DC/DC Converter Selection GuideRev. 4.0
www.rohm.com
DC/DC Switching Regulators
Table of Contents
Boost / Buck‐Boost / SEPIC and Inverting Converters
Buck Converters (Integrated FET Switch) 4
14
24
31
Power MOSFETs
Controllers (External FET Switch) 15
18
32
33
Isolated DC/DC Power Supplies 19
Linear Regulators
34
Linear Regulators
S
Low Dropout (LDO) Regulators 21
23
35
37
Notes 38
For DDR SDRAM 23 37
DC/DC Converters Selection Guide www.rohm.com11
ROHM’s WebsiteROHM’s Website
Please visit ROHM’s website to view theentire product lineup of power ICs.http://www.rohm.com
Access Datasheets, Application/TechnicalNotes, Reference Designs, EvaluationBoards, and other useful information.
DC/DC Converters MOSFETs
DC/DC Converters Selection Guide www.rohm.com22
Please refer to the latest datasheet before actual use.
ROHM Power Supply SolutionsROHM Power Supply Solutions
ROHM offers a broad portfolio covering the entire range ofpower supplies This selection guide includes DC/DCpower supplies. This selection guide includes DC/DCswitching regulators, linear regulators, isolated DC/DCconverters, and power MOSFETs.Pages 4-12 detail our newest series of buck converters.Users can select the ideal IC based on input voltage, outputcurrent and necessary functions
Primary Side Secondary Side
S it hi R l t Li R l tcurrent, and necessary functions.Page 13 introduces buck switching regulators that supportoperation up to 6MHz. Ultra-compact chip-scale packagesand compatibility with low-inductance coils contribute tosmaller power supply designs, making them suitable for
bil d i
AC/DC
PFC
AC Switching RegulatorDC/DC
Linear RegulatorLDO
Power Management SwitchHigh‐side Switch
Wireless Power Supply
Transformer
mobile devices.Page 14 lists buck-boost DC/DC switching regulators thatprovide stable power supply in portable devices usingsingle-cell lithium-ion batteries.Pages 15-17 discusses our controller ICs that support large
DC IsolatedDC/DC
Voltage Detector Power
MOSFET
Power Supply Block Diagramoutput currents via external MOSFET.Page 15 includes models that deliver both fast load responseand large current output in FPGA power supplies, while60V controllers are mentioned on page 17. Page 16 explainsH3RegTM, our original fast transient response technology.
I d i l G d IC
This allows users to select the optimum IC based onapplication requirements. However, please verify allspecifications, including functions and values, bereferring to the latest datasheet before actual usage.
Page 18 introduces MOSFETs ideal for use as externalswitching elements for controller ICs.Page 19 lists isolated DC/DC switching regulators thateliminate the need for an optocoupler in the feedback circuit,improving reliability.
Long-term supply of products is ensured for the industrialmarket. ROHM guarantees stable product supply for over10 years to meet the requirements of industrial equipmentmanufacturers.
Industrial‐Grade ICs
p g yPage 21 spotlights our wide linear regulator (LDOs) lineup,available in 4 different input withstand voltages, 5 outputcurrents, and a variety of output voltages.Page 23 introduces termination regulators for DDRSDRAM Superior output voltage precision and load
manufacturers.Part numbers developed for industrial equipment end inLB. Typically, when purchasing the Minimum OrderQuantity (MOQ) of a standard reel containing 2,000-3,000 pieces, there will often be pieces left over, whichare then either disposed of or stored for a long period of
DC/DC Converters Selection Guide www.rohm.com33
SDRAM. Superior output voltage precision and loadregulation help to maintain the required level of voltageaccuracy stipulated by JEDEC.Product lists and specifications can be found after page 24.
are then either disposed of or stored for a long period oftime. To prevent this, ROHM is supporting smallerproduction lots by offering 250pc reels. Inventory/stockstatus can be checked in real-time on our website.
Standard Reel2,000 to 3,000 pcs
Small Reel for the Industrial Market
250 pcs
DC/DC Switching Regulators Buck Converters (Integrated FET Switch)DC/DC Switching Regulators Buck Converters (Integrated FET Switch)
Select the appropriate buck DC/DC converter fromBD9x Series
New High Efficiency DC/DC Buck Converters
the matrix of input voltage and output current. The‘9’ in the part number after ‘BD’ signifies ‘buck’ type,while the following letter represents the maximuminput voltage rating and the next number indicates theoutput current.
BD9x Series
‐ Current Mode Control ‐ On‐time Control ‐ Light Load Mode ‐ Nonsynchronous
6.0
BD9C601EFJ
BD9B600MUV
Maximum Rating
20V
B D 9 A 3 0 0
Part No. Description BD9A600MUV
5.0 BD9C501EFJ
BD9B500MUV
BD9C401EFJ 20V
20V
Topology9 : Buck8 : Boost, Buck‐Boost,
Inverting
Output Current
Serial No.00, 01, 02, ・・・
Maximum Rated Inputt (A)
4.0 BD9B400MUV
BD9A400MUV
BD9D321EFJ
BD9D320EFJ 20V
20V
1 : ≤ 1A 2 : ≤ 2A3 : ≤ 3A4 : ≤ 4A
・・
A ≤ 10A
Maximum Rated Input Voltage and Control ModeA : ≤ 7V Current ModeB : ≤ 7V On‐timeC : ≤ 20V Current ModeD : ≤ 20V On‐timeE : ≤ 40V Current Mode
SW=570kHz
SW=300kHz
SW=570kHz
BD9B300MUV / BD9B301MUV‐LB
BD9A300MUV / BD9A301MUV‐LB
BD9E301EFJ‐LB
BD9E302EFJ
BD9E303EFJ‐LB
Outpu
t Current
3.0 BD9C301FJ / BD9C301FJ‐LB
40V
20V
30V
40V
A:≤ 10A・
Z : Controller
E : ≤ 40V Current ModeF : ≤ 40V On‐timeG : ≤ 80V Current Mode
Note: There are some part numbers that do not conform with this rule
The chart at left showing the BD9x lineup is color
SW=1MHz
SW 570kH
2.0 BD9B200MUV
1.2 BD9E151NUX
2.5 BD9E301EFJ LB
BD9E300EFJ‐LB
40V
40V
30V
The chart at left, showing the BD9x lineup, is color-coded, with part numbers of the same color indicatingpin compatibility. For example, the BD9Axxx seriesin green supports input rail voltages of 3.3V and 5.0Vin output currents of 1A, 3A, 4A, and 6A. Current-
d l i ili d f f l d A d
SW=570kHz
SW=570kHz
SW=1MHz
0 5 BD9G101G
1.0
BD9E102FJ
BD9B100MUV BD9E101FJ‐LB
BD9A100MUV / BD9A101MUV‐LB BD9E100FJ‐LB
30V
40V
40V
45V
DC/DC Converters Selection Guide www.rohm.com
mode control is utilized for fast load response. Andthe models are pin-compatible with one another,making replacement easy in response to changingcurrent requirements. 44
Input Rail Voltage (V)
0.5 BD9G101G
3.3 5.0 12 24
45V
DC/DC Switching Regulators Buck Converters (Integrated FET Switch)DC/DC Switching Regulators Buck Converters (Integrated FET Switch)
24VBD9x Series : Pin Compatibility Chart
BD9Axxx BD9Bxxx BD9Cxxx BD9DxxxBD9Dxxx BD9ExxxBD9Exxx
3.3V5.0V
12V
*2
SeriesBD9A100 1A *1BD9A300 3A *1BD9A600 6A *1
SeriesBD9B100 1A *1BD9B200 2A *1BD9B300 3A *1BD9B400 4A *1BD9B500 5A *1
SeriesBD9C301 3ABD9C401 4ABD9C501 5ABD9C601 6A
SeriesBD9D320 3ABD9D321 3A *1
SeriesBD9D320 3ABD9D321 3A *1
SeriesBD9E100 1.0A 1MHzBD9E101 1.0A 570kHzBD9E102 1.0A 570kHz *1BD9E300 2.5A 1MHzBD9E301 2 5A 570kHz
SeriesBD9E100 1.0A 1MHzBD9E101 1.0A 570kHzBD9E102 1.0A 570kHz *1BD9E300 2.5A 1MHzBD9E301 2 5A 570kHzCo
mpatib
leCo
mpatib
le
Pin Compatible
Compatib
leCo
mpatib
le
Compatib
le
ompatib
le
Compatib
leCo
mpatib
le
BD9B500 5A *1BD9B600 6A *1
Current Mode Control On Time Control Current Mode Control
BD9E301 2.5A 570kHzBD9E302 3.0A 570kHz *1BD9E303 3.0A 300kHz
BD9E301 2.5A 570kHzBD9E302 3.0A 570kHz *1BD9E303 3.0A 300kHz
Current Mode ControlOn Time Control
Pin C
Pin C
Pin C
Pin C
Pin C
Pin C
Pin C
Pin C
*1 : Automatically switches from PWM to PFM at lighter loads*2 : Only one terminal is required to switch from the CR component to jumper resistance
BD9E151 differs from the red BD9Exxxseries. Compatible with input rail voltagesof 12V and 24V, the units achieveasynchronous rectification via current mode
The selection chart on the next slideprovides a breakdown of the BD9x seriesbased on rectification method, controlmode and input voltage/output current
Similarly, the green BD9Bxxx series,which employs the on-time control method,is pin-compatible across all availableoutput currents (1A 2A 3A 4A 5A and
Current mode control is adopted and ofcourse all models within the series are pin-compatible.The orange BD9Dxxx series is compatible
y q p j p
asynchronous rectification via current modecontrol. Provides 1.2A output current in acompact 2mm×3mm×0.6mm package.BD9G101 delivers asynchronousrectification and current mode control up to
i l f 42V E il fi
mode, and input voltage/output currentranges. 2 types of rectification are utilized,asynchronous (diode) and synchronous.Asynchronous rectification utilizes anexternal diode instead of a low-side switch,
d i IC di H if th
output currents (1A, 2A, 3A, 4A, 5A, and6A) and features faster load response thanthe BD9Axxx series for improvedefficiency at light loads. In addition, pincompatibility with the BD9Axxx series
bl l t h d i
The orange BD9Dxxx series is compatiblewith input rail voltages of 5.0V or 12V.Only one output current (3A) is offered,selectable with/without high efficiencylight load mode.Th d BD9E i it bl f il an input voltage of 42V. Easily configure
0.5A output power supplies.reducing IC die area. However, if theoutput voltage is low efficiency suffers.But when the output voltage is highefficiency is the same as with synchronousrectification. In contrast, synchronous
enables easy replacement when designchanges require faster load response.The blue BD9Cxxx series supports inputrail voltages of 5V or 12V in outputcurrents of 3A, 4A, 5A, and 6A.
The red BD9Exxx series, suitable for railvoltages of 12V or 24V, utilizes currentmode control and is available in outputcurrents of 1A, 2.5A, 3A and300kHz/570kHz/1MHz switching
DC/DC Converters Selection Guide www.rohm.com
rectification minimizes efficiency dropsacross the entire output voltage range andensures continuous, stable operation evenwhen the load current decreases. 55
frequencies. The 1A and 3A productsfeature high efficiency at light load. Allmodels are pin-compatible.
RectificationRectification
BD9x Series Selection Chart Users can select between 2 types ofcontrol method: current mode and on-
Rectification Method
Rectification Method
Synchronous Rectification
AsynchronousRectification
(Diode Rectification)
Control ModeControl Mode Control ModeControl Mode
time control. Current mode providesfaster load response characteristics thanconventional voltage mode control, andphase compensation settings are easilyimplemented. In addition, output ripple
On‐Time Current Mode
Light‐Load ModeLight‐Load Mode
NoYes
Light‐Load ModeLight‐Load Mode
NoYes
Light‐Load ModeLight‐Load Mode
No
Current Mode voltage is small. On-time controlfeatures faster load response than currentmode and doesn‘t require phase-compensation.On-time control was further improved by
BD9E1516.0‐28V, 1.2A
BD9G1016.0‐42V, 0.5A
BD9E1516.0‐28V, 1.2A
BD9G1016.0‐42V, 0.5A
BD9Axxx2.7‐5.5V, 1A‐6A
BD9Ex027.0‐26V, 1A‐3A, 570kHz
BD9Cxxx4.5‐18V, 3A‐6A
BD9Ex007.0‐36V, 1A‐2.5A, 1MHz
BD9Axxx2.7‐5.5V, 1A‐6A
BD9Ex027.0‐26V, 1A‐3A, 570kHz
BD9Cxxx4.5‐18V, 3A‐6A
BD9Ex007.0‐36V, 1A‐2.5A, 1MHz
BD9Bxxx2.7‐5.5V, 1A‐6A
BD9D3214.5‐18V, 3A
BD9D3204.5‐18V, 3A
BD9Bxxx2.7‐5.5V, 1A‐6A
BD9D3214.5‐18V, 3A
BD9D3204.5‐18V, 3A
On time control was further improved byincreasing load response using ROHM’sproprietary H3RegTM control method.Models equipped with a high-efficiencylight load mode are available thatconserve power during standby When
AsynchronousAsynchronous
570kHz
BD9Ex017.0‐36V, 1A‐2.5A, 570kHz
BD9E3037.0‐36V, 3A, 300kHz
570kHz
BD9Ex017.0‐36V, 1A‐2.5A, 570kHz
BD9E3037.0‐36V, 3A, 300kHz
conserve power during standby. Whenthe load current decreases switchingfrequency and operating current arereduced, improving efficiency. However,since the switching frequency will varyd di th l d t i lAsynchronous
RectificationCurrent Mode Control
AsynchronousRectification
Current Mode Control
Synchronous RectificationCurrent Mode Control
Synchronous RectificationCurrent Mode Control
Synchronous RectificationOn‐Time Control
Synchronous RectificationOn‐Time Control
depending on the load current, signalinterference within the device must betaken into account, along with increasingoutput ripple voltage.
