNO 28.0 Rg = 2.2 k 1.0 mVrms

    Quiescent current ICCO 28.0 No loading 60 110 180 mA

    Neutral voltage VN 28.0 70 0 +70 mV

    Current flowing into pin 23 IST ON 23.0

    V23 = 5 V, current Limiting 0 mAin standby mode *6 resistance: 6.2 k

    Current flowing into pin 23 IST OFF 23.0 0.4 1.2 mAin operating mode *6

  • No. 7374-3/8

    STK403-430

    Internal Equivalent Circuit

    11

    56

    78

    9 23 19 18

    2 3 4 1 10 12 13 16 15

    Pre

    Driv

    er IC

    (CH

    2 / C

    H3)

    Pre

    Driv

    er IC

    (CH

    1)

    Bia

    s C

    ircui

    t

    2425

    2627

    28P

    re D

    river

    IC(C

    H5

    / CH

    6)222120 17 14

    Pre

    Driv

    er IC

    (CH

    4)

    ITF0

    2247

    C13

    TR7

    TR8

    TR17SU

    B

    TR16

    C16

    C12

    TR4

    TR5

    C15

    TR13

    TR14

    C11

    TR1

    TR2

    C14

    TR10

    TR11

    TR9R

    24

    R25

    TR6

    R22

    R23

    TR3R

    20

    R21

    R5

    R6

    R3

    R4

    R1

    R2

    TR12R

    27

    R26

    TR15

    R29

    R28

    TR18R

    31

    R30

    R8

    R7

    R10

    R9

    R12

    R11

    C3

    C2

    C1

    C4

    C5

    C6

  • No. 7374-4/8

    STK403-430

    Sample Application Circuit

    2827

    2625

    2423

    2221

    2019

    1817

    1615

    1413

    1211

    109

    87

    65

    43

    21

    ST

    K40

    3-40

    0 se

    ries

    Ch1

    OUT

    +PRE

    --PRE

    Ch1 IN

    Ch1

    NFCh

    2NF

    Ch2 IN

    Ch3 IN

    Ch3

    NFCh

    3O

    UTCh

    2O

    UT+V

    CC--V

    CC--V

    CC+V

    CCCh

    4O

    UTCh

    5O

    UTSU

    BG

    NDG

    ND

    SUB

    +PRE

    Ch4 IN

    Ch4

    NFBI

    AS(S

    T-BY

    )Ch

    5NF

    Ch5 IN

    Ch6 IN

    Ch6

    NFCh

    6O

    UT

    Ch6

    INC

    h1IN C

    h2IN C

    h3IN

    Ch5

    IN Ch4

    IN

    1k

    2.2

    F 3F

    0.1F

    10F

    100F

    1k

    2.2

    F

    1k

    2.2

    F56k

    470pF

    1k

    2.2

    F

    56k

    470pF

    1k

    2.2

    F

    56k

    470pF

    1k

    2.2

    F

    56k

    470pF

    56k

    1.8k3k

    3k

    3k

    6.2k

    10F1.8k

    10F

    470F

    470F

    1.8k

    10F1.8k

    10F1.8k

    10F1.8k

    56k

    56k

    56k

    100

    470pF

    4.7

    4.7

    3F

    0.1F4.7

    4.7

    4.7

    3F 0.1F

    4.7

    3F

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    4.7

    4.7

    3F 0.1F

    4.7

    4.7

    3F 0.1F

    4.7

    3pF

    3pF

    56k

    3pF

    56k

    3pF

    56k 3pF

    3pF

    56k

    470pF

    220pF220pF

    220pF

    3k

    3k3k

    220pF220pF

    220pF+ + +

    ++

    +

    +

    ++

    ++

    +

    + + +

    Sta

    nd-b

    yC

    ontr

    ol

    (*1)

    Ch6

    OU

    TC

    h5O

    UT

    Ch4

    OU

    T--V

    CC

    +V

    CC

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    OU

    TC

    h3O

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    T

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    es th

    at th

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    um o

    pera

    ting

    curr

    ent f

    low

    ing

    into

    the

    stan

    dby

    pin

    (pin

    23)

    doe

    s no

    t exc

    eed

    the

    max

    imum

    rat

    ing.

  • No. 7374-5/8

    STK403-430

    Thermal Design Example

    The heat sink thermal resistance, c-a, required to handle the total power dissipated within this hybrid IC is determined asfollows.

    Condition 1: The IC substrate temperature Tc must not exceed 125C.

    Pd c a + Ta < 125C ... (1)Ta: Guaranteed ambient temperature for the end product.

    Condition 2: The junction temperature of each individual transistor must not exceed 150C.

    Pd c a + Pd/N j c + Ta < 150C ... (2)N: Number of power transistors

    j-c: Thermal resistance per power transistorWe take the power dissipation in the power transistors to be Pd evenly distributed across those N power transistors.

    If we solve for c-a in equations (1) and (2), we get the following inequalities.c a < (125 Ta)/Pd ... (1)c a < (150 Ta)/Pd j-c/N ... (2)

    Values that satisfy both these inequalities at the same time are the required heat sink thermal resistance values.

    Determining the following specifications allows us to determine the required heat sink thermal resistance frominequalities (1) and (2).

    Supply voltage: VCC

    Load resistance: RL

    Guaranteed ambient temperature: Ta

    Example:

    Assume that the IC supply voltage, VCC, is 23 V, RL is 6 , and that the signal is a continuous sine wave. In this case,from the Pd PO characteristics, the maximum power will be 103 W for a signal with a frequency of 1 kHz.

    For actual music signals, it is usual to use a Pd of 1/8 of POmax, which is the power estimated for continuous signals inthis manner. (Note that depending on the particular safety standard used, a value somewhat different from the value of1/8 used here may be used.)

    That is:

    Pd = 65 W (when 1/8 POmax is 2.5 W)

    The number, N, of power transistors in the hybrid IC's audio amplifier block is 12. Since the thermal resistance, c-a, pertransistor is 3.6C/W, the required heat sink thermal resistance, c-a, for a guaranteed ambient temperature of 50C willbe as follows.

    From inequality (1): c a < (125 50)/65< 1.15

    From inequality (2): c a < (150 50)/65 3.6/12< 1.23

    Therefore, the thermal resistance that satisfies both these expressions at the same time is 1.15C/W.

    Note that this thermal design example assumes the use of a constant-voltage power supply, and is only provided as anexample for reference purposes. Thermal designs must be tested in an actual end product.

