[On-Bright]

GENERAL DESCRIPTION
OB3309 is a highly integrated and high performance U-type Cold Cathode Fluorescent Lamp (CCFL) controller optimized for LCD display backlight application. Comprehensive protection functions are integrated, thus it provides a cost effective yet high reliability LCD backlight solution.

FEATURES
■ High performance push pull topology
■ Optimized for U type CCFL solution
■ Adjustable dimming polarity
■ Adjustable striking frequency & time
■ Flexible Dimming mode Control:
   ○ Analog dimming control
   ○ Internal burst dimming control
   ○ External burst (LPWM) dimming control
■ Adjustable minimum duty for internal burst dimming
■ Adjustable minimum reference voltage for analog dimming
■ 0-2V DC voltage direct dimming control without external circuits
■ Comprehensive Protection Coverage:
   ○ Output over voltage protection (OVP)
   ○ Output over current protection (OCP)
   ○ Open lamp protection and short lamp protection
   ○ Arcing protection

APPLICATIONS
■ LCD Monitor
■ LCD TV
■ Flat panel display