Thin, Compact Packages
The exposed pad enables efficient heatdissipation from the bottom of thepackage to the PCB, making it possible
VQFN016V3030HTSOP‐J8
DC/DC Converters Selection Guide www.rohm.com
p g , g pto offer a 6A DC/DC solution in acompact form factor.
3.00mm×3.00mmh: 1.00mm
4.90mm×6.00mmh: 1.00mm
66
3.3V/5V Input Rail SolutionsPower Supply Solutions for Consumer Equipment
BD9B300MUV automatically switches tolight load mode
BD9A300MUV automatically switches to
DC/DC Switching Regulators Buck Converters (Integrated FET Switch)DC/DC Switching Regulators Buck Converters (Integrated FET Switch)
NAND Flash Memory3.3V or 5V BD9A300MUV
orBD9A600MUV
PC/Tablet board
E bl
90
100
BD9A300MUV automatically switches tolight load mode
3.3V/3A
3.3V/6A
BD9A100MUV/BD9A300MUV/BD9A600MUV/BD9B300MUV generate low voltages (i.e. 1.8V) from a 3.3V or 5V supply
BD9A100MUV DDR Memory
Enable
40
50
60
70
80
Efficiency (%
)
BD9A300MUVPWM fixed mode
1.8V/1A
2.5V/1A
Example: Storage
BD9A100MUV Controllers‐ DDR‐ NAND Flash‐ I/F‐ I/OBD9B300MUV
0
10
20
30
40
ConditionsVIN = 5.0VVO = 1.8VfSW = 1MHz
/
1.2V/3A
Product Example: BD9B300MUVBD9B300MUV Efficiency vs. Load Current
0.001 0.01 0.1 1 10
Load Current (A)
PVIN PGDVIN
PGDPVIN PGDBD9B300MUV
Input Voltage Range : 2.7V to 5.5V Output Voltage Range : 0.8V to (VIN×0.8)V Reference Voltage : 0 8V±1 0%
15mm×8mmEN
BOOT
SWVOUT
AVIN
AGND
PGND
Enable10µF
0.1µF
R1
CBOOT
1.0µH
AVIN
EN
AGND
PGND
BOOT
SW
Reference Voltage : 0.8V±1.0% Output Current : 3A Switching Frequency : 1MHz / 2MHz Built-in Switching FET : 35mΩ Circuit Current : 35μA Fast transient response characteristics via fixed
FREQFB
SS
MODE
CSS
R2
R122µF×2CFBSS
MODE
FREQ FB
pon-time control
High efficiency Light Load Mode Selectable Light-Load Automatic Switching
and PWM Fixed modes Adjustable soft start Power Good output
DC/DC Converters Selection Guide www.rohm.com
BD9B300MUV Application Circuit
BD9B300MUV PCB 77
Power Good outputMultiple protection functions
Over Current Protection (OCP), Short Circuit Protection (SCP),Thermal Shutdown Protection(TSD), Under-Voltage Lock Out (UVLO)
2 series offered to meet a variety of system requirements
Both the BD9AxxxMU and BD9BxxxMUV series are pin-compatible from 1A to 6A, allowing users to select the ideal solution to meet set demands. Operation automatically switches between high speed PWM mode for larger currents and power saving SLLMTM (PFM mode) for smaller load currents The BD9BxxxMUV series is a higher performance line that enables easy
Part No. Control Method Light Load Operation Function Differences
Increasing Performance
high-speed PWM mode for larger currents and power-saving SLLMTM (PFM mode) for smaller load currents. The BD9BxxxMUV series is a higher performance line that enables easy replacement with only minor changes to the PCB layout (1 pin), making it possible to quickly respond to sudden design changes.
BD9B100MUVBD9B200MUVBD9B300MUVBD9B301MUV‐LBBD9B400MUVBD9B500MUV
Constant On-Time Deep SLLM
• Constant on-time method results in faster transient response than the BD9AxxxMUV series• Phase compensation not required• Improved efficiency across the entire load range (>BD9AxxxMUV)• MODE terminal = Low → Automatic light load switching, MODE terminal = High → Fixed
PWM mode• FREQ terminal = Low → 2MHz operation FREQ = High → 1MHz (2MHz operation enables
High Performance Series
High Performance Series
SLLM : Simple Light Load Mode
BD9B500MUVBD9B600MUV
FREQ terminal Low → 2MHz operation, FREQ High → 1MHz (2MHz operation enables support for compact 1μH coils)
BD9A100MUVBD9A101MUV‐LBBD9A300MUVBD9A301MUV‐LB Current Mode SLLMTM
• MODE terminal = Low → Fixed PWM mode, MODE terminal = High → Automatic light load switching(Same function as the BD9Bxxx series but logic is reversed)BD9A400MUV
BD9A600MUV
(Same function as the BD9Bxxx series, but logic is reversed)
SLLMTM : Simple Light Load Mode (automatically switches from PWM to PFM at light loads)
EN
ABL
E
PG
OO
D
EN
ABL
E
PG
OO
D
EN
ABL
E
PG
OO
D
EN
ABL
E
PG
OO
D
1
2
16 15 14 13
12
11
PVIN
SW
BOOTPGDENAVIN
BD9A300MUV
VOUTVINL1
C1
C2
C6
1
2
16 15 14 13
12
11
PVIN
SW
BOOTPGDENAVIN
BD9A300MUV
VOUTVINL1
C1
C2
C6
1
2
16 15 14 13
12
11
PVIN
SW
BOOTPGDENAVIN
BD9B300MUV
VOUTVINL1
C1
C2
C6
1
2
16 15 14 13
12
11
PVIN
SW
BOOTPGDENAVIN
BD9B300MUV
VOUTVINL1
C1
C2
C6
BD9AxxxMUVBD9AxxxMUV BD9BxxxMUVBD9BxxxMUV
5
3
4
6 7 8
10
9
PGND
AGND FB ITH MODE
SS
GND
GND
C C
C5
C7
C8
R15
3
4
6 7 8
10
9
PGND
AGND FB ITH MODE
SS
GND
GND
C C
C5
C7
C8
R15
3
4
6 7 8
10
9
PGND
AGND FB FREQ MODE
SS
BD9B300MUV
GND
GND
R1
C C
C5
C7
C8
C4
5
3
4
6 7 8
10
9
PGND
AGND FB FREQ MODE
SS
BD9B300MUV
GND
GND
R1
C C
C5
C7
C8
C4
BD9AxxxMUVBD9AxxxMUV BD9BxxxMUVBD9BxxxMUV
DC/DC Converters Selection Guide www.rohm.com
R2 R
3C
3
J1R2 R
3C
3
J1 R2 J3
J2
C4
J1R2 J3
J2
C4
J1
88
12V Input Rail SolutionPower Supply Solutions for Consumer Electronics
DC/DC Switching Regulators Buck Converters (Integrated FET Switch)DC/DC Switching Regulators Buck Converters (Integrated FET Switch)
Tuner, AV12V BD9D320EFJ
BD9D321EFJIsolatedAC/DC
BD9D320EFJ/BD9D321EFJ/BD9C301FJ/BD9C401EFJ/BD9C501EFJ/BD9C601EFJ generate 3.3V or 5V from a 12V power supply
85 to 265VAC 5V/3A 80
90
100
VO =5.0VVO = 3.3VVO = 1.8V
BD9D321EFJ
USB ports
AC/DC
1.8V/3A
5V/3A
DDR Memory
BD9D320EFJBD9D321EFJ
BD9D320EFJBD9D321EFJ
Example:AV devices
40
50
60
70
EFFICIEN
CY (%
)
y
BD9C301FJBD9C401EFJ
Controller‐ DDR‐ I/FI/O
3.3V/3A
3.3V
BD9D321EFJ
BD9D320EFJBD9D321EFJ
0
10
20
30
E
ConditionsVIN = 12V
Product Example: BD9D321FEJBD9C501EFJBD9C601EFJ
‐ I/O3A, 4A,5A, 6A
BD9D321EFJ: Efficiency vs. Load Current
BD9D321EFJ
Input Voltage Range : 4.5V to 18V Output Voltage Range : 0.765V to 7.0V,
(VIN×0.07)V to (VIN×0.65)V
0.001 0.01 0.1 1 10LOAD CURRENT (A)
VIN
EN
GND
BOOT
SWVOUT
50mV/div
VIN = 12VVOUT = 1.8V
Reference Voltage : 0.765V±1.5% Output Current : 3A Switching Frequency : 700kHz Built-in FET Switch : 100mΩ, 70mΩ Fast transient response characteristics via constant
ti t lVREG
SSFB ILOAD
2A/div
100μs/div
IO = 1A→3A→1A
on-time control No phase compensation components required Compatible with output ceramic capacitors Synchronous rectification type High efficiency mode for light loads Variable soft start function prevents inrush current
DC/DC Converters Selection Guide www.rohm.com
BD9D321EFJ Application CircuitBD9D321EFJ Transient Response
BD9D320EFJ PCB
17mm×20mm
99
Variable soft start function prevents inrush currentduring power on
Multiple protection functionsOver Current Protection (OCP), Short-Circuit Protection (SCP),Thermal Shutdown (TSD), Under-Voltage Lock Out (UVLO)
Power Supply Solution for Home Appliances24V Input Rail Solution
DC/DC Switching Regulator Buck Converter (Integrated FET Switch)DC/DC Switching Regulator Buck Converter (Integrated FET Switch)
BD9E102FJ/BD9E302EFJ generates 3.3V or 5V from 15V/24V power supply. Ideal replacement for LDOs to provide greater power savings.
・Motor Driver 80
90
100
BD9E102FJExample: Refrigerator
Motor Driver・IPM (Intelligent Power Module.)
