CAT4137 - CMOS Boost Converter - White LED Driver

Datasheet Summary

Description

The CAT4137 is a DC/DC step-up converter that delivers a regulated output current.

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	CAT4137
Manufacturer	ON Semiconductor
File Size	164.57 KB
Description	CMOS Boost Converter - White LED Driver
Datasheet	CAT4137 Datasheet
Additional preview pages of the CAT4137 datasheet.

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CAT4137 CMOS Boost Converter White LED Driver Description The CAT4137 is a DC/DC step-up converter that delivers a regulated output current. Operation at a constant switching frequency of 1 MHz allows the device to be used with small value external ceramic capacitors and inductor. The device drives a string of white LEDs connected in series and provides the regulated current to control the LEDs with inherent uniform brightness and matching. An external resistor R1 sets the output current and allows up to 30 mA current to be supported over a wide range of input supply voltages from 2.2 V to 5.5 V, making the device ideal for battery-powered applications. LED dimming can be done by using a DC voltage, a logic signal, or a pulse width modulation (PWM) signal.

Published: Oct 21, 2016 |