2006 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN
7313 LCD
Backlight Inverter D
rive IC
September 2006
FAN7313 Rev. 1.0.0
FAN7313 LCD Backlight Inverter Drive ICFeatures High-Efficiency
Single-Stage Power Conversion Wide Input Voltage Range: 4.5V to
25.5V Backlight Lamp Ballast and Soft Dimming Reduces Required
External Components Precision Voltage Reference Trimmed to 2%
Push-Pull Topology Soft-Start Capability PWM Control at Fixed
Frequency Analog and Burst Dimming Functions Open-Lamp Protection
Open-Lamp Regulation Over-Voltage Protection Short-Circuit
Protection 20-Pin SOIC
Applications LCD TV LCD Monitor
DescriptionFAN7313 provides all the control functions for a
seriesparallel resonant converter as well as a pulse width
mod-ulation (PWM) controller to develop a supply voltage.Typical
operating frequency range is between 30kHz and250kHz, depending on
the cold cathode fluorescentlamp (CCFL) and the transformers
characteristics.
Ordering Information
20-SOIC
Part Number Package Pb-Free Operating Temperature Range Packing
MethodFAN7313M 20-SOIC Yes
-25C ~ 85CRail
FAN7313MX 20-SOIC Yes Tape & Reel
FAN
7313 LCD
Backlight Inverter D
rive IC
2006 Fairchild Semiconductor Corporation
www.fairchildsemi.comFAN7313 Rev. 1.0.0 8
Typical Application Circuits
1. Schematic
Figure 4. Typical Application Circuit
2. Transformer Schematic DiagramSupported by Namyang electronics
(http://www.namyangelec.co.kr).
Figure 5. Transformer Schematic
3. Core & Bobbin Core: EFD2124 Material: PL7 Bobbin:
EFE2124
4. Winding Specification
Application Lamps Input Voltage19-inch LCD Monitor 4 13V
Pin No. Wire Turns Inductance Leakage Inductance Remarks6 -->
4 1 UEW 0.35 19 50H 1.2H 1KHz, 1V3 --> 5 1 UEW 0.35 19 50H 1.2H
1KHz, 1V7 --> 9 1 UEW 0.04 2300 826mH 260mH 1KHz, 1V
REF
OLR
OLR
OLP4
OLP1
OLP2
OLP4OLP3
OLP2
OLP3
OLP1
0
0
0
0
0
0
0
0
00
0
0 0
0
0
0
0
0
0
0
0 0
0 0
0
00
0
00
0
0
0
HOT1
COLD2
CN4CCFLCN4CCFL
C1012nC1012n
C252.2nC252.2n
R16680R16680
R23100kR23100k
R1010kR1010k
HOT1
COLD2
CN1CCFLCN1CCFL
12345678910
CN5
??
CN5
??
R1910kR1910k
C201nC201n
C1812nC1812n
TX1TX1
R51kR51k
C1912nC1912n
C1220uC1220u
R17680R17680
R8100kR8100k
R6680R6680
R2933R2933
C915pC915p
D5
BAV70
D5
BAV70
R2833R2833
HOT1
COLD2
CN2CCFLCN2CCFL
C815pC815p
D3
BAV70
D3
BAV70R9100kR9100k
C131uC131u
C31uC31u
R141kR141k
R218.2kR218.2k
R12120kR12120k
C2310nC2310n
SN
GN
SN
GN DN
DN
DN
DN
M1
HUFA76413DK8
SN
GN
SN
GN DN
DN
DN
DN
M1
HUFA76413DK8
R2100kR2100k
C1615pC1615p
C1410nC1410n
C1515pC1515p
TX1TX1
R151kR151k
C214.7nC214.7n
C21uC21u
C510nC510n
C1710nC1710n
R22
100k
R22
100k
R7680R7680
HOT1
COLD2
CN3CCFLCN3CCFL
C1233nC1233n
C1112nC1112n
D2
BAV70
D2
BAV70
R18100kR18100k
R118.2kR118.2k
C22330pC22330p
F1
FUSE
F1
FUSE
D4
BAV70
D4
BAV70
R3100kR3100k
C242.2nC242.2n
R41kR41k
IC1FAN7313
FB
BDIM
ADIM
OLP
2
SS_C
MP
GND
OLP
1
BCT/FT
OLR RT
OLP
4
OLP
3
OUTH
SCP
ENA
OUTL
VREF
VS
VB
VIN
R2010kR2010k
R127kR127k
R1310KR1310K
FAN7313 Rev:00
FAN7313 Rev. 00
TRADEMARKS The following are registered and unregistered
trademarks Fairchild Semiconductor owns or is authorized to use and
is not intended to be an exhaustive list of all such
trademarks.
ACEx GlobalOptoisolator OCXPro PSerDes TinyBuckActiveArray GTO
OPTOLOGIC SILENT SWITCHER TinyLogic
Bottomless HiSeC OPTOPLANAR SMART START TINYOPTOBuild it Now I2C
PACMAN SPM TinyPowerCoolFET i-Lo POP Stealth TinyPWMCROSSVOLT
ImpliedDisconnect Power247 SuperFET TruTranslationDOME IntelliMAX
PowerEdge SuperSOT-3 UHCEcoSPARK ISOPLANAR PowerSaver SuperSOT-6
UltraFET
E2CMOS LittleFET PowerTrench SuperSOT-8 UniFETEnSigna
MICROCOUPLER QFET SyncFET VCXFACT MicroFET QS TCM WireFACT Quiet
Series MicroPak QT Optoelectronics TinyBoostFAST MICROWIRE Quiet
SeriesFASTr MSX RapidConfigure Across the board. Around the
world.FPS MSXPro RapidConnect Programmable Active DroopFRFET OCX
ScalarPump The Power Franchise
DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE
CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY
LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR
CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER
ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. THESE SPECIFICATIONS
DO NOT EXPAND THE TERMS OF FAIRCHILDS WORLDWIDE TERMS AND
CONDITIONS, SPECIFICALLY THE WARRANTY THEREIN, WHICH COVERS THESE
PRODUCTS.
LIFE SUPPORT POLICY FAIRCHILDS PRODUCTS ARE NOT AUTHORIZED FOR
USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS
WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR
CORPORATION.
As used herein:
1. Life support devices or systems are devices or systems which,
(a) are intended for surgical implant into the body or (b) support
or sustain life, and (c) whose failure to perform when properly
used in accordance with instructions for use provided in the
labeling, can be reasonably expected to result in a significant
injury of the user.
2. A critical component in any component of a life support,
device, or system whose failure to perform can be reasonably
expected to cause the failure of the life support device or system,
or to affect its safety or effectiveness.
PRODUCT STATUS DEFINITIONS
Definition of Terms
Datasheet Identification Product Status Definition
Advance Information Formative or In Design
This datasheet contains the design specifications for product
development. Specifications may change in any manner without
notice.
Preliminary First Production This datasheet contains preliminary
data; supplementary data will be published at a later date.
Fairchild Semiconductor reserves the right to make changes at any
time without notice to improve design.
No Identification Needed Full Production This datasheet contains
final specifications. Fairchild Semiconductor reserves the right to
make changes at any time without notice to improve design.
Obsolete Not In Production This datasheet contains
specifications on a product that has been discontinued by Fairchild
Semiconductor. The datasheet is printed for reference information
only.
Rev. I20
FAN
7313 LCD
Backlight Inverter D
rive IC
2006 Fairchild Semiconductor Corporation
www.fairchildsemi.comFAN7313 Rev. 1.0.0 11
