Datasheet Summary
DC-DC Step-Up Converter for White LED
DESCRIPTION The SP1938 is a step-up DC/DC converter for white LED driver with over voltage protection. The device can driver one to four LEDs in series from a single cell Lithium Ion battery. Internal functions include current limiting; thermal shutdown; OVP and soft-start to prevent damage operate status. The SP1938 operates at 0.8MHz apply to Lithium-Ion powered systems. A low 95mV reference voltage minimizes power loss in the current setting resistor for better efficiency.
The SP1938 is available in small package SOT-23-6L.
APPLICATIONS
- Battery Power Equipment
- Notebook puters
- PDA
- Cellular Phone
Features
- Current Source with...