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CAT4237

Part Number	CAT4237
Manufacturer	Catalyst Semiconductor
Description	High Voltage CMOS Boost White LED Driver
Published	Nov 25, 2006
Detailed Description	www.DataSheet4U.com CAT4237 High Voltage CMOS Boost White LED Driver Features • • • • • • • • • • • Drives 6 to 8 Whit...
Datasheet	CAT4237 PDF File

Overview

www.
DataSheet4U.
com CAT4237 High Voltage CMOS Boost White LED Driver Features • • • • • • • • • • • Drives 6 to 8 White LEDs in series from 3V Up to 87% Efficiency Low Quiescent Ground Current 0.
6mA Adjustable Output Current (up to 40mA) High Frequency 1MHz Operation High Voltage Power Switch Shutdown current less than 1µA Open LED low power mode Automatic Shutdown at 1.
9V (UVLO) Thermal shutdown protection Thin SOT23 5-Lead (1mm max height) Product Description The CAT4237 is a DC/DC step-up converter that delivers an accurate constant current ideal for driving LEDs.
Operation at a constant switching frequency of 1MHz allows the device to be used with small value external ceramic capacito...

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