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LP5527 - lighting management

General Description

The LP5527 is a lighting management unit for handheld devices with I2C 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 camera flash LED.

Key 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 I2C compatible control interface n Built-in LED connectivity test to maximize manufacturing yield n Small.

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📁 Similar Datasheet

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Other Datasheets by National Semiconductor (now Texas Instruments)

Part Number Description
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LP5526 Lighting Management

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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www.DataSheet4U.com May 2006 LP5527 Tiny LED Driver for Camera Flash and 4 LEDs with I2C Programmability, Connectivity Test and Audio Synchronization LP5527 Tiny LED Driver for Camera Flash and 4 LEDs with I2C Programmability, Connectivity Test and Audio Synchronization General Description The LP5527 is a lighting management unit for handheld devices with I2C 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 camera flash LED. In addition the DC/DC converter has the output current to power for example an audio amplifier simultaneously. The chip has four 8-bit programmable high efficiency constant current LED drivers and a FLASH LED driver.