American company ADI has announced the launch of the 1500 mA white LED driver ADP1650, the latest addition to the ADI power management family and inductive flash driver family. The ADP1650 offers exceptional flexibility, such as a programmable I 2 C compatible interface, programmable flashlight current and flash current (up to 1500 mA for one LED), two independent TxMASK inputs, and a 4-bit ADC.
This new LED driver also provides 85% high conversion efficiency below typical battery voltages, reducing the voltage of the input battery current during flash operation and limiting battery current consumption in flashlight mode. The ultra-compact ADP1650 measures just 2 mm x 1.5 mm and is packaged in a 12-pin WLCSP to reduce PCB (printed circuit board) requirements.
Jose Rodriguez, technical director of the ADI Power Management Technology Group, said that camera quality is one of the characteristics that consumers care about when choosing a mobile phone, because many camera phones are photographed by consumers at will, and their location may be dim. At the time, it may be talking on the phone, so consumers will expect a quality flash to assist photography.
The ADP1650 combines a programmable 1.5 MHz or 3.0 MHz synchronous inductive boost converter in a footprint of less than 17 mm2, a tiny, 1 mm high, low cost 1μH power inductor with some 0603 size input capacitors. And the output capacitors enable a complete high-power flash design. The new LED driver's operating efficiency over the full battery voltage range allows for more efficient conversion between input power and LED power, and minimizes battery current consumption during flash. The ADP1650 can be designed for limited battery current operation in flash circuits and is easily connected to the latest image sensors and image processors, providing superior shooting quality in low light conditions.
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