LP3933 Datasheet (National Semiconductor)

LP3933, Lighting Management

The LP3933 is a complete lighting management system designed for portable wireless applications.

It contains a boost DC/DC converter, 4 white-LED drivers to drive the main LCD panel backlight, 2 white-LED drivers for the subLCD panel and two sets of RGB/FLASH LED drivers.

Both backlight drivers have

LP3933 Features

* n High Efficiency Programmable 300 mA Magnetic Boost DC-DC converter n 2 separately controlled PWM RGB LED drivers with programmable color, brightness, turn on/off slopes and blinking patterns n FLASH function with up to 6 outputs, each up to 120 mA n 4 constant current LED drivers with programmable