Data Sheet

May 2011
© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7319 • 1.0.1
FAN7319 — LCD Backlight Inverter Drive IC
FAN7319
LCD Backlight Inverter Drive IC
Features
 High-Efficiency Single-Stage Power Conversion
 Wide Input Voltage Range: 10V to 24V
 Backlight Lamp Ballast and Soft Dimming
 Minimal Required External Components
 Precision Voltage Reference Trimmed to 2%
 ZVS or ZCS Push-Pull & Full-Bridge Topology
 PWM Control at Fixed Frequency
 ZCS Control by Sensing Resonant Tank Current
 External Pulse Burst Dimming Function - Positive
 Analog Dimming Function - Positive
 Programmable Striking Frequency
 Open-Lamp Protection
 Open-Lamp Regulation
 Short-Lamp Protection
 CMP-High Protection
 Dynamic Contrast Ratio Mode
 Thermal Shutdown
 20-Pin SOP
Applications
 LCD TV
 LCD Monitor
Description
The FAN7319 is a LCD backlight inverter drive IC that
controls N-N push-pull topology or N-N full-bridge
topology using a proprietary phase-shift method.
The FAN7319 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 is wide, so an external
regulator isn’t necessary to supply voltage to the IC.
The FAN7319 provides various protections, such as
open-lamp regulation, open-lamp protection, short-lamp
protection, CMP-high protection, and FB-high protection,
to increase the system reliability. The FAN7319 provides
burst dimming function and analog dimming.
The FAN7319 is available in a 20-Lead Small Outline
Integrated Circuit (SIOC) package.
Ordering Information
Part Number Operating Temperature Package Packing Method
FAN7319M -25 to +85°C
20-Lead, SOIC, JEDEC
MS-013, .300 Inch, Wide Body
Rail
FAN7319MX -25 to +85°C Tape & Reel