15V Sensors and Monitors‐ Thermistor (Refrigerator)‐ Thermistor (Freezer)Isolated
AC/DC
85 to 265VAC
5.0V/1A
40
50
60
70
80
Efficiency (%
)
LDOBD9E102FJ
Replaces LDO
‐ CO2 SensorAC/DC
Controllers‐ Digital Signal‐ NetworkTouchscreen
15V 5.0V/3A
0
10
20
30
40
ConditionsVIN = 12VVO = 5.0V
(BA50BC0WT)
BD9E302EFJ
Replaces LDO
Product Example: BD9E102FJ
‐ Touchscreen‐ Compressor
01 10 100 1000
Load Current (mA)
BD9E102FJ: Efficiency vs. Load Current Input Voltage Range : 7.0V to 26V Output Voltage Range : (VIN×0.143)V to (VIN×0.7)V
VIN12V
Enable
VIN
EN
SW
BOOT
10μF 0.1μF
6.8μH
22μF
BD9E102FJ
VO5.0V
VIN
EN
BOOT
SW
BD9E102FJ(VIN×0.143) ≥ 1.0V Reference Voltage : 0.8V±2.0% Output Current : 1.0A Switching Frequency : 570kHz Supports 28V input for home appliances
i h ffi i li h l d d i db Enable EN
COMP AGND PGND FB430kΩ
82kΩ
22μFEN
AGNDCOMP FBPGND High efficiency at light loads saves power during standby Built-in FET switch : 250mΩ, 200mΩ Fast transient response characteristics via current mode control Easily set phase compensation No external diode required (for synchronous rectification) Soft start prevents inrush current during power on
DC/DC Converters Selection Guide www.rohm.com
BD9E102FJ Application CircuitsBD9E102FJ Evaluation Board
1010
Soft start prevents inrush current during power on Multiple protection functions
Over Current Protection (OCP), Short Circuit Protection (SCP),Thermal Shutdown (TSD), Under Voltage Lock Out (UVLO)
24V Input Rail SolutionPower Supply Solutions for Industrial Products
DC/DC Switching Regulators Buck Converters (Integrated FET Switch)DC/DC Switching Regulators Buck Converters (Integrated FET Switch)
BD9E100FJ/BD9E101FJ/BD9E300EFJ/BD9E301EFJ/BD9E303EFJ generate 3.3V or 5V from a 12V/24V power supply
70
80
90
100
VO = 12V
VO = 5.0VBase UnitASIC
24VBD9E100FJ‐LBIsolated
AC/DC85 to 265VAC
5V/1A
40
50
60
70
Efficiency (%
)
Conditions
‐ ASIC
BD9E101FJ‐LB I/O Unit‐ ASIC
AC/DC
3.3V/1A
0
10
20
30
0 0 5 1 1 5 2 2 5
ConditionsVIN = 24VBD9E300EFJ‐LB
BD9E303EFJ‐LB
5V/2.5A Analog Unit‐ ASIC
1.8V/3A CPU Unit‐ CPU
Product Example: BD9E300EFJ‐LB
0 0.5 1 1.5 2 2.5Load Current (A)
BD9E300EFJ‐LB: Efficiency vs. Load Current
VIN BOOTBD9E300EFJ‐LB Long-term stable supply suitable for industrial applications
Supports 40V input for industrial equipment
EN
AGNDCOMP
SW
FBPGND BD9E300EFJ PCB
27mm×10mm
pp p q p Input Voltage Range : 7.0V to 36V Output Voltage Range : (VIN×0.15)V to (VIN×0.7)V
(VIN×0.15) ≥ 1.0V Reference Voltage : 1.0V±2.0% Output Current : 2.5A BD9E300EFJ PCB High 1MHz switching frequency enables compatibility with smaller
inductors Built-in FET switch : 170mΩ, 140mΩ Fast transient response characteristics via current mode control No external diode required (for synchronous rectification) Soft start prevents inrush current during power on
30kΩ
4700pF
DC/DC Converters Selection Guide www.rohm.com
BD9E300EFJ‐LB Application Circuit
Exposed pad ensures efficient heat dissipation1111
Soft start prevents inrush current during power onMultiple protection functions
Over Current Protection (OCP), Short Circuit Protection (SCP),Thermal Shutdown (TSD), Under Voltage Lock Out (UVLO)
Product Example: BD9E151NUX
DC-DC converter with built-in 30V MOSFET Input voltage range : 6 0V to 28V VIN VCC BST
BD9E151NUXVCC BST
BD9E151NUX Input voltage range : 6.0V to 28V Output voltage range : (VIN×0.06)V to (VIN×0.7)V
(VIN×0.06) ≥ 1.0V Reference voltage : 1.0V±1.0% Output current : 1.2A Switching frequency: 600kHz
24V
Enable
VCC
EN
LX
BST
10μF 0.1μF
15μH
47μF
VOUT5.0V
VCC
EN
SSVC
BST
LX
FBGND Automatically switches to Pulse Skip Mode during light loads
(via diode rectification) to maintain high efficiency Integrated high side switching FET: 80mΩ Current mode control enables fast transient response Easily set phase compensation Variable soft start function prevents inrush current during power ON
VC SS GND FB
2.7kΩ
1000pF12kΩ
3kΩ
0.047μF
SSVC FBGNDVSON008X2030
2.0mm×3.0mmh: 0.6mm
BD9E151NUX Application Circuit
Variable soft start function prevents inrush current during power ONMultiple protection circuits
Overcurrent protection (OCP), overvoltage protection (OVP),Thermal shutdown (TSD), Under voltage lock out (UVLO)
Product Example: BD9G101G
DC-DC Converter with built-in 45V MOSFET Input voltage range : 6.0V to 42V Output voltage range : (VIN×0.15)V to (VIN×0.7)V
(V ×0 15) 1 0V
VIN24V VCC
LX
BST
4.7μF 0.015μFVOUT
VCC BST
LX
BD9G101G
80
90
100
VIN=12VVO=5.0V
(VIN×0.15) ≥ 1.0V Reference voltage : 0.75V±1.5% Output current : 500mA High 1.5MHz switching frequency makes it possible
to use smaller inductors Automatically switches to Pulse Skip Mode during light loads
Enable EN
GND FB
LX
3.9kΩ
6.8μH
10μF
5.0V
EN
LX
FBGND
40
50
60
70
EFFICIEN
CY (%
) VIN=24VVO=5.0V
y p g g(via diode rectification) to maintain high efficiency
Integrated high side switching FET: 800mΩ Current mode control enables fast transient response Built-in phase compensation circuit Soft start function prevents inrush current during power ONM lti l t ti i it
BD9G101G Application Circuit
0.1μF680Ω
0
10
20
30
E
DC/DC Converters Selection Guide www.rohm.com1212
Multiple protection circuitsOvercurrent protection (OCP), Thermal shutdown (TSD),Under voltage lock out (UVLO) SSOP6
2.9mm x 2.8mmh: 1.25mm
1 10 100 1000LOAD CURRENT (mA)
BD9G101G: Efficiency vs Load Current
6MHz High Frequency Switching RegulatorsBU9000xGWZ Series 100
DC/DC Switching Regulators Buck Converters (Integrated FET Switch)DC/DC Switching Regulators Buck Converters (Integrated FET Switch)
70
80
90
cien
cy (%
)
Input Voltage Range : 2.3V to 5.5V Output Voltage : 1.2V, 1.25V, 1.8V, 2.5V, 3.0V, 3.3V Output Voltage Accuracy: ±2.0% Output Current : 1.0A
40
50
60
1 10 100 1000
3.6V→3.0V3.6V→1.8V5.0V→3.3V3.6V→1.2V
L : LQM21MPN1R0NG0 (Murata)
Effic 6MHz (max.) switching operation
Ultra-compact chip scale package: 1.3mm x 0.9mm Fast transient response characteristics via hysteresis control No phase compensation components required PWM/PFM automatic switching function ensures high efficiency across
all load regions 1 10 100 1000Load Current (mA)
BU9000xGWZ: Efficiency vs Load Current
all load regions Switching frequency can be fixed via forced PWM mode Soft start prevents inrush current during power onMultiple protection circuits
Over Current Protection (OCP), Thermal Shutdown (TSD), Under Voltage Lock Out (UVLO)
Ultra‐Compact Wafer‐Level Chip‐Scale Package
VO
50mV/div
I
7mm×4mm
UCSP35L11.3mm×0.9mm×0.4mm
Output Voltage Part No. Input Voltage Range Switching Frequency
PWM/PFMAutomatic Switching
Forced PFM Forced PWMBU90003GWZ Transient Response (50mA → 350mA)
IOUT200mA/div
10μs/div
BU90002GWZ PCB
VIN
EN GNDMODE
LX
FB
Switching
1.2V BU90003GWZ 2.3V to 5.5V 4MHz -
1.25V BU90007GWZ 2.3V to 5.5V 4MHz -
1.8V BU90004GWZ 2.3V to 5.5V 5.4MHz -
2 5V BU90005GWZ 2 3V to 5 5V 6MHz -
DC/DC Converters Selection Guide www.rohm.com
BU9000xGWZ Application Circuit
GNDMODE2.5V BU90005GWZ 2.3V to 5.5V 6MHz (100mAmax)
3.0V BU90006GWZ 2.3V to 5.5V 6MHz -
3.3V BU90002GWZ 4.0V to 5.5V 6MHz -
1313
Portable Power Supply Solution
DC/DC Switching Regulator Boost / Buck‐Boost / SEPIC and Inverting Converter DC/DC Switching Regulator Boost / Buck‐Boost / SEPIC and Inverting Converter
NAND Flash Memory1.8V to 5.5V
BD8306MUVRechargeable
orDry‐Cell Battery
BD8306MUV generates 3.3V or 5.0V from 1 lithium-ion cell or 2-3 alkaline/NiCd/NiMH cells
3.3V/1A
or5 0V/0 7A
Product Example:BD8306MUV
5.0V/0.7A
BD9A100MUV Controllers
BD9A100MUV DDR Memory1.8V
2.5V Input Voltage Range : 1.8V to 5.5V Output Voltage Range : 1.8 to 5.2V Reference Voltage : 0.5V±1.0% Integrated 2A FET switch Configure a high efficiency buck-boost DC/DC converter with a single inductor S ft t t t i h t d i
BD9A100MUV Controllers‐ DDR‐ NAND Flash‐ I/F‐ I/OBD9B300MUV
1.2V
Soft start prevents inrush current during power on Operating frequency: 500kHz to 1.5MHzMultiple protection functions
Short Circuit Protection (SCP), Thermal Shutdown (TSD),Under Voltage Lock Out (UVLO)
PVCC PGND
PVCC Lx1
Lx1
PGND
PVCC
VCC
STB
PGND
Lx2
Lx2
BD8306MUV
RT VOUT
FB INV
GND
VOUT
ConditionsfSW = 1MHzVO = 3.3V
DC/DC Converters Selection Guide www.rohm.com
BD8306MUV Application CircuitBD8306MUV: Efficiency vs. Output Current
1414
Power Supply Solutions for FPGABD95601MUV-LB and BD95602MUV-LB utilize original H3RegTM technology to provide the fast transient response characteristics required for FPGAs. These power supply ICs are designed to generate power supply voltages that meet the tight voltage accuracy specifications demanded by FPGAs from 12V input. In addition, compatibility with startup power supply sequences is provided.
DC/DC Switching Regulators Controllers (External FET Switch)DC/DC Switching Regulators Controllers (External FET Switch)
BD95601MUV‐LB 1.0V±3.00%, 6A
FPGA Selection Tree
12V
1.8V±5.00%, 6A
2.0V±3.00%, 2A
BD95601MUV‐LB
BD95601MUV‐LB
BD95602MUV‐LB
1 0V±3 00% 6A
2.5V±5.00%, 8A
3.3V±5.00%, 8A
BD95601MUV LB 1.0V±3.00%, 6A
1.5V/1.35V±5.00%, 4A
1.2V±2.50%, 4A BD95602MUV‐LB Application Circuit
BD95601MUV‐LB
BD95601MUV‐LB
BD95601MUV‐LB
BD95602MUV‐LBVIN: 12V, VO: 3.3V
H3RegTM 2ch DC/DC controller delivers fast transient response
VOUT: 100mV/div
IO: 5A/divI 5A/di
3 selectable modes: Light load, Continuous PWM, and Quiet light load Adjustable soft start function prevents inrush current during power on Power Good output Input Voltage Range : 5.5V to 28V Output Voltage Range : 1.0V to 5.5V St d d V lt 0 7V±1 0%
Multiple protection functions - Over Current Protection (OCP)
O V lt P t ti (OVP)
DC/DC Converters Selection Guide www.rohm.com
BD95602MUV‐LB Fast Transient Response Characteristics1515
20μsec/div
IL: 5A/div Standard Voltage : 0.7V±1.0% Switching Frequency :150kHz to 500kHz
- Over Voltage Protection(OVP)- Thermal Shutdown (TSD)- Under Voltage Lock Out (UVLO) Avnet, Inc.
Power Module BoardFor Mini Module Plus Development System
(Kintex‐7)
Fast Transient Response Technology
H3R TM C t l E bl Q i k R t L d hH3RegTM Control Enables Quick Response to Load changes
Current mode control is a popular control method for switching regulators, but there are cases where the specifications for transient response characteristics with respect to load current changes
are insufficient. In these instances switching regulators utilizing hysteresis control are often used. Constant-on-time control, which is a type of hysteresis control, maintains constant output
voltage by feeding back ripple voltage that occurs within the output voltage and performing switching control while comparing the reference voltage with the bottom of the ripple voltage.
When the feedback voltage drops below the reference voltage a one-shot pulse is generated and the high-side switch turns on, supplying current to the output (from the input). In this method
sequential switching control is performed by simple comparison, virtually eliminating delay time for feedback control, enabling faster transient response than current mode control.
H3RegTM control is a more advanced type of constant on time control developed by ROHM. When the load current suddenly increases the output voltage drops and if the feedback voltage does
not rise higher than the reference voltage (even after the predetermined on-time) the on-time of the high-side switch is extended and more power is supplied, accelerating the return of the
output voltage. As a result, faster transient response can be obtained vs. constant on-time control. Plus, the number of switching operations during sudden load changes is decreased,
minimizing noise generation.
H3RegSW
Io
IL
SW
R
S
QController
VOUT
Vref
Driver
IL IO
Constant On Time Control: Operating Waveforms
H3RegTM Block Diagram
Io
IL
SW
DC/DC Converters Selection Guide www.rohm.com
H3RegTM Control: Operating Waveforms
t + α
1616
48V Input Buck ControllerProduct Example:BD9611MUV
DC/DC Switching Regulator Controller (External FET Switch)DC/DC Switching Regulator Controller (External FET Switch)
p
The BD9611MUV buck synchronous rectification DC/DC controller features a withstand voltage of 60V and a wide input voltage range. PWM and voltage-mode control circuits are built in, along with 2 external 10V Nch FET drive circuits. In addition, functions for adjusting the oscillation frequency and soft start time, providing overcurrent protection, and enabling synchronization with external clocks are included, providing greater design flexibility. Furthermore, an under-voltage lock out circuit (EXUVLO) with a high accuracy reference voltage for the CTL pin is connected, adjustable between VCC and GND (via resistance ratio). The controller also offers pre-bias compatibility and minimizes inrush current from the output side during startup.
