LP3950

更新时间： 2024-11-15 04:44:03

品牌	Logo	应用领域
美国国家半导体 - NSC		驱动器
页数	文件大小	规格书
31页	1093K
描述
Color LED Driver with Audio Synchronizer

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LP3950 数据手册

February 2005

LP3950

Color LED Driver with Audio Synchronizer

General Description

Features

n Audio synchronization for color LEDs with two modes:

Amplitude and Frequency

The LP3950 is a color LED driver with a built-in audio

synchronization feature for any analog audio input such as

polyphonic ring tones and MP3 music. LEDs can be syn-

chronized to an audio signal with two methods - amplitude

and frequency. Also several fine tuning options are available

for differentiation purposes. The chip also has an unique

AGC (Automatic Gain Control) feature which tracks the input

signal level and automatically adjusts the gain to an optimal

value.

n Programmable frequency and amplitude response with

tracking speed control

n Automatic gain control or selectable gain for input signal

optimization

n RGB pattern generator similar to LP3933/LP3936

Magnetic DC-DC boost converter with programmable

boost output voltage

n Selectable SPI or I²C compatible interface

n One pin default enable for non-serial interface users.

One pin selector for synchronization mode

The LP3950 has a high efficiency magnetic DC/DC con-

verter with programmable output voltage and switching fre-

quency. The converter has high output current capability so it

is also able to drive flash LEDs in camera phone applica-

tions.

n Space efficient 32-pin thin CSP laminate package

The LP3950 is similar to LP3933 and LP3936 in that the

color LEDs (or RGB LEDs) can also be programmed to

generate light patterns (programmable color, intensity, on/off

timing, slope and blinking cycle).

All functions are software controllable through a SPI or I²C

compatible interface but the device also supports one pin

control for enabling predefined (default) audio synchroniza-

tion mode.

Applications

n Cellular phones

n MP3/CD/minidisc players

n Toys

Typical Application

20129301

DS201293

www.national.com

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与LP3950相关器件

型号	品牌	获取价格	描述	数据表
LP3950SL	NSC	获取价格	Color LED Driver with Audio Synchronizer
LP3950SL/NOPB	TI	获取价格	具有音频同步器的彩色 LED 驱动器 \| NPC \| 32 \| -40 to 85
LP3950SLX	NSC	获取价格	Color LED Driver with Audio Synchronizer
LP3950SLX/NOPB	TI	获取价格	IC,LASER DIODE/LED DRIVER,LLCC,32PIN,PLASTIC
LP3952	NSC	获取价格	6-Channel Color LED Driver with Audio Synchronization
LP3952RL	NSC	获取价格	6-Channel Color LED Driver with Audio Synchronization
LP3952RLX	NSC	获取价格	6-Channel Color LED Driver with Audio Synchronization
LP3954	NSC	获取价格	Advanced Lighting Management Unit
LP3954	TI	获取价格	高级照明管理单元
LP39542	NSC	获取价格	Advanced Lighting Management Unit