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.
The inductive driver drives up to 1,000 mA and can be used in single-LED flash or double-LED flash environments. The high-side current source works with up to 2×500 mA with two LEDs in serial configuration, and up to 720 mA with one LED. The AS3645 is available in a WL-CSP package and has an operating temperature range of –30° to 85°C. (Less than $0.90 ea/1,000 — available now.)
austriamicrosystems , Unetrremstaetten , Austria
US Sales Office 408-345-1790
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