General Description
The AF1937K is a step-up DC/DC converter
specifically designed to drive white LEDs with a
constant current. The device can drive up to 27
LEDs from a 5V supply. Additional feature include
output voltage limiting when LEDs are
disconnected.

Features

Inherently Matched LED Current

Drives Up to 27 LEDs from a 5V Supply

36V Rugged Bipolar Switch

Fast 1.2MHz Switching Frequency

VOUT(MAX)=30V

Application
Battery Power Equipment
Notebook Computers
PDA
Cellular Phone
Digital Cameras
MP3 Players

GPS Receivers