FAN7318B Datasheet, PDF (1/24 Pages) Fairchild Semiconductor – LCD Backlight Inverter Drive IC

August 2009
FAN7318B
LCD Backlight Inverter Drive IC
Features
ƒ High-Efficiency Single-Stage Power Conversion
ƒ Wide Input Voltage Range: 6V to 30V
ƒ Backlight Lamp Ballast and Soft Dimming
ƒ Minimal External Components Required
ƒ Precision Voltage Reference Trimmed to 2%
ƒ Half-Bridge Topology
ƒ Soft-Start
ƒ PWM Control at Fixed Frequency
ƒ Analog Dimming Function
ƒ Burst Dimming Function
ƒ Programmable Striking Frequency
ƒ Open-Lamp Protection
ƒ Open-Lamp Regulation
ƒ Over-Voltage Protection
ƒ Short-Lamp Protection
ƒ CMP-High Protection
ƒ Thermal Shutdown
ƒ 20-Pin SOIC
Applications
ƒ LCD TV
ƒ LCD Monitor
Description
The FAN7318B is a LCD backlight inverter drive IC that
controls P-N half-bridge topology.
The FAN7318B provides a low-cost solution and reduces
external components by integrating proprietary wave
rectifiers for open-lamp protection and regulation. The
operating voltage range of the FAN7318B is wide, so an
external regulator isn’t necessary to supply the voltage to
the IC.
The FAN7318B provides various protections, such as
open-lamp regulation, over-voltage protection, open-
lamp protection, short-Lamp protection, CMP-high
protection, to increase the system reliability. The
FAN7318B provides burst dimming and analog dimming.
The FAN7318B is available in a 20-SOIC package.
Ordering Information
Part
Number
Operating
Temperature
Package
Eco
Status
Packing
Method
FAN7318BM
FAN7318BMX
-25 to +85°C
20-Lead, Small Outline Integrated Circuit (SOIC)
RoHS
Rail
Tape & Reel
For Fairchild’s definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
Protected under U.S. patent no. 5,652,479.
© 2009 Fairchild Semiconductor Corporation
FAN7318B • 1.0.0
www.fairchildsemi.com