  • No. 7374-6/8

    STK403-430

    Stand-by & Mute Sample Application Circuit

    2827

    2625

    2423

    2221

    2019

    1817

    1615

    1413

    1211

    109

    87

    65

    43

    21

    ST

    K40

    3-40

    0 se

    ries

    Ch1

    OUT

    +PRE

    --PRE

    Ch1 IN

    Ch1

    NFCh

    2NF

    Ch2 IN

    Ch3 IN

    Ch3

    NFCh

    3O

    UTCh

    2O

    UT+V

    CC--V

    CC--V

    CC+V

    CCCh

    4O

    UTCh

    5O

    UTSU

    BG

    NDG

    ND

    SUB

    +PRE

    Ch4 IN

    Ch4

    NFBI

    AS(S

    T-BY

    )Ch

    5NF

    Ch5 IN

    Ch6 IN

    Ch6

    NFCh

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    UT

    Ch6

    INC

    h1IN C

    h2IN C

    h3IN

    Ch5

    IN Ch4

    IN

    10k

    10k

    10k

    2.2k

    10k

    + + +

    ++

    +

    +

    +

    ++

    ++

    +

    + + +

    Ch6

    OU

    TC

    h5O

    UT

    Ch4

    OU

    T--V

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    +V

    CC

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    OU

    TC

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    Ch1

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    T

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    ent

    flow

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    stan

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    max

    imum

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    ing.

    10k

    10k

    10k

    2.2k

    10k

    3k

    33k

    2k

    33F

    6.2k

    Mut

    e C

    ontr

    olH

    : S

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    e M

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    L : N

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    Con

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    eL

    : Nor

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    Sta

    nd-b

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    ontr

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    +5

    +5

    ST-

    BY

    ST-

    BY

    PLA

    Y

    MU

    TE

    MU

    TE

  • No. 7374-7/8

    STK403-430

    Standby Mode Control

    2827

    2625

    2423

    2221

    2019

    1817

    1615

    1413

    1211

    109

    87

    65

    43

    21

    ST

    K40

    3-40

    0 se

    ries

    Ch1

    OUT

    +PRE

    --PRE

    Ch1 IN

    Ch1

    NFCh

    2NF

    Ch2 IN

    Ch3 IN

    Ch3

    NFCh

    3O

    UTCh

    2O

    UT+V

    CC--V

    CC--V

    CC+V

    CCCh

    4O

    UTCh

    5O

    UTSU

    BG

    NDG

    ND

    SUB

    +PRE

    Ch4 IN

    Ch4

    NFBI

    AS(S

    T-BY

    )Ch

    5NF

    Ch5 IN

    Ch6 IN

    Ch6

    NFCh

    6O

    UT

    +

    ITF

    0225

    0

    3k

    33k

    2k

    33F/ 10V

    6.2k

    (*

    1)

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    nd-b

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    Mod

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    : Sta

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    (0 V

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    rent

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    V :

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    s / 1

    div

    OF

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    Mod

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    (Ope

    ratio

    nM

    ode)

    0.1V

    0.16

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    rnal

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    hen

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    is a

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    and

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    IC tr

    ansi

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    Cur

    rent

    flow

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    pin

    23

    IST

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    Impulse noise that occurs at power on and power off can be reduced significantly by using a standby circuit. End product design is made easier by using a limiting resistor *1 to match the control voltage provided by the microcontroller or other control circuit. Standby control can be applied by controlling the current (IST) flowing into the standby pin (pin 23).

  • PS No. 7374-8/8

    STK403-430

    This catalog provides information as of December, 2003. Specifications and information herein aresubject to change without notice.

    Specifications of any and all SANYO products described or contained herein stipulate the performance,characteristics, and functions of the described products in the independent state, and are not guaranteesof the performance, characteristics, and functions of the described products as mounted in the customersproducts or equipment. To verify symptoms and states that cannot be evaluated in an independent device,the customer should always evaluate and test devices mounted in the customers products or equipment.

    SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and allsemiconductor products fail with some probability. It is possible that these probabilistic failures couldgive rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,or that could cause damage to other property. When designing equipment, adopt safety measures sothat these kinds of accidents or events cannot occur. Such measures include but are not limited to protectivecircuits and error prevention circuits for safe design, redundant design, and structural design.

    In the event that any or all SANYO products (including technical data, services) described or containedherein are controlled under any of applicable local export control laws and regulations, such products mustnot be exported without obtaining the export license from the authorities concerned in accordance with theabove law.

    No part of this publication may be reproduced or transmitted in any form or by any means, electronic ormechanical, including photocopying and recording, or any information storage or retrieval system,or otherwise, without the prior written permission of SANYO Electric Co., Ltd.

    Any and all information described or contained herein are subject to change without notice due toproduct/technology improvement, etc. When designing equipment, refer to the Delivery Specificationfor the SANYO product that you intend to use.

    Information (including circuit diagrams and circuit parameters) herein is for example only; it is notguaranteed for volume production. SANYO believes information herein is accurate and reliable, butno guarantees are made or implied regarding its use or any infringements of intellectual property rightsor other rights of third parties.

    THD PO

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    80

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    PO VCC

    ITF02253

    80

    40

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    60

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    20

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    10 14 18 22 26 30 34 38 42

    VCC=23VRL=6VG=30dBRg=600Tc=25C6ch Drive

    RL=6f=1kHzVG=30dBRg=600Tc=25C6ch Drive

    THD=

    10%

    THD=

    0.6%

    f=20kH

    z, THD

    =0.6%

    PO f

    ITF022541k10 100

    40

    35

    15

    20

    25

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    2 3 5 7 2 3 5 7 2 3 5 7 2 310k

    THD=10%

    THD=0.6%

    VCC=23V, RL=6VG=30dB, Rg=600Tc=25C6ch drive

    VCC=23VRL=6f=1kHzVG=30dBRg=600Tc=25C6ch Drive(same output rating)

    f=20kHz

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    Output power, PO W

    Supply voltage, VCC V

    Output power, PO W

    Frequency, f Hz

  • Ordering number : ENN*7375

    21604TN (OT) No. 7375-1/8

    OverviewThe STK403-400 series products are audio poweramplifier hybrid ICs that consist of optimally-designeddiscrete component power amplifier circuits that havebeen miniaturized using SANYOs unique insulated metalsubstrate technology (IMST). The adoption of a newly-developed low thermal resistance substrate allows thisproduct to integrate six power amplifier channels in asingle compact package. The adoption of a standby circuitin this device allows it to reduce impulse noisesignificantly as compared to earlier Sanyo products, inparticular, the STK402-*00 series products.

    Features

    Series of pin compatible power amplifiers ranging from30 W/ch to 45 W/ch (10%/1 kHz) devices. The sameprinted circuit board can be used depending on theoutput power grade.

    Miniature packages 78.0 mm 32.0 mm 9.0 mm *

    *: Not including the pins. Output load impedance: RL = 6 Allowable load shorted time: 0.3 seconds Supports the use of standby and muting circuits.

