Single 1500-Ma Led Flash Driver Improves Picture Quality For Camera-Enabled Cell Phones

Jul 26, 2010 Analog Devices, Inc. (ADI), a global leader in high-performance semiconductors for signal-processing applications, has introduced the ADP1650 1500-mA white LED driver.

The ADP1650 is a compact, highly efficient, single white LED flash driver for high resolution camera phones that improves picture and video quality in low light environments.

It features like a programmable I²C-compatible interface, programmable torch and flash currents for one LED up to 1500 mA, two independent TxMASK1 inputs and a 4-bit ADC.
It provides high efficiency at 85 percent at the typical battery voltage (90 percent peak). The ultra-compact ADP1650 measures only 2 mm × 1.5 mm in a 12-ball WLCSP package and reduces PCB requirements.
It enables a complete high power flash design in less than 17 mm2 by integrating a programmable 1.5-MHz or 3.0-MHz synchronous inductive boost converter, a tiny, 1-mm high, low-cost, 1-μH power inductor, and 0603 case-size input and output capacitors. The ADP1650 operates within specification over the full −40°C to +125°C junction temperature range.

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