Input Voltage Range : 10V to 56V Output Voltage Range : 1.0V to (VIN×0.8)V Reference Voltage : 0.8V±1.0% External Nch FET drive circuits built in
FB CLHCLLRCL
VCCCTL
Gate drive voltage : 9.0V to 11V Pre-bias compatibility Variable soft-start prevents inrush current during power on Adjustable operating frequency : 50kHz to 500kHz Set the UVLO value using external components E l l k h i i
BD9611MUV
INV
SS
REG5
RTSS
RCL
BST
HG
LX External clock synchronization Synchronous operation of multiple output channels possible using several ICs Multiple protection functions
Over Current Protection (OCP), Thermal Shutdown (TSD), Under Voltage Lock Out (UVLO)
GND PGND
RTSS
RT
SYNC
CLKOUT
REG10
LG
BD9611MUV Application Circuit
85%
90%
95%
100%
iency
VIN=24VVIN=36V
Exposed pad ensures efficient heatV = 34V VO = 12V IO= 0A→ 10A70%
75%
80%
85%
0 2 4 6 8 10 12
Effici VIN=48V
ConditionsVO = 12VfSW = 250kHz
DC/DC Converters Selection Guide www.rohm.com
BD9611MUV Efficiency vs. Load Current
Exposed pad ensures efficient heat dissipation
BD9611MUV Transient Response Characteristics
VIN = 34V, VO = 12V, IO= 0A → 10A0 2 4 6 8 10 12 Load Current[A]
1717
Medium Power / Dual Package MOSFET
Power MOSFETsPower MOSFETs
The HS8K/HP8K series are switching components for DC/DC converters that integrate high-side and low-side MOSFETs in a single package, reducing mounting area significantly.g p g g g p g , g g g yWiring inductance between the internal high-side and low-side MOSETs is minimized for improved conversion efficiency, and high efficiency operation at high frequencies is achieved by decreasing on-resistance and capacitance using the latest processes.
VIN10)
FOM=Ron×Qgd
V
D1
G1
S1/D2
HS8K/HP8K Series
4
7
ate Ch
arge Qgd
(nC
Current ProcessFOM=16
VOUT
S2
G2
/DC/DCControllerDC/DC
Controller
1 2 4 7 101
2
Gate‐Drain Ga
New ProcessFOM=8
ncy (%)
Current
NewMOSFET
Application Circuit Diagram
Improved Performance Index FOM(Figure of Merit)
On‐Resistance Ron (mΩ)
Efficien
ConditionsVIN = 19VVO = 1.05VfSW = 1MHz
Cu e tproduct
Product Example:HS8K/HP8K series 30V withstand voltage Incorporates high-side and low-side MOSFETs into a single package to
reduce mounting area
Load Current (A)
Greater efficiency during high‐frequency switching operation
Single Type
Dual TypeHigh‐sideMOSFET
Achieves high efficiency operation even at high frequencies efficiencyby combining the latest device process and packaging technologies
Performance index (FOM) improved by 2 times Nch + Nch configuration Drain current: 32A+12A
Low‐sideMOSFET
DC/DC Converters Selection Guide www.rohm.com1818
Integrated design reduces mounting area by 50%
Flyback ConverterProduct Example:BD7F100HFN‐LB
Isolated DC/DC Power SupplyIsolated DC/DC Power Supply
pThe newly developed BD7F100HFN-LB isolated flyback DC/DC converter IC stabilizes the secondary output via primary flyback voltage control, eliminating the need for a feedback path from the output. As a result, the optocoupler typically used for isolating the feedback path in conventional isolated converters is no longer required. This reduces both costs and component count considerably, improving reliability. And in terms of performance, fast load response is achieved by utilizing adaptive on-time control, while an automatic light load mode ensures high efficiency across all load regions. Cross-regulation is also greatly improved. Ideal for isolated power supplies in a variety of equipment, including isolated gate driver power supplies for inverters
Input Voltage Range : 3.0V to 40V (45V Rated) Switch Terminal Voltage : 50V (60V Rated) Switch Current Limit : 1.25A Operating Frequency : 400kHz Reference Voltage : ±1 5%
driver power supplies for inverters.
BD7F100HFN‐LB
VIN VOUT_UH
GND_UH
Ex:Inverter
Reference Voltage : ±1.5% Fast load response via adaptive type on-time control Fixed frequency operation simplifies EMC countermeasures Automatic light load mode ensures high efficiency across all load regions Eliminates the need for parts that cross the isolation boundary, improving
functional safety
MCU
VINVIN
Isolator
VOUT_UH
GND_UH
Gate Driver
VOUT_UH
GND_UH
UH
Limited-life components not required, enabling long-term operation Supports multi-output configurations for superior cross-regulation Load compensation function for secondary SBD Output voltage adjustable based on 2 external resistors and transformer winding ratio Soft start function
BD7F100HFN‐LB
V
VIN VOUT_WH
GND_WH
V WH V WHMultiple protection circuitsOver Current Protection (OCP), Thermal Shutdown (TSD), Under VoltageLock Out (UVLO)
VIN
Isolator
VOUT_WH
GND_WH
Gate Driver
VOUT_WH
GND_WH
WH
VIN VOUT_LVIN
BD7F100HFN‐LB
VIN
GND_L
VOUT_L VOUT_L
SDX/EN
COMP
VIN
FB
BD7F100HFN‐LB
SW
DC/DC Converters Selection Guide www.rohm.com
Isolator
GND_L
Gate Driver
GND_L
UL
Isolator Gate Driver WL
1919BD7F100HFN-LB Application Circuit (24V→5V)
AGND PGNDREF
Vcc1 Vcc2Ex:RS485 TransceiverSDX/EN
VIN
BD7F100HFN‐LB
Ex:RS485 TransceiverSDX/EN
COMP
AGND
FB
PGND
BD7F100HFN‐LB
REF
SW
BD7F100HFN-LB Application Circuit (24V→±15V) MCU
DE
DIRO
Vcc1 Vcc2Vcc1
IsolatorRS485 transceiver
SDX/ENVIN
FB
BD7F100HFN‐LB5.25
5
6
7
8
Pow
er (W
)
COMP
AGND
FB
PGNDREF
SW
BD7F100HFN LB Application Circuit (5V→5V)5.05
5.1
5.15
5.2
oltage (V
) With Load Compensation
2
3
4
5
Max
. Out
put BD7F100HFN-LB Application Circuit (5V→5V)
4.8
4.85
4.9
4.95
5
Outpu
t Vo
Without Load Compensatio
ConditionsVIN = 24VVOUT = 5 0V
Load Compensation Function Efficiency
0
1
0 5 10 15 20 25 30 35 40 45 50VIN Voltage (V)
BD9F100HFN-LB: Max. Output Power vs VIN Voltage
4.750 200 400 600 800 1000
Load Current (mA)
VOUT = 5.0V
DC/DC Converters Selection Guide www.rohm.com
The Load Compensation Function corrects the output voltage drop based on the Vf characteristics of the secondary SBD that varies depending on the load currentBD7F100HFN-LB Evaluation Board
2020
Linear Regulators Low Dropout (LDO) RegulatorsLinear Regulators Low Dropout (LDO) Regulators
Low Noise Power Supply SolutionsConnecting LDO regulators after switching regulators reduces noise while improving efficiency making them ideal for circuits requiring low noise power supplies such as communicationConnecting LDO regulators after switching regulators reduces noise while improving efficiency, making them ideal for circuits requiring low-noise power supplies such as communicationsystems.
12V/24VDC SwitchingRegulator
5VUSB Ports
Controllers‐ DDR‐ I/F‐ I/O
3.3VSwitchingRegulator
SwitchingRegulator
2.5VBD12IC0WEFJ Transceiver
PLL
1.2V
BD18IA5WEFJ1.8V
1A
0.5A
Product Examples: BDxxIxx , BDxxHxx, BDxxGxx, BDxxFxx series
Input Voltages : 7V, 10V, 15V, 30V Output Currents : 0.1A, 0.3A, 0.5A, 1.0A, 1.5A Fixed and variable output voltage types available (adjustable via external resistor) Output Voltage Range : 0.8V to 15V Output Voltage Accuracy : ±1% C ibl i h i i
Vcc
EN
Vo
FB
BD00IA5WEFJ
GND
Vcc
EN
Vo
Vo_sBD18IA5WEFJ
GND
BD00IA5WEFJ Application Circuit
Compatible with output ceramic capacitors Enable function Soft-start prevents inrush current during power ON Thermal Shutdown (TSD) Over Current Protection (OCP)
BD18IA5WEFJ Application Circuit
DC/DC Converters Selection Guide www.rohm.com
BD00IA5WEFJ Application Circuit
2121
B D 1 8 H A 5
Part Number Explanation Note:Some part numbers do not conform to these guidelines
W EFJ
BDxxFA1FP3Series only
B D 1 8 H A 5
Output Voltage00 : Adjustable10 : 1.0V12 : 1 2V
Package
W EFJ
EFJ : HTSOP‐J8 HFV : HVSOF6
50 : 5.0V54 : 5.4V60 : 6 0V
HTSOP‐J84.9mm×6.0mm
H: 1.0mm
SOT89‐34.5mm×4.15mm
H: 1.5mm12 : 1.2V1C : 1.25V15 : 1.5V18 : 1.8V25 : 2.5V26 : 2.6V30 : 3.0V
NUX : SON008X2030FP3 : SOT89‐3
Brank : noneShutdown Switch
60 : 6.0V70 : 7.0V80 : 8.0V90 : 9.0VJ0 : 10VJ2 : 12VJ5 : 15V
H: 1.0mm
BDxxIxxWHFVSeries only
BDxxGA3WNUXSeries only
H: 1.5mm
30 3 033 : 3.3V
Output Current
A3 : 300mA A5 : 500mA
Maximum Input VoltageI : 7VH : 10V
Brank : none W : having
J5 5
HVSOF61.6mm×3.0mm
H: 0 75mm
VSON008X20302.0mm×3.0mm
H: 0 6mm
Product Example:BUxxUA3WNVX Series
C0 : 1AC5 : 1.5A
G : 15VF : 30V
H: 0.75mm H: 0.6mm
Compact packages with exposed pad for efficient heat dissipation characteristics
900
Compact 1.0mm x 1.0mm x 0.6mm package (SSON004X1010) Input Voltage Range : 1.7V to 5.5V Input Rated Voltage : 6V Output Current : 300mA
Product Example:BUxxUA3WNVX SeriesVIN
STBY
VOUT
BU18UA3WNVX
GND500
600
700
800
900
ut V
olta
ge (m
V)
Conditions:IOUT = 200mA
Existing P d t Output Voltage : 1.0V to 3.7V
Output Voltage Accuracy : ±1% (±25mV for VOUT<2.5V products) Circuit Current : 50μA Supports ceramic output capacitors Enable function O di h f i
BU18UA3WNVX Application Circuit
SSON004X1010 100
200
300
400
500
I/O D
ropo Product
BUxxUA3WNVX Series
DC/DC Converters Selection Guide www.rohm.com
Output discharge function Thermal Shutdown (TSD) Over Current Protection (OCP)
2222
SSON004X10101.0mm x 1.0mm
H: 0.6mm
Compact Package
01 1.5 2 2.5 3
VOUT Voltage (V)
Input/Output Dropout Voltage Characteristics
BUxxUA3WNVX Series
Linear Regulators for DDR SDRAMLinear Regulators for DDR SDRAM
DDR SDRAM Power Supply Solution
3.3V to 5.0V BD9B300MUVBD9B600MUV
1.5V VDDQ
VTTRT
DDR memory requires 3 power supplies. VDDQ used for driving the memory cell requires fast load response and high voltage accuracy to maintain reliable memory operation. Input to the memory cell is based on the voltage VREF, which is half of VDDQ. Although the
Controller DDR3L SDRAMBD35395FJ‐M
VDDQ
VTT
VTT_INVCC
VREF…
VDDQ VDDQ
g Q gnecessary current is small, voltage accuracy is required, along with the need to follow VDDQ voltage fluctuations. The VTT memory output termination voltage terminates memory output through termination resistors RT A voltage level half of VDDQ is needed to
Supports JEDEC Compatible DDR1/2/3/3L
resistors RT. A voltage level half of VDDQ is needed to follow changes to the VDDQ voltage, which is the same as VREF. As the memory output switches to High or Low the output current needs to quickly follow source or sink operation.
Supports JEDEC‐Compatible DDR1/2/3/3L
Product Example:BD35395FJ‐M
BD35395FJ-M is a termination regulator compatiblewith JEDEC-compliant DDR1/2/3/3L SDRAM. VTT,
Input Voltage Range : 2.7V to 5.5Vone of the 3 power supplies required for DDRmemory, is built in. VTT output is a linear powersupply with integrated N-MOSFET capable ofsupplying a maximum of 1A to both the sink andsource. Superior transient response characteristics are
p g g Output Current : ±1A DDR1/2/3/3L SDRAM compatible Push-Pull power supply built in for termination (VTT) Compatible with ceramic output capacitors Enable function
achieved using a high-speed internal opamp. A biassupply of 3.3V or 5.0V is required to drive theinternal N-MOSFET. To maintain the requisitevoltage accuracy defined by JEDEC, the feedbackpin (VTTS) is separated from the reference input pin
Power Good output Thermal Shutdown (TSD) Under Voltage Lock Out (UVLO)
DC/DC Converters Selection Guide www.rohm.com
p ( ) p p p(VDDQ), resulting in superior output voltageaccuracy and load regulation.
