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LP3933 - Lighting Management

Datasheet Summary

Description

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.

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 8-bit adjustment (0 … 25 mA/LED) n 2 constant current LED drivers with programmable 8-bit adjustment (0 … 25 mA/LED) n Functions software controlled through SPI interface n Additional LED on/off and.

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Full PDF Text Transcription

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LP3933 Lighting Management System for Six White LEDs and Two RGB or FLASH LEDs March 2004 LP3933 Lighting Management System for Six White LEDs and Two RGB or FLASH LEDs General Description 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 8-bit constant current drivers that are separately adjustable and matched to 0.5% (typ.). The RGB LED drivers are PWM-driven with programmable color, intensity and blinking patterns. In addition, they feature a FLASH function to support picture taking with cameraenabled cellular phones.
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