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LP5526

National Semiconductor
Part Number LP5526
Manufacturer National Semiconductor
Description Lighting Management
Published Oct 9, 2006
Detailed Description www.DataSheet4U.com LP5526 Lighting Management Unit with High Voltage Boost Converter with up to 150mA Serial FLASH LED...
Datasheet PDF File LP5526 PDF File

LP5526
LP5526

Overview
www.
DataSheet4U.
com LP5526 Lighting Management Unit with High Voltage Boost Converter with up to 150mA Serial FLASH LED Driver March 2006 LP5526 Lighting Management Unit with High Voltage Boost Converter with up to 150mA Serial FLASH LED Driver General Description LP5526 is a Lighting Management Unit for portable applications.
It is used to drive display backlights, keypad LEDs, RGB LEDs and camera flash LEDs.
LP5526 can drive 2 separately connected strings of LEDs with high voltage boost converter.
The RGB driver allows driving either individual color LEDs or RGB LED from separate supply power, or it can be used to drive series connecter flash LEDs from high voltage boost converter.
The backlight drivers (MAIN and SUB pins) are both high resolution constant current mode drivers.
The flash outputs can drive series connected flash LED with up to 150mA of current.
External PWM control can be used for dimming any selected LED outputs or it can be used to trigger the flash.
The flash has also 1-second safety timer.
The device is controlled through 2-wire low voltage I2C compatible interface that reduces the number of required connections.
Features n High efficiency boost converter with programmable output voltage up to 20V n 2 individual drivers for serial display backlight LEDs n Automatic dimming controller n Stand alone RGB controller n Dedicated flash function n Safety function to avoid prolonged flash n 3 general purpose IO pins n 25-bump micro SMD Package: (2.
54mm x 2.
54mm x 0.
6mm) Applications n Cellular Phones and PDAs n MP3 Players n Digital Cameras Typical Application DataSheet4U.
com DataShee 20179770 DataSheet4U.
com © 2006 National Semiconductor Corporation DS201797 www.
national.
com www.
DataSheet4U.
com LP5526 Typical Application (Continued) 20179701 Connection Diagrams 25-Bump Thin Micro SMD Package, Large Bump NS Package Number TLA25CCA et4U.
com DataShee DataSheet4U.
com 20179771 20179772 Top View Bottom View DataSheet4U.
com www.
nationa...


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