The LP55271 is a lighting management unit for handhelddevices with I2C compatible control interface. The LP55271has a step-up DC/DC converter with high current output andit drives display and keypad backlights and powers the cameraflash LED. In addition the DC/DC converter has theoutput current to power for example an audio amplifier simultaneously.The chip has four 8-bit programmable highefficiency constant current LED drivers and a FLASH LEDdriver. Built-in audio synchronization feature allows the userto synchronize one of the LEDs to audio input.
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