Datasheet > LP3933

LP3933

更新时间： 2024-11-14 23:16:47

品牌	Logo	应用领域
美国国家半导体 - NSC		/
页数	文件大小	规格书
18页	403K
描述
Lighting Management System for Six White LEDs and Two RGB or FLASH LEDs

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LP3933 数据手册

March 2004

LP3933

Lighting Management System for Six White LEDs and

Two RGB or FLASH LEDs

General Description

Features

n High Efficiency Programmable 300 mA Magnetic Boost

DC-DC converter

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.

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

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)

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 camera-

enabled cellular phones.

An efficient magnetic boost DC/DC converter provides the

required bias for LEDs, operating from a single Li-Ion bat-

tery. The DC/DC converter output voltage is user program-

mable from 4.1V to 5.3V for adapting to different LED types

and for efficiency optimization. All functions are software

controllable through a SPI interface and 19 internal registers.

n Functions software controlled through SPI interface

n Additional LED on/off and dimming hardware control

n Programmable low current Standby mode

n Low voltage digital interface down to 1.8V

n Space efficient 32-pin thin CSP laminate package

Applications

n Cellular Phones

n PDAs

Typical Application

20080505

DS200805

www.national.com

12 3 4 5 6 7...18

中文翻译

下载PDF

与LP3933相关器件

型号	品牌	获取价格	描述	数据表
LP3933SL	NSC	获取价格	Lighting Management System for Six White LEDs and Two RGB or FLASH LEDs
LP3933SL/NOPB	TI	获取价格	IC,LED DISPLAY DRIVER,12-SEG,COMMON-ANODE,LLCC,32PIN,PLASTIC
LP3933SLX	NSC	获取价格	Lighting Management System for Six White LEDs and Two RGB or FLASH LEDs
LP3933SLX/NOPB	TI	获取价格	IC,LED DISPLAY DRIVER,12-SEG,COMMON-ANODE,LLCC,32PIN,PLASTIC
LP3936	NSC	获取价格	Lighting Management System for Six White LEDs and One RGB or FLASH LED
LP3936SL	NSC	获取价格	Lighting Management System for Six White LEDs and One RGB or FLASH LED
LP3936SLX	NSC	获取价格	Lighting Management System for Six White LEDs and One RGB or FLASH LED
LP3936SLX/NOPB	TI	获取价格	Lighting Management System for Six White LEDs and One RGB or FLASH LED 32-TLGA -40 to 85
LP3939	NSC	获取价格	Power Amplifier Driver For Dual Band CDMA Handsets
LP3939ILQ	NSC	获取价格	Power Amplifier Driver For Dual Band CDMA Handsets