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參數資料
| 型號： | LP3950 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Color LED Driver with Audio Synchronizer |
| 中文描述： | 彩色LED驅動器與音頻同步 |
| 文件頁數： | 1/31頁 |
| 文件大小： | 1085K |
| 代理商： | LP3950 |
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LP3950
Color LED Driver with Audio Synchronizer
General Description
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.
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.
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 I
2
C
compatible interface but the device also supports one pin
control for enabling predefined (default) audio synchroniza-
tion mode.
Features
n
Audio synchronization for color LEDs with two modes:
Amplitude and Frequency
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
n
Magnetic DC-DC boost converter with programmable
boost output voltage
n
Selectable SPI or I
2
C compatible interface
n
One pin default enable for non-serial interface users.
One pin selector for synchronization mode
n
Space efficient 32-pin thin CSP laminate package
Applications
n
Cellular phones
n
MP3/CD/minidisc players
n
Toys
Typical Application
20129301
February 2005
L
2005 National Semiconductor Corporation
DS201293
www.national.com
相關PDF資料 |
PDF描述 |
|---|---|
| LP3950SL | Color LED Driver with Audio Synchronizer |
| LP3950SLX | Color LED Driver with Audio Synchronizer |
| LP3952 | 6-Channel Color LED Driver with Audio Synchronization |
| LP3952RLX | 6-Channel Color LED Driver with Audio Synchronization |
| LP3952RL | 6-Channel Color LED Driver with Audio Synchronization |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LP3950SL | 制造商:Texas Instruments 功能描述:LED DRIVER COLOUR POWERWISE LLP32 |
| LP3950SL/CSP1 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
| LP3950SL/NOPB | 功能描述:LED照明驅動器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| LP3950SLX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Color LED Driver with Audio Synchronizer |
| LP3950SLX/NOPB | 功能描述:IC LED DRVR WHITE BCKLGT 32-TSCP RoHS:是 類別:集成電路 (IC) >> PMIC - LED 驅動器 系列:PowerWise® 標準包裝:1 系列:- 恒定電流:- 恒定電壓:- 拓撲:PWM，切換式電容器（充電泵） 輸出數:1 內部驅動器:是 類型 - 主要:背光 類型 - 次要:白色 LED 頻率:642kHz 電源電壓:2.7 V ~ 5.5 V 輸出電壓:5V 安裝類型:表面貼裝 封裝/外殼:10-VFDFN 裸露焊盤 供應商設備封裝:10-VSON 包裝:剪切帶 (CT) 工作溫度:-30°C ~ 85°C 產品目錄頁面:1371 (CN2011-ZH PDF) 其它名稱:BD1603NUV-E2CT |
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