FAN7319 Datasheet, PDF (1/23 Pages) Fairchild Semiconductor – LCD Backlight Inverter Drive IC

June 2011
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. 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
FAN7319M
FAN7319MX
-25 to +85°C
-25 to +85°C
Package
20-Lead, SOIC, JEDEC
MS-013, .300 Inch, Wide Body
Packing Method
Rail
Tape & Reel
© 2010 Fairchild Semiconductor Corporation
FAN7319 • 1.0.1
www.fairchildsemi.com