    Package Dimensionsunit: mm

    4202-SIP28

    Preliminary

    SANYO: SIP28

    [STK403-440]

    STK403-440

    SANYO Electric Co.,Ltd. Semiconductor CompanyTOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

    Six-Channel Class AB Audio Power Amplifier IC 25 W 6 Channels

    Thick-Film Hybrid IC

    Any and all SANYO products described or contained herein do not have specifications that can handleapplications that require extremely high levels of reliability, such as life-support systems, aircraftscontrol systems, or other applications whose failure can be reasonably expected to result in seriousphysical and/or material damage. Consult with your SANYO representative nearest you before usingany SANYO products described or contained herein in such applications.

    SANYO assumes no responsibility for equipment failures that result from using products at values thatexceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or otherparameters) listed in products specifications of any and all SANYO products described or containedherein.

  • No. 7375-2/8

    STK403-440

    ItemType No.

    STK403-430 STK403-440 STK403-450

    Output 1 (10%/1 kHz) 30 W 6 ch 40 W 6 ch 45 W 6 ch

    Output 2 (0.6%/20 Hz to 20 kHz) 20 W 6 ch 25 W 6 ch 30 W 6 ch

    Maximum supply voltage (No signal) 36 V 38 V 40 V

    Maximum supply voltage (6 ) 34 V 36 V 38 V

    Recommended supply voltage (6 ) 23 V 26 V 28 V

    Package 78.0 mm 32.0 mm 9.0 mm

    Series Organization

    SpecificationsMaximum Ratings at Ta = 25C

    These products are organized as a series based on their output capacity.

    Operating Characteristics at Tc = 25C, RL = 6 (noninductive load), Rg = 600 , VG = 30 dB

    Notes: 1. 1ch drive2. Unless otherwise noted, use a constant-voltage supply for the power supply used during inspection.3. The output noise voltage values shown are peak values read with a VTVM. However, an AC stabilized (50 Hz) power supply should be used to

    minimize the influence of AC primary side flicker noise on the reading.4. Use the transformer power supply circuit shown in the figure below for allowable load shorted time measurement and output noise voltage

    measurement.5. Design applications so that the minus pre-VCC line (pin 17) is at the lowest potential at all times.6. A limiting resistor that assures that the maximum operating current flowing into the standby pin (pin 23) does not exceed the maximum rating must

    be included in application circuits. This IC operates when a voltage higher than VBE (about 0.6 V) is applied to the standby pin.

    4700 F

    4700 F

    DBA30C

    500

    500

    +VCC

    --VCC

    +

    +

    Designated Transformer Power Supply (RP-25 equivalent)

    Parameter Symbol Conditions Ratings Unit

    Maximum supply voltage (No signal) VCC max(0) 38 V

    Maximum supply voltage VCC max(1) RL 6 36 V

    Minimum operating supply voltage VCC min 10 V

    Maximum operation flow-in current (pin 23) IST OFF max 1.2 mA

    Thermal resistance j -c Per power transistor 3.6 C/W

    Junction temperature Tj maxBoth the Tj max and the Tc max conditions must be met.

    150 C

    Operating IC substrate temperature Tc max 125 C

    Storage temperature Tstg 30 to +125 C

    Allowable load shorted time *4 ts VCC = 26.0 V, RL = 6 , f = 50 Hz, PO = 25 W, 1ch drive 0.3 s

    Parameter SymbolConditions*1 Ratings

    UnitVCC (V) f (Hz) PO (W) THD (%) min typ max

    PO (1) 26.0 20 to 20 k 0.6 23 25Output power *1

    PO (2) 26.0 1 k 10 40W

    THD (1) 26.0 20 to 20 k 5.0 VG = 30 dB 0.6Total harmonic distortion *1

    THD (2) 26.0 1 k 5.0 VG = 30 dB 0.03%

    Frequency characteristics fL, fH 26.0 1.0 +0 3 dB 20 to 50 k Hz

    Input impedance ri 26.0 1 k 1.0 55 k

    Output noise voltage *2 VNO 31.0 Rg = 2.2 k 1.0 mVrms

    Quiescent current ICCO 31.0 No loading 60 110 180 mA

    Neutral voltage VN 31.0 70 0 +70 mV

    Current flowing into pin 23 IST ON 26.0

    V23 = 5 V, current limiting 0 mAin standby mode *6 resistance: 6.2 k

    Current flowing into pin 23 IST OFF 26.0 0.4 1.2 mAin operating mode *6

  • No. 7375-3/8

    STK403-440

    Internal Equivalent Circuit

    11

    56

    78

    9 23 19 18

    2 3 4 1 10 12 13 16 15

    Pre

    driv

    er IC

    (CH

    2 / C

    H3)

    Pre

    driv

    er IC

    (CH

    1)

    Bia

    s ci

    rcui

    t

    2425

    2627

    28P

    re d

    river

    IC(C

    H5

    / CH

    6)222120 17 14

    Pre

    driv

    er IC

    (CH

    4)

