Part Number : OB3309

Function : High Integrated U-Type CCFL Backlight Driver

Package : SOP, DIP 16 Pin Type

Maker : On-Bright

Image :
OB3309 datasheet

Description :

OB3309 is a high integrated and high performance U-type Cold Cathode Fluorescent Lamp (CCFL) controller optimized for LCD monitor backlight application. Comprehensive protection functions are integrated, thus it provides a low-cost and high reliability LCD backlight solution with minimum system BOM count. OB3309 controls push pull topology and supports various dimming functions.


1. Minimal required external components
2. Push pull topology
3. High precision reference and frequency control
4. External programmability of the key parameters
5. Flexible Dimming mode Control:
(1) Selective dimming polarity
(2) Analog, internal burst and external burst (LPWM) dimming control
(3) 0-2V DC voltage or external PWM direct dimming control without external circuits
(4) Dimming range programmable (100%~0%)
6.  Available in SOP16 package, RoHS compliant

Datasheet PDF Download :
OB3309 pdf

Others datasheet of same file : 0B3309, OB3309RP
2021/11/11 17:31 2021/11/11 17:31