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GM7620

Part Number	GM7620
Manufacturer	Gamma Microelectronics
Description	Fixed Frequency Step-up Dc-to-dc Converter
Published	Apr 25, 2008
Detailed Description	PRELIMINARY GM7620 FIXED FREQUENCY STEP-UP DC/DC CONVERTER www.DataSheet4U.com 1.2MHz Fixed Frequency Switching Inhe...
Datasheet	GM7620 PDF File

Overview

PRELIMINARY GM7620 FIXED FREQUENCY STEP-UP DC/DC CONVERTER www.
DataSheet4U.
com 1.
2MHz Fixed Frequency Switching Inherently Matched LED Current Adjustable Control of LED Current Drives Five White LEDs from 2V Drives Six White LEDs from 2.
7V Drives Eight White LEDs from 3V Disconnects LEDs In Shutdown Uses Tiny Ceramic Capacitors Uses Tiny 1mm-Tall Inductors Regulates Current Even When VIN > VOUT Operates with VIN as Low as 1V Up to 80% Efficiency The GM7620 is a fixed frequency step-up DC/DC converter designed to operate as a constant-current source.
Because it directly regulates output current, the GM7620 is ideal for driving light emitting diodes (LEDs) whose light intensity is proportional to the current passing through them, not the voltage across their terminals.
With an input voltage range of 1V to 10V, the device works from a variety of input sources.
The GM7620 accurately regulates LED current even when the input voltage is higher than the LED voltage, greatly simplifying b...

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