    ITF0

    2247

    C13

    TR7

    TR8

    TR17SU

    B

    TR16

    C16

    C12

    TR4

    TR5

    C15

    TR13

    TR14

    C11

    TR1

    TR2

    C14

    TR10

    TR11

    TR9R

    24

    R25

    TR6

    R22

    R23

    TR3R

    20

    R21

    R5

    R6

    R3

    R4

    R1

    R2

    TR12R

    27

    R26

    TR15

    R29

    R28

    TR18R

    31

    R30

    R8

    R7

    R10

    R9

    R12

    R11

    C3

    C2

    C1

    C4

    C5

    C6

  • No. 7375-4/8

    STK403-440

    Sample Application Circuit

    2827

    2625

    2423

    2221

    2019

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    1615

    1413

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    87

    65

    43

    21

    ST

    K40

    3-40

    0 se

    ries

    Ch1

    OUT

    +PRE

    --PRE

    Ch1 IN

    Ch1

    NFCh

    2NF

    Ch2 IN

    Ch3 IN

    Ch3

    NFCh

    3O

    UTCh

    2O

    UT+V

    CC--V

    CC--V

    CC+V

    CCCh

    4O

    UTCh

    5O

    UTSU

    BG

    NDG

    ND

    SUB

    +PRE

    Ch4 IN

    Ch4

    NFBI

    AS(S

    T-BY

    )Ch

    5NF

    Ch5 IN

    Ch6 IN

    Ch6

    NFCh

    6O

    UT

    Ch6

    INC

    h1IN C

    h2IN C

    h3IN

    Ch5

    IN Ch4

    IN

    1 k

    2.2

    F 3 F

    0.1 F

    10 F

    100 F

    1 k

    2.2

    F

    1 k

    2.2

    F56 k

    470 pF

    1 k

    2.2

    F

    56 k

    470 pF

    1 k

    2.2

    F

    56 k

    470 pF

    1 k

    2.2

    F

    56 k

    470 pF

    56 k

    1.8 k3 k

    3 k

    3 k

    6.2 k

    10 F1.8 k

    10 F

    470 F

    470 F

    1.8 k

    10 F1.8 k

    10 F1.8 k

    10 F1.8 k

    56 k

    56 k

    56

    k

    100

    470 pF

    4.7

    4.7

    3 F

    0.1 F4.7

    4.7

    4.7

    3 F 0.1 F

    4.7

    3 F

    0.1 F4.7

    4.7

    4.7

    3 F 0.1 F

    4.7

    4.7

    3 F 0.1 F

    4.7

    3 pF

    3 pF

    56 k

    3 pF

    56 k

    3 pF

    56 k

    3 pF

    3 pF

    56 k

    470 pF

    220 pF220 pF

    220 pF

    3 k

    3 k3 k

    220 pF220 pF

    220 pF

    + + +

    ++

    +

    +

    ++

    ++

    +

    + + +

    Sta

    nd-b

    yco

    ntro

    l

    *

    Ch6

    OU

    TC

    h5O

    UT

    Ch4

    OU

    T--V

    CC

    +V

    CC

    Ch2

    OU

    TC

    h3O

    UT

    Ch1

    OU

    T

    ITF0

    2248

    *: U

    se a

    val

    ue fo

    r th

    e lim

    iting

    res

    isto

    r th

    at a

    ssur

    es th

    at th

    e m

    axim

    um o

    pera

    ting

    curr

    ent f

    low

    ing

    into

    the

    stan

    dby

    pin

    (pin

    23)

    doe

    s no

    t exc

    eed

    the

    max

    imum

    rat

    ing.

  • No. 7375-5/8

    STK403-440

    Thermal Design Example

    The heat sink thermal resistance, c-a, required to handle the total power dissipated within this hybrid IC is determined asfollows.

    Condition 1: The IC substrate temperature Tc must not exceed 125C.

    Pd c-a + Ta < 125C ... (1)Ta: Guaranteed ambient temperature for the end product.

    Condition 2: The junction temperature of each transistor must not exceed 150C.

    Pd c-a + Pd/N j-c + Ta < 150C ... (2)N: Number of power transistors

    j-c: Thermal resistance per power transistorWe take the power dissipation in the power transistors to be Pd evenly distributed across those N power transistors.

    If we solve for c-a in equations (1) and (2), we get the following inequalities.c-a < (125 Ta)/Pd ... (1)c-a < (150 Ta)/Pd j-c/N ... (2)

    Values that satisfy both these inequalities at the same time are the required heat sink thermal resistance values.

    Determining the following specifications allows us to obtain the required heat sink thermal resistance from inequalities(1) and (2).

    Supply voltage: VCC

    Load resistance: RL

    Guaranteed ambient temperature: Ta

    Example:

    Assume that the IC supply voltage, VCC, is 26 V, RL is 6 , and that the signal is a continuous sine wave. In this case,from the Pd PO characteristics, the maximum power will be 134 W for a signal with a frequency of 1 kHz.

    For actual music signals, it is usual to use a Pd of 1/8 of POmax, which is the power estimated for continuous signals inthis manner. (Note that depending on the particular safety standard used, a value somewhat different from the value of1/8 used here may be used.)

    That is:

    Pd = 85 W (when 1/8 POmax is 3.1 W)

    The number, N, of power transistors in the hybrid IC's audio amplifier block is 12. Since the thermal resistance, j-c, pertransistor is 3.6C/W, the required heat sink thermal resistance, c-a, for a guaranteed ambient temperature of 50C willbe as follows.

    From inequality (1): c-a < (125 50)/85< 0.88

    From inequality (2): c-a < (150 50)/85 3.6/12< 0.87

    Therefore, the thermal resistance that satisfies both these expressions at the same time is 0.87C/W.

    Note that this thermal design example assumes the use of a constant-voltage power supply, and is only provided as anexample for reference purposes. Thermal designs must be tested in an actual end product.

  • No. 7375-6/8

    STK403-440

    Stand-by & Mute Sample Application Circuit

    2827

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    109

    87

    65

    43

    21

    ST

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    3-40

    0 se

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    Ch1

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    +PRE

    --PRE

    Ch1 IN

    Ch1

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    ++

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    10 k

    10 k

    10 k

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  • No. 7375-7/8

    STK403-440

    Standby Mode Control

    2827

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    ST

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    3-40

    0 se

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    Ch1

    OUT

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    Ch1 IN

    Ch1

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    Ch2 IN

    Ch3 IN

    Ch3

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    3O

    UTCh

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    UT+V

    CC--V

    CC--V

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    CCCh

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    UTCh

    5O

    UTSU

    BG

    NDG

    ND

    SUB

    +PRE

    Ch4 IN

    Ch4

    NFBI

    AS(S

    T-BY

    )Ch

    5NF

    Ch5 IN

    Ch6 IN

    Ch6

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    +

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    0225

    0

    3 k

    33 k

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    33 F/ 10 V

    6.2

    k *

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    Impulse noise that occurs at power on and power off can be reduced significantly by using a standby circuit. End product design is made easier by using a limiting resistor (*) to match the control voltage provided by the microcontroller or other control circuit. Standby control is available by controlling the current (IST) flowing into the standby pin (pin 23).

  • PS No. 7375-8/8

    STK403-440

    This catalog provides information as of February, 2004. Specifications and information herein are subjectto change without notice.

    Specifications of any and all SANYO products described or contained herein stipulate the performance,characteristics, and functions of the described products in the independent state, and are not guaranteesof the performance, characteristics, and functions of the described products as mounted in the customersproducts or equipment. To verify symptoms and states that cannot be evaluated in an independent device,the customer should always evaluate and test devices mounted in the customers products or equipment.

    SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and allsemiconductor products fail with some probability. It is possible that these probabilistic failures couldgive rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,or that could cause damage to other property. When designing equipment, adopt safety measures sothat these kinds of accidents or events cannot occur. Such measures include but are not limited to protectivecircuits and error prevention circuits for safe design, redundant design, and structural design.

    In the event that any or all SANYO products (including technical data, services) described or containedherein are controlled under any of applicable local export control laws and regulations, such products mustnot be exported without obtaining the export license from the authorities concerned in accordance with theabove law.

    No part of this publication may be reproduced or transmitted in any form or by any means, electronic ormechanical, including photocopying and recording, or any information storage or retrieval system,or otherwise, without the prior written permission of SANYO Electric Co., Ltd.

    Any and all information described or contained herein are subject to change without notice due toproduct/technology improvement, etc. When designing equipment, refer to the Delivery Specificationfor the SANYO product that you intend to use.

    Information (including circuit diagrams and circuit parameters) herein is for example only; it is notguaranteed for volume production. SANYO believes information herein is accurate and reliable, butno guarantees are made or implied regarding its use or any infringements of intellectual property rightsor other rights of third parties.

