SP1937 Description
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;.
SP1937 Key Features
- 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 Shutdown Mode
- Internal Over Temperature and Current Limiting
- 36V Rugged Bipolar Switch
- Small Package SOT-23-5L & SOT-353