BD35395FJ-M Application Circuit
2323
3.3V/5V Rail Input
DC/DC Switching Regulators Buck Converters (Integrated FET Switch)DC/DC Switching Regulators Buck Converters (Integrated FET Switch)
wer Goo
d
ernally
nchron
izable
ustable Soft
rt nchron
ous
ctifier
ht‐Load
ciency
er‐Current
tection
ermal Protection
Part No.
InputVoltageMaximumRating(V)
OutputCurrent(A)
InputVoltageRange(V)
Output Voltage(V)
SwitchingFrequency(MHz)
ControlMode
Features
DescriptionOperating
Temperature()
Package(mm)
Pow
Exte
Syn
Adj
Star
Syn
Rec
Ligh
Effi
Ove
Pro
The
BD9122GUL 7 0.3 2.5~5.5 1.0~2.0 1 Current ‐ ‐ ‐ Latch Latch ‐25~+85 VCSP50L2(2.5×1.1)
BD9161FVMBD9161FVM‐LB
7 0.6 2.5~4.5 1.0~3.3 1 Current ‐ ‐ ‐ Latch Latch ‐25~+85 MSOP8
BU9B001G 7 0.6 2.3~5.5 2.5 1.2 On‐time ‐ ‐ ‐ ‐ Recove Recove ‐40~+85 SSOP6ry ry
BU9006GUZ 7 0.75 2.5~4.5 1.0~VIN 2 Current ‐ ‐ ‐ ‐ Recovery
Recovery
Incorporates in/output biasswitch, 100% Duty
‐35~+85 VCSP35L1(1.6×1.6)
BD9109FVMBD9109FVM‐LB
7 0.8 4.5~5.5 3.3 1 Current ‐ ‐ ‐ Latch Latch ‐25~+85 MSOP8
BD9102FVM 7 0.8 4.0~5.5 1.24 1 Current ‐ ‐ ‐ Latch Latch ‐25~+85 MSOP8
BD8966FVM 7 0.8 4.0~5.5 1.0~2.5 1 Current ‐ ‐ ‐ ‐ Latch Latch ‐25~+85 MSOP8
BD9106FVMBD9106FVM‐LB
7 0.8 4.0~5.5 1.0~2.5 1 Current ‐ ‐ ‐ Latch Latch ‐25~+85 MSOP8
BD9120HFN 7 0.8 2.7~5.5 1.0~1.5 1 Current ‐ ‐ ‐ Latch Latch ‐25~+85 HSON8
BD8967FVM 7 0.9 4.5~5.5 3.3 1 Current ‐ ‐ ‐ ‐ Latch Latch ‐25~+85 MSOP8
BD9104FVM 7 0.9 4.5~5.5 3.3 1 Current ‐ ‐ ‐ Latch Latch ‐25~+85 MSOP8
BU90002GWZ 7 1 4.0~5.5 3.3 6 On‐time ‐ ‐ ‐ Recove
ryRecove
ry‐40~+85 UCSP35L1
(1.3×0.9)
Recove Recove UCSP35L1BU90003GWZ 7 1 2.3~5.5 1.2 4 On‐time ‐ ‐ ‐ Recove
ryRecove
ry‐40~+85 UCSP35L1
(1.3×0.9)
BU90004GWZ 7 1 2.3~5.5 1.8 5.4 On‐time ‐ ‐ ‐ Recove
ryRecove
ry‐40~+85 UCSP35L1
(1.3×0.9)
BU90005GWZ 7 1 2.3~5.5 2.5 6 On‐time ‐ ‐ ‐ Recove
ryRecove
ry‐40~+85 UCSP35L1
(1.3×0.9)
BU90006GWZ 7 1 2.3~5.5 3.0 6 On‐time ‐ ‐ ‐ Recove Recove ‐40~+85 UCSP35L1
DC/DC Converters Selection Guide www.rohm.com2424
BU90006GWZ 7 1 2.3 5.5 3.0 6 On time ry ry
40 +85(1.3×0.9)
BU90007GWZ 7 1 2.3~5.5 1.25 4 On‐time ‐ ‐ ‐ Recove
ryRecove
ry‐40~+85 UCSP35L1
(1.3×0.9)
3.3V/5V Rail Input (Continued)
DC/DC Switching Regulators Buck Converters (Integrated FET Switch)DC/DC Switching Regulators Buck Converters (Integrated FET Switch)
wer Goo
d
ernally
chronizable
ustable Soft
rt chrono
ustifier
ht‐Load
ciency
er‐Current
tection
rmal Protection
Part No.
InputVoltageMaximumRating(V)
OutputCurrent(A)
InputVoltageRange(V)
Output Voltage(V)
SwitchingFrequency(MHz)
ControlMode
Features
DescriptionOperating
Temperature()
Package(mm)
Pow
Exte
Sync
Adju
Star
Sync
Rect
Ligh
Effic
Ove
Prot
The
NewBD9A100MUVBD9A101MUV‐LB
7 1 2.7~5.5 0.8~(VIN×0.7) 1 Current ‐ Recove
ryRecove
ry‐40~+85‐40~+125
VQFN016V3030
BD9B100MUV 7 1 2.7~5.5 0.8~(VIN×0.8) 1 / 2 On‐time ‐ Deep Recovery
Recovery
‐40~+85 VQFN016V3030
BD8964FVM 7 1.2 4.0~5.5 1.0~1.8 1 Current ‐ ‐ ‐ ‐ Latch Latch ‐25~+85 MSOP8BD8964FVM 7 1.2 4.0 5.5 1.0 1.8 1 Current Latch Latch 25 +85 MSOP8
BD9107FVM 7 1.2 4.0~5.5 1.0~1.8 1 Current ‐ ‐ ‐ Latch Latch ‐25~+85 MSOP8
BD9123MUV 7 1.2 2.7~5.5 0.85~1.2 1 Current ‐ ‐ Latch Latch Output voltage setting by 3‐bitparallel control
‐40~+95 VQFN016V3030
BU90023NUX 7 1.5 2.3~5.5 1.23 1 On‐time ‐ ‐ ‐ Recove
ryRecove
ry‐40~+85 VSON008X2030
ry ry
BU90028NUX 7 1.5 2.3~5.5 1.175 1 On‐time ‐ ‐ ‐ Recove
ryRecove
ry‐40~+85 VSON008X2030
BD8961NV 7 2 4.5~5.5 3.3 1 Current ‐ ‐ ‐ ‐ Latch Latch ‐25~+105 SON008V5060
BD9111NV 7 2 4.5~5.5 3.3 1 Current ‐ ‐ ‐ Latch Latch ‐25~+105 SON008V5060
BD9110NV 7 2 4.5~5.5 1.0~2.5 1 Current ‐ ‐ ‐ Latch Latch ‐25~+105 SON008V5060
BD89630EFJ 7 2 2.7~5.5 1.0~2.5 *1 1 Current ‐ ‐ ‐ ‐ Latch Latch ‐25~+85 HTSOP‐J8
BD8960NV 7 2 2.7~5.5 1.0~2.5 *1 1 Current ‐ ‐ ‐ ‐ Latch Latch ‐25~+105 SON008V5060
BD9130EFJ 7 2 2.7~5.5 1.0~2.5 *1 1 Current ‐ ‐ ‐ Latch Latch ‐25~+105 HTSOP‐J8
BD9130NV 7 2 2.7~5.5 1.0~2.5 *1 1 Current ‐ ‐ ‐ Latch Latch ‐25~+105 SON008V5060
BD91370MUV 7 2 2.7~5.5 0.8~3.3 *1 1 Current ‐ ‐ ‐ Recove
ryRecove
ry‐40~+105 VQFN020V4040
BD9B200MUV 7 2 2 7~5 5 0 8~(VIN×0 8) 1 / 2 On‐time ‐ Deep Recove Recove ‐40~+85 VQFN016V3030
DC/DC Converters Selection Guide www.rohm.com2525
BD9B200MUV 7 2 2.7~5.5 0.8~(VIN×0.8) 1 / 2 On‐time ‐ Deepry ry
‐40~+85 VQFN016V3030
Under Development *1 Restrictions depend on input/output voltage conditions.
Features
Power Goo
d
Externally
Synchron
izable
Adjustable Soft
Start
Synchron
ous
Rectifier
Light‐Load
Efficiency
Over‐Cu
rrent
Protectio
n
Thermal Protection
Package(mm)
SwitchingFrequency(MHz)
ControlMode
DescriptionOperating
Temperature()
Part No.
InputVoltageMaximumRating(V)
OutputCurrent(A)
InputVoltageRange(V)
Output Voltage(V)
BD8962MUV 7 3 2.7~5.5 0.8~2.5 *1 1 Current ‐ ‐ ‐ ‐ Latch Latch ‐40~+105 VQFN020V4040
BD9132MUV 7 3 2.7~5.5 0.8~3.3 *1 1 Current ‐ ‐ ‐ Latch Latch ‐40~+105 VQFN020V4040
BD8963EFJ 7 3 2.7~5.5 1.0~2.5 *1 1 Current ‐ ‐ ‐ ‐ Latch Latch ‐25~+85 HTSOP‐J8
BD9134MUV 7 3 4.5~5.5 3.3 1 Current ‐ ‐ ‐ Latch Latch ‐40~+105 VQFN020V4040
BD9139MUV 7 3 2.7~5.5 0.8~3.3 *1 1 Current ‐ ‐ ‐ Latch Latch ‐40~+105 VQFN016V3030
NewBD9A300MUVBD9A301MUV‐LB
7 3 2.7~5.5 0.8~(VIN×0.7) 1 Current ‐ Recove
ryRecove
ry‐40~+85‐40~+125
VQFN016V3030
New BD9B300MUV 7 3 2 7 5 5 0 8 (V 0 8) 1 / 2 O i D Recove Recove ‐40~+85 VQFN016V3030e
9 300 UBD9B301MUV‐LB
7 3 2.7~5.5 0.8~(VIN×0.8) 1 / 2 On‐time ‐ Deep eco ery
eco ery
0 85‐40~+125
VQFN016V3030
BD9137MUV 7 4 2.7~5.5 0.8~3.3 *1 1 Current ‐ ‐ ‐ Recove
ryRecove
ry‐40~+105 VQFN020V4040
BD91361MUV 7 4 2.7~5.5 0.8~3.3 *1 1 Current ‐ ‐ ‐ Latch Latch Output voltage setting by 2‐bitparallel control
‐40~+105 VQFN020V4040
New BD9A400MUV 7 4 2.7~5.5 0.8~(VIN×0.7) 1 Current ‐ Recove Recove ‐40~+85 VQFN016‐V3030( IN )
ry ry
UnderPlanning
BD9B400MUV 7 4 2.7~5.5 0.8~(VIN×0.8) 1 / 2 On‐time ‐ Deep Recovery
Recovery
‐40~+85 VQFN016V3030
BD91363AMUV 7 4.8 2.7~5.5 0.9~3.3 *1 1.5 Current ‐ ‐ ‐ Latch Latch Output voltage setting by 3‐bitparallel control
‐40~+105 VQFN020V4040
UnderPlanning
BD9B500MUV 7 5 2.7~5.5 0.8~(VIN×0.8) 1 / 2 On‐time ‐ Deep Recovery
Recovery
‐40~+85 VQFN016V3030g y y
New BD9A600MUV 7 6 2.7~5.5 0.8~(VIN×0.7) 1 Current ‐ Recove
ryRecove
ry‐40~+85 VQFN016‐V3030
BD9B600MUV 7 6 2.7~5.5 0.8~(VIN×0.8) 1 / 2 On‐time ‐ Deep Recovery
Recovery
‐40~+85 VQFN016V3030
Under Development *1 Restrictions depend on input/output voltage conditions.
DC/DC Converters Selection Guide www.rohm.com2626
12V Rail Input
DC/DC Switching Regulators Buck Converters (Integrated FET Switch)DC/DC Switching Regulators Buck Converters (Integrated FET Switch)
Features
Power Goo
d
Externally
Synchron
izable
Adjustable Soft
Start
Synchron
ous
Rectifier
Light‐Load
Efficiency
Over‐Cu
rrent
Protectio
n
Thermal Protection
Over‐Vo
ltage
Protectio
n
Part No.