    THD PO

    ITF022551.00.1

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    Pd PO

    ITF02256

    01.00.1

    160

    120

    140

    80

    100

    60

    20

    40

    2 3 5 7 2 3 5 2 3 57 710

    PO VCC

    Out

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    W

    Supply voltage, VCC V ITF02257

    40

    50

    60

    70

    0

    10

    20

    30

    10 14 18 22 26 30 34 38

    VCC = 26 VRL = 6 VG = 30 dBRg = 600 Tc = 25C6ch drive

    RL = 6 f = 1 kHzVG = 30 dBRg = 600 Tc = 25C6ch drive

    THD

    = 10

    %

    THD

    = 0.6%

    f = 20

    kHz, T

    HD = 0

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    Output power, PO W

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    Frequency, f Hz ITF022581k10 100

    50

    20

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    2 3 5 7 2 3 5 7 2 3 5 7 2 310k

    THD = 10%

    THD = 0.6%

    VCC = 26 V, RL = 6 VG = 30 dB, Rg = 600 Tc = 25C6ch drive

    VCC = 26 VRL = 6 f = 1 kHzVG = 30 dBRg = 600 Tc = 25C6ch drive(same output rating)f = 20 kHz

    f = 1 kHz

  • Ordering number : ENN*7376

    21604TN (OT) No. 7376-1/8

    OverviewThe STK403-400 series products are audio poweramplifier hybrid ICs that consist of optimally-designeddiscrete component power amplifier circuits that havebeen miniaturized using SANYOs unique insulated metalsubstrate technology (IMST). The adoption of a newly-developed low thermal resistance substrate allows thisproduct to integrate six power amplifier channels in asingle compact package. The adoption of a standby circuitin this device allows it to reduce impulse noisesignificantly as compared to earlier Sanyo products, inparticular, the STK402-*00 series products.

    Features

    Series of pin compatible power amplifiers ranging from30 W/ch to 45 W/ch (10%/1 kHz) devices. The sameprinted circuit board can be used depending on theoutput power grade.

    Miniature packages 78.0 mm 32.0 mm 9.0 mm *

    *: Not including the pins. Output load impedance: RL = 6 Allowable load shorted time: 0.3 seconds Supports the use of standby and muting circuits.

    Package Dimensionsunit: mm

    4202-SIP28

    Preliminary

    SANYO: SIP28

    [STK403-450]

    STK403-450

    SANYO Electric Co.,Ltd. Semiconductor CompanyTOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

    Six-Channel Class AB Audio Power Amplifier IC 30 W 6 Channels

    Thick-Film Hybrid IC

    Any and all SANYO products described or contained herein do not have specifications that can handleapplications that require extremely high levels of reliability, such as life-support systems, aircraftscontrol systems, or other applications whose failure can be reasonably expected to result in seriousphysical and/or material damage. Consult with your SANYO representative nearest you before usingany SANYO products described or contained herein in such applications.

    SANYO assumes no responsibility for equipment failures that result from using products at values thatexceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or otherparameters) listed in products specifications of any and all SANYO products described or containedherein.

  • No. 7376-2/8

    STK403-450

    ItemType No.

    STK403-430 STK403-440 STK403-450

    Output 1 (10%/1 kHz) 30 W 6 ch 40 W 6 ch 45 W 6 ch

    Output 2 (0.6%/20 Hz to 20 kHz) 20 W 6 ch 25 W 6 ch 30 W 6 ch

    Maximum supply voltage (No signal) 36 V 38 V 40 V

    Maximum supply voltage (6 ) 34 V 36 V 38 V

    Recommended supply voltage (6 ) 23 V 26 V 28 V

    Package 78.0 mm 32.0 mm 9.0 mm

    Series Organization

    SpecificationsMaximum Ratings at Ta = 25C

    These products are organized as a series based on their output capacity.

    Operating Characteristics at Tc = 25C, RL = 6 (noninductive load), Rg = 600 , VG = 30 dB

    Notes: 1. 1ch drive2. Unless otherwise noted, use a constant-voltage supply for the power supply used during inspection.3. The output noise voltage values shown are peak values read with a VTVM. However, an AC stabilized (50 Hz) power supply should be used to

    minimize the influence of AC primary side flicker noise on the reading.4. Use the transformer power supply circuit shown in the figure below for allowable load shorted time measurement and output noise voltage

    measurement.5. Design applications so that the minus pre-VCC line (pin 17) is at the lowest potential at all times.6. A limiting resistor that assures that the maximum operating current flowing into the standby pin (pin 23) does not exceed the maximum rating must

    be included in application circuits. This IC operates when a voltage higher than VBE (about 0.6 V) is applied to the standby pin.

    4700 F

    4700 F

    DBA30C

    500

    500

    +VCC

    --VCC

    +

    +

    Designated Transformer Power Supply (RP-25 equivalent)

    Parameter Symbol Conditions Ratings Unit

    Maximum supply voltage (No signal) VCC max(0) 40 V

    Maximum supply voltage VCC max(1) RL = 6 38 V

    Minimum operating supply voltage VCC min 10 V

    Maximum operation flow-in current (pin 23) IST OFF max 1.2 mA

    Thermal resistance j -c Per power transistor 3.6 C/W

    Junction temperature Tj maxBoth the Tj max and the Tc max conditions must be met.

    150 C

    Operating IC substrate temperature Tc max 125 C

    Storage temperature Tstg 30 to +125 C

    Allowable load shorted time *4 ts VCC = 28.0 V, RL = 6 , f = 50 Hz, PO = 30 W, 1ch drive 0.3 s

    Parameter SymbolConditions*1 Ratings

    UnitVCC (V) f (Hz) PO (W) THD (%) min typ max

    PO (1) 28.0 20 to 20 k 0.6 27 30Output power *1

    PO (2) 28.0 1 k 10 45W

    THD (1) 28.0 20 to 20 k 5.0 VG = 30 dB 0.6Total harmonic distortion *1

    THD (2) 28.0 1 k 5.0 VG = 30 dB 0.03%

    Frequency characteristics fL, fH 28.0 1.0 +0 3 dB 20 to 50 k Hz

    Input impedance ri 28.0 1 k 1.0 55 k

    Output noise voltage *2 VNO 34.0 Rg = 2.2 k 1.0 mVrms

    Quiescent current ICCO 34.0 No loading 60 110 180 mA

    Neutral voltage VN 34.0 70 0 +70 mV

    Current flowing into pin 23 IST ON 28.0

    V23 = 5 V, current limiting 0 mAin standby mode *6 resistance: 6.2 k

    Current flowing into pin 23 IST OFF 28.0 0.4 1.2 mAin operating mode *6

  • No. 7376-3/8

    STK403-450

    Internal Equivalent Circuit

    11

    56

    78

    9 23 19 18

    2 3 4 1 10 12 13 16 15

    Pre

    driv

    er IC

    (CH

    2 / C

    H3)

