AP1521 converter equivalent, white led step-up converter.
- Inherently Matched LED Current - Drives Up to Four LEDs from a 3.2V Supply - Drives Up to Six LEDs from a 5V Supply - High Efficiency: 84% Typical - Fast 1MHz Switching.
- Cellular Phones - PDAs, Hand-held Computers - Digital Cameras - MP3 Players - GPS Receivers
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The AP1521 is a step-up DC/DC converter specifically designed to drive white LEDs with a constant current. The device can drive two, three or four LEDs in series from a Li-Ion cell. Series connection of the LEDs provides identical LED currents result.
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