LM1937 - White LED Step-Up Converter
The LM1937 is a step-up DC/DC converter specifically designed to drive white LEDs with a constant current.
The device can drive two, three or four LEDs in series from a Li-Ion cell.
Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need
LM1937 Features
* Inherently Matched LED Current
* High Efficiency : 84% Typical
* Drives Up to 4 LEDs from a 3.2V Supply
* Drives Up to 6 LEDs from a 5V Supply
* Power Management IC
* 36V Rugged Bipolar Switch
* Fast 1.2MHz Switching Frequency
* Uses Tiny 1mm Tall Inductors
* Re
