LR256 White LED Step-Up Converter

LR256 is a step-up DC/DC converter specifically designed to drive white LED with a constant current. It can drive two,three,or four LEDS. It switches at 1.2MHz and use tiny external components. The output capacitor can be as small as 0.22uF,which can save space and cost versus alternative solutions. Feedback voltage is as low as 95mV.

➢ Fast 1.2MHz Switching Frequency
➢ Requires Only 0.22uF Output Capacitor
➢ Inherently Matched LED Current
➢ High Efficiency: 85% Typical
➢ 2.5V to 10V VIN ranges
➢ Drives Up to Four series LEDs with a Li-lon cell
➢ Uses Very Tiny Inductors
➢ SOT-25 Package