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GM1937

Part Number	GM1937
Manufacturer	Gamma
Description	WHITE LED STEP-UP CONVERTER
Published	Aug 7, 2013
Detailed Description	GM1937 WHITE LED STEP-UP CONVERTER Description The GM1937 is a step-up DC/DC converter specifically designed to drive w...
Datasheet	GM1937 PDF File

Overview

GM1937 WHITE LED STEP-UP CONVERTER Description The GM1937 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 for ballast resistors.
The output capacitor can be as small as 0.
22µF, saving space versus alternative solutions.
A low 95mV feedback voltage minimizes power loss for better Features High Efficiency: 84% Typical 36V internal Switch Fast 1.
2MHz Switching Frequency Drives Up to three LEDs from a 2.
8V Supply Drives Up to six LEDs from a 5V Supply External Matched LED Current Uses Tiny 1mm height inductor Requires Only 0.
22 ¡@ F Output Capacitor Low profile TSOT package Application Cellular Phones PDA, Handheld Computers Digital Cameras MPS3 Players GPS Receivers Typical Application Circuits VIN 3V to 5V 1µ F VIN 22µH 90 EFFI...

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