LED Driver enables dual LED operation for camera flash.

Published June 29, 2009, 5:44 am, ThomasNet

Housed in 16-pin micro SMD package, PowerWise® LM3554 drives 1 or 2 high-current LEDs for flash applications in handheld devices. Fixed-frequency, step-up DC-DC converter with 2 regulated current sources is capable of driving loads up to 1.2 A from single-cell Li-Ion battery. Device drives LEDs in high-power flash mode for still photography or low-power torch mode for video conferencing. To ...

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