Inverter Driver. FAN7313 Datasheet

FAN7313 Driver. Datasheet pdf. Equivalent


Fairchild Semiconductor FAN7313
FAN7313
LCD Backlight Inverter Drive IC
September 2006
Features
„ 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
www.DataSheet4U.c„omPrecision 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
Description
FAN7313 provides all the control functions for a series
parallel resonant converter as well as a pulse width mod-
ulation (PWM) controller to develop a supply voltage.
Typical operating frequency range is between 30kHz and
250kHz, depending on the cold cathode fluorescent
lamp (CCFL) and the transformer’s characteristics.
20-SOIC
Ordering Information
Part Number
FAN7313M
FAN7313MX
Package
20-SOIC
20-SOIC
Pb-Free
Yes
Yes
Operating Temperature Range
-25°C ~ 85°C
Packing Method
Rail
Tape & Reel
© 2006 Fairchild Semiconductor Corporation
FAN7313 Rev. 1.0.0
www.fairchildsemi.com


FAN7313 Datasheet
Recommendation FAN7313 Datasheet
Part FAN7313
Description LCD Backlight Inverter Driver
Feature FAN7313; FAN7313 LCD Backlight Inverter Drive IC September 2006 FAN7313 LCD Backlight Inverter Drive IC Fea.
Manufacture Fairchild Semiconductor
Datasheet
Download FAN7313 Datasheet




Fairchild Semiconductor FAN7313
Internal Block Diagram
ENA
VIN
1.25V
1μA
+
-
UVLO 4.5V
VIN
+
-
DRV 6V
Internal
Voltage
Reference
UVLO
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+
3V -
+
0.25V
2V -
Timer
16 switching
cycles @ Normal
2s @ Strike
+
- 2V
OLR
BDIM
BCT/FT
-
2V +
Positive dimming polarity
Gm Amp. with only
sink current
Disable @ Striking
max. 2V
min. 0.5V
FAULT
BDIM
VBURST
Controller
2.3V
Protection
TSD 150 °C
FAULT
0.45*Va +
-
Input
Control
Logic
VSS_STK
Drivers
VREF
FB
ADIM Va
CMP
2.2V
-
+
+
Error Amp.
VSS_STK
OLP1
20μA
-
1V +
Output
Control
Logic
VSS_STK
OSC
max. 2V
min. 0.5V
Frequency sweep 4ms
Fstrike: Fnormal = 1.3:1
-
20μA
+ 1V
VREF
SCP
VB
OUTH
VS
OUTL
GND
RT
OLP3
OLP2
20μA
-
1V +
-
20μA
+ 1V
OLP4
Figure 1. Functional Block Diagram of FAN7313
FAN7313 Rev. 01
© 2006 Fairchild Semiconductor Corporation
FAN7313 Rev. 1.0.0
2
www.fairchildsemi.com



Fairchild Semiconductor FAN7313
Pin Assignments
OLP3 OLP4 OLR BCT/FT RT
20 19 18 17 16
SCP
15
VS OUTH VB
14 13 12
VIN
11
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FAN7313
1 2 3 4 5 6 7 8 9 10
OLP1 OLP2 CMP FB BDIM ADIM ENA GND OUTL VREF
FAN7313 Rev. 00
Figure 2. Pin Configuration (Top View)
Pin Definitions
Pin #
1
2
3
4
5
6
7
Name
OLP1
OLP2
CMP
FB
BDIM
ADIM
ENA
8 GND
9 OUTL
10 VREF
Description
Open-Lamp Protection 1
Open-Lamp Protection 2
Error Amplifier Output
Error Amplifier Input
Burst Dimming Input
Analog Dimming Input
Enable Input
Ground
Low-Side Driver Output
Reference Voltage
Pin #
11
12
13
14
15
16
17
18
19
20
Name
VIN
VB
OUTH
VS
SCP
RT
BCT/FT
OLR
OLP4
OLP3
Description
Supply Voltage
Connected to VREF Internally
High-Side Driver Output
Connected to GND Internally
Short-Circuit Protection
Timing Resistor
Burst Dimming Timing Capacitor/
Fault Signal Output
Open-Lamp Regulation
Open-Lamp Protection 4
Open-Lamp Protection 3
© 2006 Fairchild Semiconductor Corporation
FAN7313 Rev. 1.0.0
3
www.fairchildsemi.com







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