SP1937 converter equivalent, dc-dc step-up converter.
* Fast 1.2MHz Switching Frequency
* High Efficiency up to 85%
* Drives up to seven LEDs From 2.5V Supply
* Low Quiescent Current
* Disconnects LEDs in.
* Battery Power Equipment
* Notebook Computers
* PDA
* Cellular Phone
* Digital Cameras
* MP3 Pl.
The SP1937 is a step-up DC/DC converter for white LED driver with constant current. The device can driver one to four LEDs in series from a single cell Lithium Ion battery. Internal functions include current limiting; thermal shutdown and soft-start .
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