InputVoltageMaximumRating(V)
OutputCurrent(A)
InputVoltageRange(V)
Output Voltage(V)
SwitchingFrequency(MHz)
ControlMode
Features
DescriptionOperating
Temperature()
Package
A T
BD8312HFN 15 1 3.5~14 1.2~12 1.5 Current ‐ ‐ ‐ ‐ ‐ Recovery
‐ 100% Duty ‐25~+85 HSON8
BD8313HFN 15 1.2 3.5~14 1.2~12 1 Current ‐ ‐ ‐ ‐ ‐ Recovery
‐ 100% Duty ‐40~+85 HSON8
BD1482EFJ 20 2 4.2~18 0.923~(VIN×0.7) 0.38 Current ‐ ‐ ‐ Recovery
Recovery
‐ ‐40~+85 HTSOP‐J8
Recove RecoveNew BD9328EFJ‐LB 20 2 4.2~18 0.9~(VIN×0.7) 0.38 Current ‐ ‐ ‐ Recovery
Recovery
‐ Matrix pin short protection ‐40~+85 HTSOP‐J8
BD9141MUV 15 2 4.5~13.2 2.5~6.0 *1 0.5 Current ‐ ‐ ‐ Latch Latch ‐ ‐40~+105 VQFN020V4040
BD95821MUV 15.2 2 7.5~150.8~(VIN×0.5)(VIN×0.5)≦5.5V
0.5~0.8 H3Reg ‐ ‐ ‐ Latch Recovery
‐20~+100 VQFN020V4040
BD9325FJ 20 2 4.75~18 0.9~(VIN×0.8) 0.38 Current ‐ ‐ ‐ ‐ Recove Recove ‐ ‐40~+85 SOP‐J8New BD9325FJ‐LB
0 4.75 8 0.9 (VIN 0.8) 0.38 Current ry ry
40 85 SOP J8
BD93290EFJ 20 3 4.2~18 0.9~(VIN×0.7) 0.3 Current ‐ ‐ ‐ Recovery
Recovery
‐ Matrix pin short protection ‐40~+85 HTSOP‐J8
BD1484EFJ 20 3 4.2~18 0.925~(VIN×0.7) 0.38 Current ‐ ‐ ‐ Recovery
Recovery
‐ ‐40~+85 HTSOP‐J8
New BD9329AEFJ‐LB 20 3 4.2~18 0.9~(VIN×0.7) 0.38 Current ‐ ‐ ‐ Recovery
Recovery
‐ Matrix pin short protection ‐40~+85 HTSOP‐J8
NewBD9C301FJBD9C301FJ‐LB
20 3 4.5~18(VIN×0.125)~(VIN×0.7)(VIN×0.125)≧ 0.8
0.5 Current ‐ ‐ ‐ ‐ Latch Recovery
‐ ‐40~+85‐40~+125
SOP‐J8
BD95831MUV 15.2 3 7.5~150.8~(VIN×0.5)(VIN×0.5)≦5.5V
0.5~0.8 H3Reg ‐ ‐ ‐ Latch Recovery
‐20~+100 VQFN016V3030
BD95835EFJ 20 3 4.5~18 0.9~(VIN×0.6) 0.2~0.8 On‐time ‐ ‐ ‐ Recovery
Recovery
‐40~+85 HTSOP‐J8
0 765~7 0 Recove RecoveBD9D320EFJ 20 3 4.5~180.765 7.0
(VIN×0.07)~(VIN×0.65)0.7 On‐time ‐ ‐ ‐ Recove
ryRecove
ry‐ ‐40~+85 HTSOP‐J8
BD9D321EFJ 20 3 4.5~180.765~7.0
(VIN×0.07)~(VIN×0.65)0.7 On‐time ‐ ‐
Recovery
Recovery
‐ ‐40~+85 HTSOP‐J8
BD9859EFJ 15 3 5.0~14 1.0~(VIN×0.7) 0.75 Current ‐ ‐ ‐ ‐ ‐ Recovery
Recovery
‐ ‐40~+85 HTSOP‐J8
NBD9326EFJBD9326EFJ LB
20 3 4.75~18 0.9~(VIN×0.8) 0.38 Current ‐ ‐ ‐ ‐ Recove Recove ‐ ‐40~+85 HTSOP‐J8
DC/DC Converters Selection Guide www.rohm.com2727
New BD9326EFJ‐LB( )
ry ry
*1 Restrictions depend on input/output voltage conditions.
nInputFeatures
Power Goo
d
Externally
Synchron
izable
Adjustable Soft
Start
Synchron
ous
Rectifier
Light‐Load
Efficiency
Over‐Cu
rrent
Protectio
n
Thermal Protection
Over‐Vo
ltage
Protectio
n
BD9C401EFJ 20 4 4 5~18(VIN×0.125)~(VIN×0.7) 0 5 Current Latch Recove 40~+85 HTSOP J8
Part No.
InputVoltageMaximumRating(V)
OutputCurrent(A)
InputVoltageRange(V)
Output Voltage(V)
SwitchingFrequency(MHz)
ControlMode
DescriptionOperating
Temperature()
Package
BD9C401EFJ 20 4 4.5~18(VIN×0.125)≧ 0.8
0.5 Current ‐ ‐ ‐ ‐ Latchry
‐ ‐40~+85 HTSOP‐J8
BD95841MUV 15.2 4 7.5~150.8~(VIN×0.5)(VIN×0.5)≦5.5V
0.5~0.8 H3Reg ‐ ‐ ‐ Latch Recovery
‐20~+100 VQFN016V3030
NewBD9327EFJBD9327EFJ‐LB
20 4 4.75~18 0.9~(VIN×0.8) 0.38 Current ‐ ‐ ‐ ‐ Recovery
Recovery
‐ ‐40~+85 HTSOP‐J8
BD9C501EFJ 20 5 4.5~18(VIN×0.075)~(VIN×0.7)(VIN×0.075)≧ 0.8
0.5 Current ‐ ‐ ‐ ‐ Latch Recovery
‐ ‐40~+85 HTSOP‐J8( ) y
BD95861MUV 20 6 7.5~180.8~(VIN×0.5)(VIN×0.5)≦5.5V
0.5~0.8 H3Reg ‐ ‐ ‐ Latch Recovery
‐20~+100 VQFN024V4040
BD9C601EFJ 20 6 4.5~18(VIN×0.075)~(VIN×0.7)(VIN×0.075)≧ 0.8
0.5 Current ‐ ‐ ‐ ‐ Latch Recovery
‐ ‐40~+85 HTSOP‐J8
BD95500MUV 24 6 3.0~20 0.7~5.0 0.2~1.0 H3Reg ‐ Latch Recovery
Output Discharge ‐10~+100 VQFN040V6060
24V Rail Input
on
InputInput
Features
Power Goo
d
Externally
Synchron
izable
Adjustable Soft
Start
Synchron
ous
Rectifier
Light‐Load
Efficiency
Over‐Cu
rrent
Protectio
n
Thermal Protecti o
Over‐Vo
ltage
Protectio
n
BD9G101G 45 0.5 6.0~42(VIN×0.15)~(VIN×0.7)(VIN×0 15)≧ 1 0
1.5 Current ‐ ‐ ‐ ‐ ‐ Recovery
Recovery
‐ ‐40~+105 SSOP6
SwitchingFrequency(MHz)
Part No.VoltageMaximumRating(V)
OutputCurrent(A)
InputVoltageRange(V)
Output Voltage(V)
ControlMode
DescriptionOperating
Temperature()
Package
(VIN×0.15)≧ 1.0 ry ry
BD9E100FJ‐LB 40 1 7.0~36(VIN×0.15)~(VIN×0.7)(VIN×0.15)≧ 1.0
1 Current ‐ ‐ ‐ ‐ Recovery
Recovery
‐40~+150 SOP‐J8
BD9E101FJ‐LB 40 1 7.0~36(VIN×0.0855)~(VIN×0.7)(VIN×0.0855)≧ 1.0
0.57 Current ‐ ‐ ‐ ‐ Recovery
Recovery
‐40~+150 SOP‐J8
BD9E102FJ 30 1 7.0~26(VIN×0.143)~(VIN×0.7)(VIN×0.143)≧ 1.0
0.57 Current ‐ ‐ ‐ Recove
ryRecove
ry ‐40~+85 SOP‐J8
(VIN 0 06) (VIN 0 7) R R
DC/DC Converters Selection Guide www.rohm.com2828
BD9E151NUX 30 1.2 6.0~28 (VIN×0.06)~(VIN×0.7)(VIN×0.06)≧ 1.0
0.6 Current ‐ ‐ ‐ ‐ Recovery
Recovery
‐40~+85 VSON008X2030
DC/DC Switching Regulators Buck Converters (Integrated FET Switch)DC/DC Switching Regulators Buck Converters (Integrated FET Switch)
24V Rail Input (Continued)
er Goo
d
rnally
chronizable
ustable Soft
t chrono
usifier
t‐Load
iency
r‐Cu
rrent
ectio
n
mal Protection
r‐Vo
ltage
ectio
n
Part No.
InputVoltageMaximumRating(V)
OutputCurrent(A)
InputVoltageRange(V)
Output Voltage(V)
SwitchingFrequency(MHz)
PackageControlMode
Features
DescriptionOperating
Temperature()
Pow
Exter
Sync
Adju
Start
Sync
Recti
Light
Effici
Over
Prote
Ther
Over
Prote
BD9701CP‐V5 36 1.5 8.0~35 1.0~(VIN‐3.0) 0.1 Voltage ‐ ‐ ‐ ‐ ‐ Recovery
Recovery
‐ 100% Duty ‐40~+85 TO220CP‐V5
BD9701FP 36 1.5 8.0~35 1.0~(VIN‐3.0) 0.1 Voltage ‐ ‐ ‐ ‐ ‐ Recovery
Recovery
‐ 100% Duty ‐40~+85 TO252‐5
BD9703CP‐V5 36 1.5 8.0~35 1.0~(VIN‐3.0) 0.3 Voltage ‐ ‐ ‐ ‐ ‐ Recove Recove ‐ 100% Duty ‐40~+85 TO220CP‐V5
( )
( ) gry ry
y
BD9703FP 36 1.5 8.0~35 1.0~(VIN‐3.0) 0.3 Voltage ‐ ‐ ‐ ‐ ‐ Recovery
Recovery
‐ 100% Duty ‐40~+85 TO252‐5
BD9870FPS 36 1.5 8.0~35 1.0~(0.8×(VIN‐IO×RON) 0.9 Voltage ‐ ‐ ‐ ‐ ‐ Recovery
Recovery
‐ 100% Duty ‐40~+85 TO252S‐5
BD9873CP‐V5 36 1.5 8.0~35 1.0~(0.8×(VIN‐IO×RON) 0.11 Voltage ‐ ‐ ‐ ‐ ‐ Recovery
Recovery
‐ 100% Duty ‐40~+85 TO220CP‐V5
BD9E300EFJ‐LB 40 2.5 7.0~36(VIN×0.15)~(VIN×0.7)(VIN×0.15)≧ 1.0
1 Current ‐ ‐ ‐ ‐ Recovery
Recovery
‐40~+150 HTSOP‐J8
BD9E301EFJ‐LB 40 2.5 7.0~36(VIN×0.0855)~(VIN×0.7)(VIN×0.0855)≧ 1.0
0.57 Current ‐ ‐ ‐ ‐ Recovery
Recovery
‐40~+150 HTSOP‐J8
UnderPlanning
BD9E302EFJ 30 3 7.0~26(VIN×0.143)~(VIN×0.7)(VIN×0.143)≧ 1.0