    Pre

    driv

    er IC

    (CH

    1)

    Bia

    s ci

    rcui

    t

    2425

    2627

    28P

    re d

    river

    IC(C

    H5

    / CH

    6)222120 17 14

    Pre

    driv

    er IC

    (CH

    4)

    ITF0

    2247

    C13

    TR7

    TR8

    TR17SU

    B

    TR16

    C16

    C12

    TR4

    TR5

    C15

    TR13

    TR14

    C11

    TR1

    TR2

    C14

    TR10

    TR11

    TR9R

    24

    R25

    TR6

    R22

    R23

    TR3R

    20

    R21

    R5

    R6

    R3

    R4

    R1

    R2

    TR12R

    27

    R26

    TR15

    R29

    R28

    TR18R

    31

    R30

    R8

    R7

    R10

    R9

    R12

    R11

    C3

    C2

    C1

    C4

    C5

    C6

  • No. 7376-4/8

    STK403-450

    Sample Application Circuit

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    K40

    3-40

    0 se

    ries

    Ch1

    OUT

    +PRE

    --PRE

    Ch1 IN

    Ch1

    NFCh

    2NF

    Ch2 IN

    Ch3 IN

    Ch3

    NFCh

    3O

    UTCh

    2O

    UT+V

    CC--V

    CC--V

    CC+V

    CCCh

    4O

    UTCh

    5O

    UTSU

    BG

    NDG

    ND

    SUB

    +PRE

    Ch4 IN

    Ch4

    NFBI

    AS(S

    T-BY

    )Ch

    5NF

    Ch5 IN

    Ch6 IN

    Ch6

    NFCh

    6O

    UT

    Ch6

    INC

    h1IN C

    h2IN C

    h3IN

    Ch5

    IN Ch4

    IN

    1 k

    2.2

    F 3 F

    0.1 F

    10 F

    100 F

    1 k

    2.2

    F

    1 k

    2.2

    F56 k

    470 pF

    1 k

    2.2

    F

    56 k

    470 pF

    1 k

    2.2

    F

    56 k

    470 pF

    1 k

    2.2

    F

    56 k

    470 pF

    56 k

    1.8 k3 k

    3 k

    3 k

    6.2 k

    10 F1.8 k

    10 F

    470 F

    470 F

    1.8 k

    10 F1.8 k

    10 F1.8 k

    10 F1.8 k

    56 k

    56 k

    56

    k

    100

    470 pF

    4.7

    4.7

    3 F

    0.1 F4.7

    4.7

    4.7

    3 F 0.1 F

    4.7

    3 F

    0.1 F4.7

    4.7

    4.7

    3 F 0.1 F

    4.7

    4.7

    3 F 0.1 F

    4.7

    3 pF

    3 pF

    56 k

    3 pF

    56 k

    3 pF

    56 k

    3 pF

    3 pF

    56 k

    470 pF

    220 pF220 pF

    220 pF

    3 k

    3 k3 k

    220 pF220 pF

    220 pF

    + + +

    ++

    +

    +

    ++

    ++

    +

    + + +

    Sta

    nd-b

    yco

    ntro

    l

    *

    Ch6

    OU

    TC

    h5O

    UT

    Ch4

    OU

    T--V

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    CC

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    (pin

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    max

    imum

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    ing.

  • No. 7376-5/8

    STK403-450

    Thermal Design Example

    The heat sink thermal resistance, c-a, required to handle the total power dissipated within this hybrid IC is determined asfollows.

    Condition 1: The IC substrate temperature Tc must not exceed 125C.

    Pd c-a + Ta < 125C ... (1)Ta: Guaranteed ambient temperature for the end product.

    Condition 2: The junction temperature of each transistor must not exceed 150C.

    Pd c-a + Pd/N j-c + Ta < 150C ... (2)N: Number of power transistors

    j-c: Thermal resistance per power transistorWe take the power dissipation in the power transistors to be Pd evenly distributed across those N power transistors.

    If we solve for c-a in equations (1) and (2), we get the following inequalities.c-a < (125 Ta)/Pd ... (1)c-a < (150 Ta)/Pd j-c/N ... (2)

    Values that satisfy both these inequalities at the same time are the required heat sink thermal resistance values.

    Determining the following specifications allows us to obtain the required heat sink thermal resistance from inequalities(1) and (2).

    Supply voltage: VCC

    Load resistance: RL

    Guaranteed ambient temperature: Ta

    Example:

    Assume that the IC supply voltage, VCC, is 28 V, RL is 6 , and that the signal is a continuous sine wave. In this case,from the Pd PO characteristics, the maximum power will be 164 W for a signal with a frequency of 1 kHz.

    For actual music signals, it is usual to use a Pd of 1/8 of POmax, which is the power estimated for continuous signals inthis manner. (Note that depending on the particular safety standard used, a value somewhat different from the value of1/8 used here may be used.)

    That is:

    Pd = 105 W (when 1/8 POmax is 3.8 W)

    The number, N, of power transistors in the hybrid IC's audio amplifier block is 12. Since the thermal resistance, j-c, pertransistor is 3.6C/W, the required heat sink thermal resistance, c-a, for a guaranteed ambient temperature of 50C willbe as follows.

    From inequality (1): c-a < (125 50)/105< 0.71

    From inequality (2): c-a < (150 50)/105 3.6/12< 0.65

    Therefore, the thermal resistance that satisfies both these expressions at the same time is 0.65C/W.

    Note that this thermal design example assumes the use of a constant-voltage power supply, and is only provided as anexample for reference purposes. Thermal designs must be tested in an actual end product.

  • No. 7376-6/8

    STK403-450

    Stand-by & Mute Sample Application Circuit

    2827

    2625

    2423

    2221

    2019

    1817

    1615

    1413

    1211

    109

    87

    65

    43

    21

    ST

    K40

    3-40

    0 se

    ries

    Ch1

    OUT

    +PRE

    --PRE

    Ch1 IN

    Ch1

    NFCh

    2NF

    Ch2 IN

    Ch3 IN

    Ch3

    NFCh

    3O

    UTCh

    2O

    UT+V

    CC--V

    CC--V

    CC+V

    CCCh

    4O

    UTCh

    5O

    UTSU

    BG

    NDG

    ND

    SUB

    +PRE

    Ch4 IN

    Ch4

    NFBI

    AS(S

    T-BY

    )Ch

    5NF

    Ch5 IN

    Ch6 IN

    Ch6

    NFCh

    6O

    UT

    Ch6

    INC

    h1IN C

    h2IN C

    h3IN

    Ch5

    IN Ch4

    IN

    10 k

    10 k

    10 k

    2.2

    k

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    + + +

    ++

    +

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    ++

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    Ch6

    OU

    TC

    h5O

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    Ch4

    OU

    T--V

    CC

    +V

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    Ch2

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    TC

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    ITF0

    2249

    *: U

    se a

    val

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    r th

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    pin

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    23)

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    eed

    the

    max

    imum

    rat

    ing.

