Description
LR19 37S 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 273mV
OverVoltage, UVLO Function
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
TSOP-6
Manufacturer:LRC
Datasheet:LR1937S.pdf
