1500-mA LED flash driver sharpens picture quality in camera-enabled cell phones

Norwood, Mass. – Analog Devices Inc. (ADI) has beefed up its power management product portfolio with a 1500-mA white LED driver.

The ADP1650 features a programmable I²C-compatible interface, programmable torch and flash currents for one LED up to 1500 mA, two independent TxMASK inputs and a 4-bit ADC. The inductive-based LED flash driver also provides high efficiency at 85 percent at the typical battery voltage (90 percent peak), which reduces high levels of input battery current during flash and limits battery current drain in torch mode. The ADP1650 measures 2 mm × 1.5 mm in a 12-ball WLCSP package and reduces PCB requirements.

The ADP1650 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 an 0603 case-size input and output capacitor. The new LED driver operates efficiently over the entire battery voltage range by maximizing the input-power-to-LED-power conversion and minimizing battery current draw during flash events. Designed to operate using the limited battery current available for flash, the ADP1650 connects easily to the latest image sensors and image processors to provide excellent picture quality in low ambient light environments.

Pricing: $0.95 each.

Availability: Samples and production quantities.

Datasheet: http://www.analog.com/pr/ADP1650-datasheet