Alfa-MOS AF1937
The AF1937 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. The output capacitor can be as small as 0.22µF, saving space versus alternative solutions.| Part No. | AF1937 |
|---|---|
| Datasheet | AF1937 Download |
| Manufacturer |  Alfa-MOS |
| Description | White LED Step UP Converter |
| Buy | Stock & Price |
GENERAL DESCRIPTION
Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. A low 95mV feedback voltage minimizes power loss for better efficiency.FEATURES
Inherently Matched LED Current High Efficiency: 84% Typical Drives Up to Four LEDs from a 3.2V Supply Drives Up to Six LEDs from a 5V Supply 36V Rugged Bipolar Switch Fast 1.2MHz Switching Frequency Uses Tiny 1mm Tall Inductors Requires Only 0.22µF Output Capacitor Application Battery Power Equipment Notebook Computers PDA Cellular Phone Digital Cameras MP3 Players GPS Receivers Pin Define SOT-23-5L Marking Inform
