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ADP1655 Datasheet Dual LED Flash Driver

Manufacturer: Analog Devices

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General Description

The ADP1655 is a very compact, highly efficient, dual white LED flash driver for high resolution camera phones, which improves picture and video quality in low light environments.

The device integrates a 2 MHz synchronous inductive boost convertor, an I2C-compatible interface and a 500 mA current source.

The high switching frequency enables the use of a tiny, low profile 2.2 μH power inductor, and the current source permits LED cathode grounding for thermally enhanced, low EMI and compact layouts.

Overview

Dual LED Flash Driver with I2C-Compatible Interface ADP1655.

Key Features

  • Ultracompact solution Small 2 mm × 1.5 mm 12-ball WLCSP package Tiny, low profile 2.2 μH power inductor LED current source for local LED grounding and low EMI Synchronous 2 MHz PWM boost convertor, no external diode High efficiency: 88% peak Reduces high levels of input battery current during flash Limits battery current drain in torch mode I2C programmable Currents up to 400 mA in flash mode for two LEDs Currents up to 500 mA in flash mode for one LED with 5% accuracy Currents up to 160 mA in t.

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