0.57 Current ‐ ‐ ‐ Recove
ryRecove
ry ‐40~+85 HTSOP‐J8
BD9E303EFJ LB 40 3 7 0~36(VIN×0.06)~(VIN×0.8) 0 3 Current
Recove Recove 40~+150 HTSOP J8 BD9E303EFJ‐LB 40 3 7.0~36
(VIN×0.06)≧ 1.00.3 Current ‐ ‐ ‐ ‐
ry ry ‐40~+150 HTSOP‐J8
BD9702CP‐V5 36 3 8.0~35 1.0~(VIN‐3.0) 0.11 Voltage ‐ ‐ ‐ ‐ ‐ Recovery
Recovery
‐ ‐40~+85 TO220CP‐V5
BD9874CP‐V5 36 3 8.0~35 1.0~(0.8×(VIN‐IO×RON) 0.11 Voltage ‐ ‐ ‐ ‐ ‐ Recovery
Recovery
‐ ‐40~+85 TO220CP‐V5
BD95513MUV 30 3 4.5~28 0.7~5.0 0.2~1.0 H3Reg ‐ Latch Recovery
Output Discharge ‐10~+100 VQFN032V5050
BD95514MUV 30 4 4.5~28 0.7~5.0 0.2~1.0 H3Reg ‐ Latch Recovery
Output Discharge ‐10~+100 VQFN032V5050
Under Development
DC/DC Converters Selection Guide www.rohm.com2929
Dual‐Output
er Goo
d
rnally
hron
izable
stable Soft
hron
ous
fier
‐Load
ency
‐Current
ectio
n
mal Protection
‐Voltage
ectio
n
PackagePart No.Number
ofChannels
InputVoltageMaximumRating(V)
OutputCurrent(A)
InputVoltageRange(V)
Output Voltage(V)
SwitchingFrequency(MHz)
ControlMode
Features
DescriptionOperating
Temperature()
Powe
Exter
Synch
Adjus
Start
Synch
Rectif
Light‐
Efficie
Over‐
Prote
Therm
Over‐
Prote
BD91501MUV 2 7 Io1 : 0.4Io2 : 0.3
2.55~5.5 Vo1 : 2.55Vo2 : 1.80
1.65 Current ‐ ‐ ‐ Latch Recovery
‐ 100% Duty ‐30~+105 VQFN016V3030
BD9151MUV 2 7 Io1 : 0.4Io2 : 0.8
2.8~5.5 Vo1 : 1.8Vo2 : 1.2
1 Current ‐ ‐ ‐ Latch Recovery
‐ Voltage Detector,High‐side gate controller
‐40~+85 VQFN020V4040
BD9150MUV 2 7 Io1 : 1.5I 2 1 5
4.75~5.5 Vo1 : 3.3V 2 0 8 2 5
1.5 Current ‐ ‐ ‐ Latch Recove ‐ ‐40~+85 VQFN020V4040
(V)
Io2 : 1.5 Vo2 : 0.8~2.5 ryQ
BD9152MUV 2 7 Io1 : 1.5Io2 : 1.5
4.5~5.5 Vo1 : 3.3Vo2 : 0.8~2.5
1 Current ‐ ‐ ‐ Latch Recovery
‐ ‐40~+85 VQFN020V4040
BD9153MUV 2 7 Io1 : 1.5Io2 : 1.5
4.5~5.5 Vo1 : 1.8~3.3Vo2 : 0.8~2.5
1 Voltage ‐ ‐ ‐ Latch Recovery
‐ LDO Controller,Voltage Detector
‐40~+85 VQFN024V4040
BD93291EFJ 2 30 Io1 : 2.5Io2 : 1.5
8.0~26 Vo1 : 5.0Vo2 : 0.8~4.0
1.5~2.5 H3Reg ‐ ‐ ‐ Recove
ryRecove
ry‐ ‐40~+85 HTSOP‐J8
BD91362MUV 2 7 Io1 : 3.0Io2 : 1.0
2.7~5.5 Vo1 : 1.0~3.3Vo2 : 1.0~3.3
1 Current ‐ ‐ ‐ Latch Recovery
‐ 8 bit Voltage setting by I2C I/F ‐40~+105 VQFN024V4040
BD95830MUV 2 15.1 Io1 : 3.0Io2 : 3.0
7.5~15 Vo1 : 0.8~5.5Vo2 : 0.8~5.5
0.4~0.8 H3Reg ‐ ‐ ‐ ‐ Latch Recovery
Latch ‐20~+100 VQFN032V5050
DC/DC Converters Selection Guide www.rohm.com3030
Boost / Buck‐Boost / SEPIC and Inverting Converters
DC/DC Switching Regulators Boost / Buck‐Boost / SEPIC and Inverting Converters DC/DC Switching Regulators Boost / Buck‐Boost / SEPIC and Inverting Converters
Boost
ng rono
user Load
ncy
art
hrou
gh
Current
tion
al Protection
ControlMode
Features
Package(mm)
Part No.Number
ofChannels
SwitchCurrentLimit(mA)
InputVoltage(V)
OutputVoltage(V)
SwitchingFrequency
(kHz)
Boost
Buck‐B
SEPIC
Inverti
Synch r
Rectifie
Light‐L
Efficien
Soft St
Inpu
tPass t h
UVLO
Over‐C
Protect
Therma
BU33DV5G 1 10 1.75~4.5 3.3 100 Current ‐ ‐ ‐ ‐ ‐ ‐ Recove
ry SSOP5
BD1603NUV 1 175 / 190 2.7~5.5 4.5 / 5.0 642 / 238 Chargepump ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ Recovery
VSON010V3030
(mA)
y
BU33DV7NUX 1 300 1.8~5.5 3.3 600 Current ‐ ‐ ‐ Recove
ry VSON010V3030
BU34DV7NUX 1 300 1.8~5.5 3.4 600 Current ‐ ‐ ‐ Recove
ry VSON010V3030
BD8152FVM 1 1400 2.5~5.5 VIN~14 600 / 1200 Current ‐ ‐ ‐ Adj. ‐ Recove
ry MSOP8
ry
BD8158FVM 1 1400 2.1~4.0 VIN~14 600 / 1200 Current ‐ ‐ ‐ Adj. ‐ Recove
ry MSOP8
BD8306MUV 1 2000 1.8~5.5 1.8~5.2 300~2000 Voltage ‐ ‐ ‐ ‐ Latch VQFN016V3030
BD8314NUV 1 2500 3.0~12 4.0~12 1200 Voltage ‐ ‐ ‐ ‐ ‐ ‐ Latch VSON010V3030
BD8311NUV 1 2500 3.5~11 4.0~11 1200 Voltage ‐ ‐ ‐ ‐ ‐ ‐ Latch VSON010V3030
BD8316GWL 2 200 2.5~5.5Vo1 : ‐9.0~‐1.0Vo2 : VIN ~ 18
1600 Current ‐ ‐ ‐ ‐ ‐ Latch UCSP50L1(1.8×1.5)
DC/DC Converters Selection Guide www.rohm.com3131
Buck Controllers
DC/DC Switching Regulators Controllers (External Switch)DC/DC Switching Regulators Controllers (External Switch)
Features
Power Goo
d
Externally
Synchron
izable
Adjustable Soft
Start
Synchron
ous
Rectifier
Light‐Load
Efficiency
Over‐Cu
rrent
Protectio
n
Thermal Protection
Over‐Vo
ltage
Protectio
n
Recove Recove
OperatingTemperature
()PackagePart No.
Numberof
Channels
InputVoltageMaximumRating(V)
InputVoltageRange(V)
SupplyVoltage(V)
Output Voltage(V)
SwitchingFrequency(MHz)
ControlMode
Description
BD95601MUV‐LB 1 28 4.5~25 4.5~5.5 0.75~2.0 0.2~0.5 H3Reg ‐ Latch Recovery
Recovery
Tracking feature ‐10~+85 VQFN020V4040
BD9611MUV 1 60 10~56 ‐ 1.0~(VIN×0.8) 0.05~0.5 Voltage ‐ ‐ Recovery
Recovery
‐ Pre Bias,Adjustable UVLO
‐40~+105 VQFN020V4040
BD63536FJ 1 32 3.0~30 ‐ 1.25~VIN *1 0.01~0.3 Voltage ‐ ‐ ‐ ‐ ‐ Recovery
Recovery
Recovery
‐25~+85 SOP‐J8
BD9845FV 1 36 3.6~35 ‐ 1.0~VIN *1 0.1~1.5 Voltage ‐ ‐ ‐ ‐ Recovery
Recovery
‐ ‐40~+85 SSOP‐B14
B t / B k B t C t ll
ry ry
BD95602MUV‐LB 2 30 5.5~28 ‐ 1.0~5.5 0.15~0.5 H3Reg ‐ Latch Recovery
Recovery
Output discharge,3.3V LDO, 5V LDO
‐20~+85 VQFN032V5050
BD9848FV 2 36 3.6~35 ‐ 1.0~VIN *1 0.1~1.5 Voltage ‐ ‐ ‐ ‐ Recovery
Recovery
‐ ‐40~+105 SSOP‐B20
*1 Restrictions depend on input/output voltage conditions.
Boost / Buck‐Boost Controllers
ost le t nous
cuit
n n
Package(mm)
Part No.Number
ofChannels
InputVoltageMaximumRating
InputVoltage(V)
OutputVoltage(V)
SwitchingFrequency
(kHz)
ControlMode
Features
Boost
Buck‐Boo
Inverting
Buck
Enable
Adjustab
Soft Start
Synchron
Rectifier
Short C
ir cProtectio
Thermal
Protectio
BD8303MUV 1 15 2.7~14 1.8~12 200~1000 Voltage ‐ ‐ ‐ ‐ Latch Recovery
VQFN016V3030
BD9306AFVM 1 20 4.2~18 VIN~(VIN/0.3) 100~800 Voltage ‐ ‐ ‐ ‐ ‐ Latch Recovery
MSOP8
Channels Rating(V)
(V) (V) (kHz)
y
BD9851EFV 2 20 4.0~18 1.0~*1 10~3000 Voltage ‐ ‐ ‐ Latch Recovery
HTSSOP‐B20
BA9743AFV 2 36 3.6~35 2.505~*1 10~800 Voltage ‐ ‐ ‐ Latch Recovery
SSOP‐B16
BA9744FV 2 36 2.5~35 1.222~*1 10~800 Voltage ‐ ‐ ‐ Latch Recovery
SSOP‐B16
R
DC/DC Converters Selection Guide www.rohm.com3232
BA9741F 2 36 3.6~35 2.5~*1 10~800 Voltage ‐ ‐ ‐ Latch Recovery
SOP16
BA9741FS 2 36 3.6~35 2.5~*1 10~800 Voltage ‐ ‐ ‐ Latch Recovery
SSOP‐A16
*1 Restrictions depend on input/output voltage conditions.