    10 k

    10 k

    10 k

    2.2

    k10

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    k

    33 k

    2 k

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    6.2 k

    Mut

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    ntro

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    : S

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    orm

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    ST-

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    BY

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    y

    Mut

    e

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    e

  • No. 7376-7/8

    STK403-450

    Standby Mode Control

    2827

    2625

    2423

    2221

    2019

    1817

    1615

    1413

    1211

    109

    87

    65

    43

    21

    ST

    K40

    3-40

    0 se

    ries

    Ch1

    OUT

    +PRE

    --PRE

    Ch1 IN

    Ch1

    NFCh

    2NF

    Ch2 IN

    Ch3 IN

    Ch3

    NFCh

    3O

    UTCh

    2O

    UT+V

    CC--V

    CC--V

    CC+V

    CCCh

    4O

    UTCh

    5O

    UTSU

    BG

    NDG

    ND

    SUB

    +PRE

    Ch4 IN

    Ch4

    NFBI

    AS(S

    T-BY

    )Ch

    5NF

    Ch5 IN

    Ch6 IN

    Ch6

    NFCh

    6O

    UT

    +

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    0225

    0

    3 k

    33 k

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    6.2

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    / 6.2

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    mA

    )

    Cur

    rent

    flow

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    200

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    (IS

    T).

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    is a

    pplie

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    d th

    e IC

    ent

    ers

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    ope

    ratin

    g m

    ode.

    Use

    a v

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    for

    the

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    esis

    tor

    that

    ass

    ures

    that

    the

    max

    imum

    op

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    ing

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    low

    ing

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    this

    pin

    due

    to th

    e co

    ntro

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    by th

    e m

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    ing.

    Impulse noise that occurs at power on and power off can be reduced significantly by using a standby circuit. End product design is made easier by using a limiting resistor (*) to match the control voltage provided by the microcontroller or other control circuit. Standby control is available by controlling the current (IST) flowing into the standby pin (pin 23).

  • PS No. 7376-8/8

    STK403-450

    This catalog provides information as of February, 2004. Specifications and information herein are subjectto change without notice.

    Specifications of any and all SANYO products described or contained herein stipulate the performance,characteristics, and functions of the described products in the independent state, and are not guaranteesof the performance, characteristics, and functions of the described products as mounted in the customersproducts or equipment. To verify symptoms and states that cannot be evaluated in an independent device,the customer should always evaluate and test devices mounted in the customers products or equipment.

    SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and allsemiconductor products fail with some probability. It is possible that these probabilistic failures couldgive rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,or that could cause damage to other property. When designing equipment, adopt safety measures sothat these kinds of accidents or events cannot occur. Such measures include but are not limited to protectivecircuits and error prevention circuits for safe design, redundant design, and structural design.

    In the event that any or all SANYO products (including technical data, services) described or containedherein are controlled under any of applicable local export control laws and regulations, such products mustnot be exported without obtaining the export license from the authorities concerned in accordance with theabove law.

    No part of this publication may be reproduced or transmitted in any form or by any means, electronic ormechanical, including photocopying and recording, or any information storage or retrieval system,or otherwise, without the prior written permission of SANYO Electric Co., Ltd.

    Any and all information described or contained herein are subject to change without notice due toproduct/technology improvement, etc. When designing equipment, refer to the Delivery Specificationfor the SANYO product that you intend to use.

    Information (including circuit diagrams and circuit parameters) herein is for example only; it is notguaranteed for volume production. SANYO believes information herein is accurate and reliable, butno guarantees are made or implied regarding its use or any infringements of intellectual property rightsor other rights of third parties.

    THD PO

    ITF022591.00.1

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    Pd PO

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    01.00.1

    200

    160

    180

    120

    140

    80

    100

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    40

    2 3 5 7 2 3 5 2 3 57 710

    PO VCC

    Out

    put p

    ower

    , PO

    W

    Supply voltage, VCC V ITF02261

    40

    50

    60

    80

    70

    0

    10

    20

    30

    10 15 20 25 30 35 40

    VCC = 28 VRL = 6 VG = 30 dBRg = 600 Tc = 25C6ch drive

    RL = 6 f = 1 kHzVG = 30 dBRg = 600 Tc = 25C6ch drive

    THD

    = 10

    %

    THD

    = 0.6%

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    Out

    put p

    ower

    , PO

    W

    Frequency, f Hz ITF022621k10 100

    60

    50

    20

    30

    40

    2 3 5 7 2 3 5 7 2 3 5 7 2 310k

    THD = 10%

    THD = 0.6%

    VC C =28 V, RL = 6 VG = 30 dB, Rg = 600 Tc = 25C6ch drive

    VCC = 28 VRL = 6 f = 1 kHzVG = 30 dBRg = 600 Tc = 25C6ch drive(same output rating)

    f = 20 kHz

    f = 1 kHz

  • SANYO Electric Co.,Ltd. Semiconductor CompanyTOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

    Ordering number : ENN7727

    52004TN (OT) No.7727-1/5

    OverviewThe STK404-000S series products are audio power amplifier hybrid ICs that consist of optimally-designed discretecomponent power amplifier circuits that have been miniaturized using SANYOs unique insulated metal substratetechnology (IMST). The adoption of a newly-developed low thermal resistance substrate allows this series of devicesto be provided in miniature packages significantly more compact than earlier Sanyo products with similarspecifications.

    Features Series of pin compatible power amplifiers ranging from 45W to 180W (10%/1kHz) devices. The same printed

    circuit board can be used depending on the output power grade. Miniature packages

    30W to 40W (THD=0.4%, f=20Hz to 20kHz); 44.0mm 25.6mm 8.5mm * 50W to 80W (THD=0.4%, f=20Hz to 20kHz); 46.6mm 25.5mm 8.5mm * 100W to 120W (THD=0.4%, f=20Hz to 20kHz); 59.2mm 25.5mm 8.5mm *

    *: Not including the pins. Output load impedance: RL=6 Allowable load shorted time: 0.3 seconds Supports the use of standby, muting, and load shorting protection circuits.

    SANYO SemiconductorsDATA SHEET

    STK404-050SThick-Film Hybrid IC

    One-Channel Class AB AudioPower Amplifier IC 30W

    Any and all SANYO products described or contained herein do not have specifications that can handleapplications that require extremely high levels of reliability, such as life-support systems, aircraft'scontrol systems, or other applications whose failure can be reasonably expected to result in seriousphysical and/or material damage. Consult with your SANYO representative nearest you before usingany SANYO products described or contained herein in such applications.

