FAN7313 IC Datasheet

FAN7313 Datasheet, PDF, Equivalent


Part Number

FAN7313

Description

LCD Backlight Inverter Drive IC

Manufacture

Fairchild Semiconductor

Total Page 11 Pages
Datasheet
Download FAN7313 Datasheet


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
Internal Block Diagram
ENA
VIN
1.25V
1μA
+
-
UVLO 4.5V
VIN
+
-
DRV 6V
Internal
Voltage
Reference
UVLO
www.DataSheet4U.com
+
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


Features FAN7313 LCD Backlight Inverter Drive IC September 2006 FAN7313 LCD Backlight Inverter Drive IC Features „ High-Effi ciency Single-Stage Power Conversion „ Wide Input Voltage Range: 4.5V to 25.5 V „ Backlight Lamp Ballast and Soft Di mming „ Reduces Required External Comp onents www.DataSheet4U.com „ Precision Voltage Reference Trimmed to 2% „ Pus h-Pull Topology „ Soft-Start Capabilit y „ PWM Control at Fixed Frequency „ Analog and Burst Dimming Functions „ O pen-Lamp Protection „ Open-Lamp Regula tion „ Over-Voltage Protection „ Shor t-Circuit Protection „ 20-Pin SOIC De scription FAN7313 provides all the cont rol functions for a series parallel res onant converter as well as a pulse widt h modulation (PWM) controller to develo p a supply voltage. Typical operating f requency range is between 30kHz and 250 kHz, depending on the cold cathode fluo rescent lamp (CCFL) and the transformer ’s characteristics. 20-SOIC Applica tions „ LCD TV „ LCD Monitor Ordering Information Part Number FAN7313M FAN7313.
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