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GM1937 - WHITE LED STEP-UP CONVERTER

Datasheet Summary

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.

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.

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Datasheet Details

Part number GM1937
Manufacturer Gamma
File Size 157.07 KB
Description WHITE LED STEP-UP CONVERTER
Datasheet download datasheet GM1937 Datasheet
Additional preview pages of the GM1937 datasheet.

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Full PDF Text Transcription

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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.
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