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LP3958 - Lighting Management

Description

LP3958 is a Lighting Management Unit for portable applications.

It is used to drive display backlight and keypad LEDs.

The device can drive 5 separately connected strings of LEDs with high voltage boost converter.

Features

  • n High efficiency boost converter with programmable output voltage n 2 individual drivers for serial display backlight LEDs n 3 drivers for serial keypad LEDs n Automatic dimming controller n Stand alone serial keypad LEDs controller n 3 general purpose IO pins n 25-bump micro SMD Package: (2.54mm x 2.54mm x 0.6mm).

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February 2006 www.DataSheet4U.com LP3958 Lighting Management Unit with High Voltage Boost Converter LP3958 Lighting Management Unit with High Voltage Boost Converter General Description LP3958 is a Lighting Management Unit for portable applications. It is used to drive display backlight and keypad LEDs. The device can drive 5 separately connected strings of LEDs with high voltage boost converter. The keypad LED driver allows driving LEDs from high voltage boost converter or separate supply voltage.The MAIN and SUB outputs are high resolution current mode drivers. Keypad LED outputs can be used in switch mode and current mode. External PWM control can be used for any selected outputs.
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