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LP3933 Datasheet Lighting Management

Manufacturer: Texas Instruments

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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 sub-LCD 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.).

Overview

OBSOLETE LP3933 www.ti.com SNVS257A – MAY 2004 – REVISED MAY 2004 LP3933 Lighting Management System for Six White LEDs and Two RGB or FLASH LEDs Check for Samples:.

Key Features

  • 1.
  • 2 High Efficiency Programmable 300 mA Magnetic Boost DC-DC converter.
  • 2 separately controlled PWM RGB LED drivers with programmable color, brightness, turn on/off slopes and blinking patterns.
  • FLASH function with up to 6 outputs, each up to 120 mA.
  • 4 constant current LED drivers with programmable 8-bit adjustment (0 … 25 mA/LED).
  • 2 constant current LED drivers with programmable 8-bit adjustment (0 … 25 mA/LED).
  • Functions software controlled.

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