FAN7317B Datasheet, PDF (1/4 Pages) Fairchild Semiconductor – FAN7317B LCD Backlight Inverter Drive IC

April 2011
FAN7317B
LCD Backlight Inverter Drive IC
Features
 High-Efficiency, Single-Stage Power Conversion
 Wide Input Voltage Range: 6V to 28V
 Backlight Lamp Ballast and Soft Dimming
 Minimal Required External Components
 Precision Voltage Reference Trimmed to 2%
 ZVS Full-Bridge Topology
 Soft-Start
 PWM Control at Fixed Frequency
 Burst Dimming Function
 Dynamic Contrast Ratio Function
 Programmable Striking Frequency
 Open-Lamp Protection (OLP)
 Open-Lamp Regulation (OLR)
 Short-Lamp Protection (SLP)
 Thermal Shutdown (TSD)
 20-Pin SOIC
Applications
 LCD TV
 LCD Monitor
Description
The FAN7317B is a LCD backlight inverter drive IC that
controls P-N full-bridge topology using a new propriety
phase-shift method.
The FAN7317B provides a low-cost solution and reduces
external components by integrating full wave rectifiers for
open-lamp protection and regulation (patent pending).
The operating voltage range of the FAN7317B is wide, so
an external regulator isn’t necessary to supply the voltage
to the IC.
The FAN7317B provides protections such as open-lamp
regulation, open-lamp protection, and short-lamp
protection to increase the system reliability. The
FAN7317B provides a burst-dimming function and analog
dimming is possible, in a narrow range, by adding
external components.
The FAN7317B is available in a 20-pin SOIC package.
Ordering Information
Part Number
FAN7317BM
FAN7317BMX
Operating
Temperature
-25 to +85°C
Package
20-Pin Small Outline Integrated Circuit (SOIC)
Packing
Method
Rail
Tape and Reel
© 2009 Fairchild Semiconductor Corporation
FAN7317B • 1.0.2
www.fairchildsemi.com