YB1521 driver equivalent, high power step-up dc-dc converter & wled driver.
2.5V to 5.5V Input Voltage Range Built In Power MOSFET Drive Up to 15V @400mA at 5V Vin Less than 1µA Shutdown Current Up to 94% efficiency Over Voltage Protection@18V UV.
for cellular phone backlighting or other hand held equipment. The wide input voltage range from 2.5V to 5.5V is idea for.
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