CAT4237 - High Voltage CMOS Boost White LED Driver

Datasheet Summary

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 1 MHz allows the device to be used with small value external ceramic capacitors and inductor.

ON Semiconductor

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Datasheet Details

Part number	CAT4237
Manufacturer	ON Semiconductor
File Size	263.46 KB
Description	High Voltage CMOS Boost White LED Driver
Datasheet	CAT4237 Datasheet
Additional preview pages of the CAT4237 datasheet.

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CAT4237 High Voltage CMOS Boost White LED Driver 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 1 MHz allows the device to be used with small value external ceramic capacitors and inductor. LEDs connected in series are driven with a regulated current set by the external resistor R1. LED currents up to 40 mA can be supported over a wide range of input supply voltages from 2.8 V to 5.5 V, making the device ideal for battery−powered applications. The CAT4237 high−voltage output stage is perfect for driving six, seven or eight white LEDs in series with inherent current matching in LCD backlight applications.

Published: Oct 21, 2016 |