Fairchild FAN7316 Lcd backlight inverter drive ic Datasheet

FAN7316
LCD Backlight Inverter Drive IC
Features
Description
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The FAN7316 is a LCD backlight inverter drive IC that
controls N-N half-bridge topology. The FAN7316 can
also drive push-pull topology.
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High-Efficiency Single-Stage Power Conversion
Wide Input Voltage Range: 4.5V to 24V
Backlight Lamp Ballast and Soft Dimming
Reduces Required External Components
Precision Voltage Reference Trimmed to 2%
N-N Half-Bridge Topology
PWM Control at Fixed Frequency
Analog and Burst Dimming Function
Selectable Burst Dimming Polarity by ADIM Voltage
Striking Frequency Depending on Normal
Frequency
Open-Lamp Protection
Open-Lamp Regulation
Short-Circuit Protection
20-Pin SOIC
The FAN7316 provides a low-cost solution by integrating
the external open-lamp protection circuit. The operating
voltage of the FAN7316 is wide, so the FAN7316 doesn’t
need an external regulator to supply the voltage to the
IC. The FAN7316 has the internal bootstrap driver, so
the external fast recovery diode can be avoided.
The FAN7316 provides various protections, such as
open-lamp regulation, arc protection, open-lamp
protection, short-circuit protection, and CMP-high
protection to increase the system reliability. The
FAN7316 provides analog dimming, burst dimming, and
burst dimming polarity selection functions.
The FAN7316 is available in a 20-SOIC package.
Applications
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LCD TV
LCD Monitor
Ordering Information
Part Number
Package
Operating Temperature
Packing Method
FAN7316M
20-SOIC
-25 to +85°C
RAIL
FAN7316MX
20-SOIC
-25 to +85°C
TAPE & REEL
All packages are lead free per JEDEC: J-STD-020B standard.
Protected under U.S. patent number 5,652,479.
© 2007 Fairchild Semiconductor Corporation
FAN7316 • 1.0.1
www.fairchildsemi.com
FAN7316 — LCD Backlight Inverter Drive IC
January 2008
Application
Device
Input Voltage Range
Number of lamps
19-Inch LCD Monitor
FAN7316
14.5±10%
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1. Features
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High-Efficiency Single-Stage Power Conversion
N-N Half-Bridge Topology
Reduces Required External Components
Enhanced System Reliability through Protection Functions
F1
C1
330u
FUSE
C2
1u
0
OLP3 OLP4
OLR
0
0
0
0
C5
10n
R2
R3
100k 100k
R1
30k
VB
VIN
VS
OUTH
SCP
RT
BCT
OLR
IC1
15V
OLP4
OLP3
1
2
3
4
5
6
7
8
9
10
D2
BAV70
SN1
DN1
GN1
DN1
10R
FAN7316
0
VREF
OUTL
GND
ENA
ADIM
BDIM
FB
CMP
OLP2
OLP1
10R
C10
2.7n
0
R5
10k
1
2
2
0
0
D3
BAV70
SN2
OLP3
R6
680
35001WR-02A
DN2
TX2
GN2
C12
33n
OLP1 OLP2
0
REF
R10
12k
R13
100k
R12
75k
C23
N.C.
0
C7 10u
CN3
35001WR-02A
10k
0
R27
10k
C15
3p
0
R29
0
D4
BAV70
OLR
R14
10k
0
R18
100k
0
C16
3p
C18
2.7n
0
R15
10k
2
2
1
2
2
0
OLP1
C19
2.7n
0
C21
4.7n
0
0
1
OLP2
C13
1u
R11
9.1k
C14
0.1u
R20
R23
N.C.
1
DN2
AOP800
0
R22
0R
CN4
0
1
R25
N.C.
R7
680
0
0
R8
R9
100k 100k
2
C11
2.7n
C4 10u
R30
ON/OFF
R4
10k
0
R31
DIM(0~3.3V)
12505WR-10
1
1
2
OLP4
M1
CN5
C9
3p
C8
3p
C6
1u
R24
0R
1
CN1
35001WR-02A
0
0
CN2
35001WR-02A
LTM190EX
TX1
C3
1u
D5
BAV70
R17
680
0
0
R16
680
0
R28
0
C20
1n
C17
10n
0
0
R19
10k
0
20k
R21
20k
Figure 47. Typical Application Circuit
2. Transformer Schematic Diagram
Figure 48. Transformer Schematic Diagram
3. Core & Bobbin
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Core: EFD2126
Material: PL7
Bobbin: EFD2126
© 2007 Fairchild Semiconductor Corporation
FAN7316 • 1.0.1
www.fairchildsemi.com
18
FAN7316 — LCD Backlight Inverter Drive IC
Typical Application Circuit (LCD Backlight Inverter)
FAN7316 — LCD Backlight Inverter Drive IC
© 2007 Fairchild Semiconductor Corporation
FAN7316 • 1.0.1
www.fairchildsemi.com
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