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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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Other Datasheets by National Semiconductor (now Texas Instruments)

Part Number Description
LP5520 RGB Backlight LED Driver
LP5521 Programmable Three Channel LED Driver
LP5522 Programmable LED Driver
LP5524 Parallel LED Driver
LP5526 Lighting Management
LP55281 Quad RGB Driver
LP5550 PowerWise Technology Compliant Energy Management
LP5551 Compliant Energy Management Unit
LP5552 PWI 2.0 and PowerWise Technology Compliant Energy Management
LP5900 Ultra Low Noise 100 mA Linear Regulator

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.