    SANYO assumes no responsibility for equipment failures that result from using products at values thatexceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or otherparameters) listed in products specifications of any and all SANYO products described or containedherein.

    ItemType No.

    STK404-050S STK404-070S STK404-090S STK404-100S STK404-120S STK404-130S STK404-140S

    Output 1 (0.4%/20Hz to 20kHz) 30W 40W 50W 60W 80W 100W 120W

    Output 2 (10%/1kHz) 45W 60W 80W 90W 120W 150W 180W

    Maximum supply voltage (6) 37V 43V 46V 51V 59V 64V 73VRecommended supply voltage (6) 26V 30V 32V 35V 41V 45V 51VRemarks Built-in thermal protection circuit

    Package 44.0mm 25.6mm 8.5mm 46.6mm 25.5mm 8.5mm 59.2mm 25.5mm 8.5mm

    Series Organization

    These products are organized as a series based on their output capacity.

  • No.7727-2/5

    STK404-050S

    1 10

    44.0

    36.5

    (6.82)

    92.54=22.86

    3.6

    0.52.54

    8.5

    0.4

    2.9

    5.5

    13.0 2

    5.6

    17.8

    4.0

    Package Dimensionsunit : mm4203

    SANYO : SIP10

    SpecificationsMaximum Ratings at Ta = 25C

    Parameter Symbol Conditions Ratings Unit

    Maximum supply voltage (No signal) VCC max(0) 40 V

    Maximum supply voltage VCC max(1) RL=6 37 VThermal resistance j-c Per power transistor 3.0 C/WJunction temperature Tj max

    Both the Tj max and the Tc max conditions must be met.150 C

    Operating IC substrate temperature Tc max 125 C

    Storage temperature Tstg 30 to +125 C

    Allowable load shorted time *3 ts VCC=26.0V, RL=6, f=50Hz, PO=30W 0.3 s

    Notes: 1. Unless otherwise noted, use a constant-voltage supply for the power supply used during inspection.2. The output noise voltage values shown are peak values read with a VTVM. However, an AC stabilized (50 Hz) power supply should be used to

    minimize the influence of AC primary side flicker noise on the reading.3. Use the transformer power supply circuit shown in the figure below for allowable load shorted time measurement and output noise voltage

    measurement.This IC is designed assuming that applications will provide a load-shorting protection function that operates within 0.3 seconds of the load beingshorted and that either cuts off power to the IC or eliminates the load-shorted state in some other manner.

    Parameter SymbolConditions*1 Ratings

    UnitVCC (V) f (Hz) PO (W) THD (%) min typ max

    Output powerPO (1) 26.0 20 to 20 k 0.4 30

    WPO (2) 26.0 1 k 10 45

    Frequency characteristics fL, fH 26.0 1.0 +0 3dB 20 to 20k Hz

    Input impedance ri 26.0 1 k 1.0 55 kOutput noise voltage *2 VNO 32.0 Rg=10k 1.2 mVrmsQuiescent current ICCO 32.0 No loading 50 mA

    Neutral voltage VN 32.0 100 0 +100 mV

    Operating Characteristics at Tc=25C, RL=6 (noninductive load), Rg=600, VG=30dB

    10000F

    10000F

    DBA40C

    500

    500

    +VCC

    --VCC

    +

    +

    Designated Transformer Power Supply (MG-25 equivalent)

  • No.7727-3/5

    STK404-050S

    Internal Equivalent Circuit

    Bias

    Pre DRIVER

    SUB

    Power STAGE

    1

    2

    4 3 8

    10

    965

    7 ITF02363

    Sample Application Circuit

    ITF02214

    1

    1k

    1.8k

    56k

    100 / 1W

    56k

    4.7k

    4.7k

    4.7 / 1W

    4.7

    / 1W

    0.22

    2.2F

    2.2H

    3pF

    100

    F

    10F

    10F

    10F

    100

    F

    47F

    470p

    F

    0.1

    F

    2 3 4 5 6 7 8 9 10

    +IN

    +12V+VCC--VCC

    OUT

    +

    +

    ++

    +

    +

    RL

    STK404-050S

  • No.7727-4/5

    STK404-050S

    Thermal Design Example

    If we define Pd, the total power dissipation on the board when this hybrid IC is in operation, the heat sink thermalresistance, c-a, is determined as follows:

    Condition 1: The hybrid IC substrate temperature Tc must not exceed 125C.

    Pd c-a + Ta < 125C ... (1)Ta: Guaranteed ambient temperature for the end product.

    Condition 2: The junction temperature of each transistor must not exceed 150C.

    Pd c-a + Pd/N j-c + Ta < 150C ... (2)N: Number of power transistors

    j-c: Thermal resistance per power transistorWe take the power dissipation in the power transistors to be Pd evenly distributed across those N power transistors.

    If we solve for c-a in equations (1) and (2), we get the following inequalities:c-a < (125 Ta)/Pd ... (3)c-a < (150 Ta)/Pd j-c/N ... (4)

    Values that satisfy both these inequalities at the same time are the required heat sink thermal resistance values.

    Example:

    For actual music signals, it is usual to use a Pd of 1/8 of POmax, which is the power estimated for continuous signals inthis manner. (Note that depending on the particular safety standard used, a value somewhat different from the value of1/8 used here may be used.)

    When VCC = 26V and RL = 6, we get the following expression for the total power dissipation on the board, Pd:Pd = 15W (when 1/8 POmax is 3.8W) ... (5)

    The number, N, of power transistors in the hybrid ICs audio amplifier block is 2. Since the thermal resistance, j-c, pertransistor is 3.0C/W, the required heat sink thermal resistance, c-a, for a guaranteed ambient temperature of 50C willbe as follows:

    From inequality (3): c-a < (125 50)/15=5.00 ... (6)From inequality (4): c-a < (150 50)/15 3.0/2=5.17 ... (7)

    Therefore, the thermal resistance that satisfies both these expressions (6,7) at the same time is 5.0C/W.

    Note that this thermal design example assumes the use of a constant-voltage power supply, and is only provided as anexample for reference purposes. Thermal designs must be tested in an actual end product.

  • PS No.7727-5/5

    STK404-050S

    Specifications of any and all SANYO products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guaranteesof the performance, characteristics, and functions of the described products as mounted in the customer'sproducts or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment.

    SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and allsemiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,or that could cause damage to other property. When designing equipment, adopt safety measures sothat these kinds of accidents or events cannot occur. Such measures include but are not limited to protectivecircuits and error prevention circuits for safe design, redundant design, and structural design.

    In the event that any or al l SANYO products(including technical data,services) described or contained herein are controlled under any of applicable local export control laws and regulations,such products must not be expor ted without obtaining the expor t l icense f