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參數資料
| 型號： | LP5527TLX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 顯示驅動器 |
| 英文描述： | Tiny LED Driver for Camera Flash and 4 LEDs with I2C Programmability, Connectivity Test and Audio Synchronization |
| 中文描述： | LED DISPLAY DRIVER, PBGA30 |
| 封裝： | 2.5 X 3 MM, 0.60 MM HEIGHT, BGA-30 |
| 文件頁數： | 1/21頁 |
| 文件大小： | 829K |
| 代理商： | LP5527TLX |
LP5527
Tiny LED Driver for Camera Flash and 4 LEDs with I
2
C
Programmability, Connectivity Test and Audio
Synchronization
General Description
The LP5527 is a lighting management unit for handheld
devices with I
2
C compatible control interface. The LP5527
has a step-up DC/DC converter with high current output and
it drives display and keypad backlights and powers the cam-
era flash LED. In addition the DC/DC converter has the
output current to power for example an audio amplifier si-
multaneously. The chip has four 8-bit programmable high
efficiency constant current LED drivers and a FLASH LED
driver. Built-in audio synchronization feature allows the user
to synchronize one of the LEDs to audio input.
The LP5527 has an integrated 400 mA flash driver with a
safety stop feature and 50 mA torch mode. An external
enable pin is provided for the synchronizing the flash with the
camera action. An external software independent test inter-
face provides a fast way to find a broken path or short on
LED circuits. Very small microSMD package together with
minimum number of external components is a best fit for
handheld devices.
Features
n
High current boost DC-DC converter (up to 1A output
current)
n
Programmable boost output voltage
n
400 mA flash LED constant current driver with low
tolerance and a safety circuit
n
Synchronization pin for the flash timing
n
Two single-ended audio inputs with gain control
n
Four constant current 15 mA LED drivers with 8-bit
programmable brightness control
n
Audio synchronization feature
n
I
2
C compatible control interface
n
Built-in LED connectivity test to maximize manufacturing
yield
n
Small microSMD-30 package (2.5 mm x 3.0 mm x 0.6
mm)
Applications
n
Camera FLASH, funlight and backlight driving in battery
powered devices
Typical Application
20184001
May 2006
L
2
C
T
2006 National Semiconductor Corporation
DS201840
www.national.com
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| LP55281RL | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Quad RGB Driver |
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| LP55281RLEV | 功能描述:LED 照明開發工具 LP55281RLEV EVAL BOARD RoHS:否 制造商:Fairchild Semiconductor 產品:Evaluation Kits 用于:FL7732 核心: 電源電壓:120V 系列: 封裝: |
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