Single/dual white LED flash driver improves picture quality in mobile phones

摘要

Suitable for mobile phones and digital still cameras, the AS3645 single/dual LED flash driver is claimed to offer 25% higher output current than existing equivalents. The higher flash power enhances picture and video quality especially in a low-light environment at the same system size. Its high-efficiency 2-MHz fixed-frequency dc/dc boost converter with soft start allows small inductors and enables easy integration into noise-sensitive RF systems.