30V VDSS Dual Type 30V VDSS Single Type
Power MOSFETsPower MOSFETs
VGS=4.5V VGS=10V
RF4E110GN N 30 11 11.7 8.7 4.8 4.5
RF4E080GN N 30 8 17 6 13 5 2 8 4 5
Package(mm)
PD(W)
Part No.Polarity(ch)
VDSS (V)
HUML2020L82.0×2.0 t=0.6
2 0
ID(A)
RDS(ON) typ (mΩ) Qg(nC)VGS=4.5V
Drive Voltage(V)
VGS=4.5V VGS=10V
30 11 11.9 9.1 3.3
30 10 14.7 11.2 2.7
HSOP8
RDS(ON) typ (mΩ) Qg(nC)VGS=4.5V
Drive Voltage(V)
New
HUML3030L103.0×3.0 t=0.6 2.0 HS8K1 N+N 4.5
Package(mm)
PD(W)
Part No.Polarity(ch)
VDSS (V)ID(A)
RF4E080GN N 30 8 17.6 13.5 2.8 4.5
RF4E070GN N 30 7 23.0 16.4 2.3 4.5
RQ3E180GN N 30 18 4.3 3.3 12 4.5
RQ3E150GN N 30 15 6.2 4.7 7 4.5
HSMT83.3×3.3 t=0.8
2.030 20 4.7 3.6 7.8
30 12 9.1 6.7 4.8
30 24 3.3 2.6 11.2
30 12 9.1 6.7 4.8
30 32 2.4 1.9 16.9 HS8K24 N+N 4 5
New
HSOP86.0×5.0 t=1.0
2.0
HS8K22 N+N 4.5
HS8K23 N+N 4.5
RQ3E120GN N 30 12 9.1 6.7 4.8 4.5
RQ3E100GN N 30 10 12.0 8.9 3.9 4.5
RQ3E080GN N 30 8 17.5 12.9 2.8 4.5
RS1E350GN N 30 35 1 5 1 2 29 4 5HSOP8
2.030 12 9.1 6.7 4.8
30 32 2.3 2.0 47.0
30 12 9.1 6.7 4.8
Under Development
HS8K24 N+N 4.5
New HS8S36N
N+SBD4.5
RS1E350GN N 30 35 1.5 1.2 29 4.5
RS1E320GN N 30 32 1.8 1.4 20 4.5
RS1E300GN N 30 30 2.2 1.7 19 4.5
RS1E280GN N 30 28 2.6 2.0 17 4.5
6.0×5.0 t=1.0
RS1E240GN N 30 24 3.3 2.6 11 4.5
RS1E200GN N 30 20 4.7 3.6 8 4.5
RS1E170GN N 30 17 6.7 5.1 6 4.5
RS1E150GN N 30 15 8.8 6.7 5 4.5
3.0
RS1E150GN N 30 15 8.8 6.7 5 4.5
RS1E130GN N 30 13 11.7 8.9 4 4.5
DC/DC Converters Selection Guide www.rohm.com3333
Isolated Flyback Converters
Isolated DC/DC Power SuppliesIsolated DC/DC Power Supplies
e Start
Load
ency
O Current
ction
mal ction
Part No.OutputPower(W)
Max. Input Voltage(V)
SwitchCurrentLimit(A)
Input Voltage Range(V)
Switching Frequency
(kHz)
ControlMode
FeaturesOperatingJunction
TemperatureRange()
Package
Enabl
Soft S
Light‐
Effici e
UVLO
Over‐
Prote
Therm
Prote
BD7F100HFN‐LB1W at VIN 5.0V5W at VIN 24V
45 1.25 3.0 to 40 400 Adaptiveon‐time
Feedback
Feedback
‐40 to +125 HSON8
Planned BD7F200HFN‐LB2W at VIN 5.0V10W at VIN 24V
45 1.75 3.0 to 40 400 Adaptiveon‐time
Feedback
Feedback
‐40 to +125 HSON8
()
IN
Planned BD7J100HFN‐LB 5W at VIN 48V 100 1.0 6.0 to 80 400 Adaptiveon‐time
Feedback
Feedback
‐40 to +125 HSON8
Under Development
DC/DC Converters Selection Guide www.rohm.com3434
Low Dropout (LDO) Regulators
Linear Regulators Low Dropout (LDO) RegulatorsLinear Regulators Low Dropout (LDO) Regulators
Maximum 7V 10V 15V 30V
2.3V~5.5V2.4V~5.5V
00は2.3V~5.5V(Vo+3)V~25V (Vo+1)V~26.5V
0.5A( A5 )
1.0A( C0 )
0.3A( A3 )
0.5A( A5 )
1.0A( C0 )
1.5A( C5 )
0.3A( A3 )
0.5A( A5 )
1.0A( C0 )
0.1A( A1 )
1.0A( C0 )
Adjustable( 00 )
BD00IA5WEFJ‐
BD00IC0WEFJBD00IC0WHFV
BD00HA3WEFJ‐
BD00HA5WEFJ‐
BD00HC0WEFJ‐
BD00HC5WEFJ‐
BD00GA3WEFJ‐
BD00GA5WEFJ‐
BD00GC0WEFJ‐
BD00FA1WEFJ‐
BD00FC0WEFJ‐
HTSOP‐J8HVSOF6
MaximumRating
7V( I )
10V( H )
15V( G )
30V( F )
PackageInput VoltageRange
4.5V~8.0V 4.5V~14.0V
OutputCurrent
( 00 )‐ ‐ ‐ ‐ ‐ ‐ BD00GA3WNUX ‐ ‐ ‐ ‐ VSON008X2030
1.0V( 10 )
BD10IA5WEFJ‐
BD10IC0WEFJBD10IC0WHFV
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
HTSOP‐J8HVSOF6
1.2V( 12 )
BD12IA5WEFJ‐
BD12IC0WEFJBD12IC0WHFV
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
HTSOP‐J8HVSOF6
1.25V( 1C )
‐ BD1CIC0WHFV‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
HVSOF6
BD15IA5WEFJ BD15IC0WEFJ BD15HA3WEFJ BD15HA5WEFJ BD15HC0WEFJ BD15HC5WEFJ BD15GA3WEFJ BD15GA5WEFJ BD15GC0WEFJ HTSOP J81.5V( 15 )
BD15IA5WEFJ‐‐
BD15IC0WEFJBD15IC0WHFV‐
BD15HA3WEFJ‐‐
BD15HA5WEFJ‐‐
BD15HC0WEFJ‐‐
BD15HC5WEFJ‐‐
BD15GA3WEFJ‐BD15GA3WNUX
BD15GA5WEFJ‐‐
BD15GC0WEFJ‐‐
‐‐‐
‐‐‐
HTSOP‐J8HVSOF6VSON008X2030
1.8V( 18 )
BD18IA5WEFJ‐‐
BD18IC0WEFJBD18IC0WHFV‐
BD18HA3WEFJ‐‐
BD18HA5WEFJ‐‐
BD18HC0WEFJ‐‐
BD18HC5WEFJ‐‐
BD18GA3WEFJ‐BD18GA3WNUX
BD18GA5WEFJ‐‐
BD18GC0WEFJ‐‐
‐‐‐
‐‐‐
HTSOP‐J8HVSOF6VSON008X2030
2.5V( 25 )
BD25IA5WEFJ‐
BD25IC0WEFJBD25IC0WHFV
BD25HA3WEFJ‐
BD25HA5WEFJ‐
BD25HC0WEFJ‐
BD25HC5WEFJ‐
BD25GA3WEFJ‐
BD25GA5WEFJ‐
BD25GC0WEFJ‐
‐‐
‐‐
HTSOP‐J8HVSOF6
( 25 )‐ ‐ ‐ ‐ ‐ ‐ BD25GA3WNUX ‐ ‐ ‐ ‐ VSON008X2030
2.6V( 26 )
‐ BD26IC0WHFV‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
HVSOF6
3.0V( 30 )
BD30IA5WEFJ‐‐
BD30IC0WEFJBD30IC0WHFV‐
BD30HA3WEFJ‐‐
BD30HA5WEFJ‐‐
BD30HC0WEFJ‐‐
BD30HC5WEFJ‐‐
BD30GA3WEFJ‐BD30GA3WNUX
BD30GA5WEFJ‐‐
BD30GC0WEFJ‐‐
‐‐‐
BD30FC0WEFJ‐‐
HTSOP‐J8HVSOF6VSON008X2030
3 3VBD33IA5WEFJ BD33IC0WEFJ
BD33IC0WHFVBD33HA3WEFJ BD33HA5WEFJ BD33HC0WEFJ BD33HC5WEFJ BD33GA3WEFJ BD33GA5WEFJ BD33GC0WEFJ ‐ BD33FC0WEFJ HTSOP‐J8
HVSOF6Outpu
t Voltage
3.3V( 33 )
‐‐‐
BD33IC0WHFV‐‐
‐‐‐
‐‐‐
‐‐‐
‐‐‐
‐BD33GA3WNUX‐
‐‐‐
‐‐‐
‐‐BD33FA1FP3
‐‐‐
HVSOF6VSON008X2030SOT89‐3
5.0V( 50 )
‐‐
‐‐
BD50HA3WEFJ‐
BD50HA5WEFJ BD50HC0WEFJ BD50HC5WEFJ BD50GA3WEFJBD50GA3WNUX
BD50GA5WEFJ‐
BD50GC0WEFJ‐
‐‐
BD50FC0WEFJ‐
HTSOP‐J8VSON008X2030
5.4V( 54 )
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
BD54FA1FP3‐‐
SOT89‐3
6.0V ‐ ‐ BD60HA3WEFJ BD60HA5WEFJ BD60HC0WEFJ BD60HC5WEFJ BD60GA3WEFJ BD60GA5WEFJ BD60GC0WEFJ ‐ BD60FC0WEFJ HTSOP‐J8
O
( 60 ) ‐ ‐ BD60GA3WNUX ‐ ‐ ‐ ‐ VSON008X20307.0V( 70 )
‐‐
‐‐
BD70HA3WEFJ BD70HA5WEFJ BD70HC0WEFJ BD70HC5WEFJ BD70GA3WEFJBD70GA3WNUX
BD70GA5WEFJ‐
BD70GC0WEFJ‐
‐‐
BD70FC0WEFJ‐
HTSOP‐J8VSON008X2030
8.0V( 80 )
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
BD80GA3WEFJBD80GA3WNUX
BD80GA5WEFJ‐
BD80GC0WEFJ‐
‐‐
BD80FC0WEFJ‐
HTSOP‐J8VSON008X2030
9.0V( 90 )
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
BD90GA3WEFJBD90GA3WNUX
BD90GA5WEFJ‐
BD90GC0WEFJ‐
‐‐
BD90FC0WEFJ‐
HTSOP‐J8VSON008X2030
10 0V BDJ0GA3WEFJ BDJ0GA5WEFJ BDJ0GC0WEFJ BDJ0FC0WEFJ HTSOP J8
DC/DC Converters Selection Guide www.rohm.com3535
10.0V( J0 )
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
BDJ0GA3WEFJBDJ0GA3WNUX
BDJ0GA5WEFJ‐
BDJ0GC0WEFJ‐
‐‐
BDJ0FC0WEFJ‐
HTSOP‐J8VSON008X2030
12.0V( J2 )
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
BDJ2GA3WEFJBDJ2GA3WNUX
BDJ2GA5WEFJ‐
BDJ2GC0WEFJ‐
‐‐
BDJ2FC0WEFJ‐
HTSOP‐J8VSON008X2030
15.0V( J5 )
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
‐‐
BDJ5FC0WEFJ‐
HTSOP‐J8
CMOS Low Dropout (LDO) Regulators
TypeInput
Voltage(V)
OutputCurrent(mA)
OutputVoltage(V)
Part No.OutputVoltagePrecision
I/O DropoutVoltage(mV)
RippleRejection
(dB)
LoadRegulation
(mV)
CircuitCurrent(μA)
OutputShortCurrent(mA)
InputCapacitor
(μF)
OutputCapacitor
(μF)
ShutdownSwitch
OverCurrent
Protection
ThermalProtection
DischargeFunction
Package
1.00 BU10UA3WNVX
1.05 BU1AUA3WNVX
1.10 BU11UA3WNVX470
( )1.10 BU11UA3WNVX
1.15 BU1BUA3WNVX
1.20 BU12UA3WNVX
1.25 BU1CUA3WNVX
1.30 BU13UA3WNVX
1.50 BU15UA3WNVX
1 80 BU18UA3WNVX
350(Io=300mA)
±25mV
(Io=300mA)
1.80 BU18UA3WNVX
1.85 BU1JUA3WNVX
1.90 BU19UA3WNVX
2.00 BU20UA3WNVX
2.05 BU2AUA3WNVX
2.10 BU21UA3WNVX
2 20 BU22UA3WNVX
250(Io=300mA)
25BU UA3WNVX
±25mV
2.20 BU22UA3WNVX
2.30 BU23UA3WNVX
2.50 BU25UA3WNVX
2.60 BU26UA3WNVX
2.70 BU27UA3WNVX
2.75 BU2HUA3WNVX
2 80 BU28UA3WNVX
SSON004X1010220(Io=300mA)
(Io=0.01mAto 300mA)
50 150 1 1 70BUxxUA3WNVX
Series1.7~5.5 300
2.80 BU28UA3WNVX
2.85 BU2JUA3WNVX
2.90 BU29UA3WNVX
2.95 BU2KUA3WNVX
3.00 BU30UA3WNVX
3.10 BU31UA3WNVX
200(Io=300mA)
±1%
3.20 BU32UA3WNVX
3.30 BU33UA3WNVX
3.40 BU34UA3WNVX
3.70 BU37UA3WNVX
DC/DC Converters Selection Guide www.rohm.com3636
DDR Termination Regulators
Linear Regulators for DDR SDRAMLinear Regulators for DDR SDRAM
F
R1 ( 2.5V
/2.6V)
R2 (1
.8V)
R2L (1.5V
)
DR2 (1.2V)
R3 (1
.5V)
R3L (1.35
V)
R3U (1
.25V
)
DR3 (1.2V)
R4 (1
.2V)
VTTVoltagePrecision(mV)
Part No.
VCCInput
Voltage(V)
VTT_INTermination
InputVoltage(V)
VDDQReference
InputVoltage(V)
VTTOutputVoltage(V)
VTTOutputCurrent(A)
VREFOutputCurrent(mA)
Features
OperatingTemperature
()Package
ble
t Start
wer Goo
d
LO put C
eram
icacito
rsrm
altection
DDR (VDDQ)
DDR
DDR
DDR
LPDD
DDR
DDR
DDR
LPDD
DDR
BD3533FBD3533FVMBD3533HFN
2.7~5.5 1.0~5.5 1.0~2.75 0.75~1.25 ±30 ±1.0 ±20 ‐ ‐Recovery
‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐20~+100SOP8MSOP8HSON8
BD3531F 4.5~5.5 1.0~5.5 1.0~2.75 0.75~1.25 ±30 ±1.5 ±10 ‐ ‐ ‐ Recovery
‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐10~+100 SOP8
BD3532F 4 3~5 5 1 0~5 5 1 0~2 75 0 75~1 25 ±30 ±3 0 ±20 Recov
40~+100 SOP8
Enab
Soft
Pow
UVL
Out
Cap a
Ther
Prot
BD3532F 4.3~5.5 1.0~5.5 1.0~2.75 0.75~1.25 ±30 ±3.0 ±20 ‐ ‐ery
‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐40~+100 SOP8
BD3537F 4.75~5.25 1.746~1.854 ‐ 0.6~1.6 ±30 ±1.8 ‐ ‐ ‐ ‐ Recovery
‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐30~+100 SOP8
BD3538FBD3538FVMBD3538HFN
2.7~5.5 1.0~5.5 1.0~2.75 0.75~1.25 ±30 ±1.0 ±20 ‐ ‐Recovery
‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐40~+105SOP8MSOP8HSON8
BD3539FVMBD3539NUX
2.7~5.5 1.0~5.5 1.0~2.75 0.75~1.25 ±15 ±1.0 ±25 ‐ Recov
‐ ‐ ‐ ‐ ‐ ‐30~+100 MSOP8VSON008X2030BD3539NUX ery VSON008X2030
BD35390FJ 2.7~5.5 1.0~5.5 1.0~2.75 0.75~1.25 ±15 ±1.0 ‐ Recovery
‐ ‐ ‐ ‐ ‐ ‐30~+100 SOP‐J8
New BD35395FJ‐M 2.7~5.5 1.0~5.5 1.0~2.75 0.5~1.375 ±13.5 ±1.0 ‐ Recovery
‐ ‐ ‐ ‐ ‐40~+105 SOP‐J8
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DC/DC Converters Selection Guide www.rohm.com3838
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