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

Features

  • Drives up to 5 White LEDs from 3V Power Efficiency up to 87% Low Quiescent Ground Current 0.1mA Adjustable Output Current (up to 30mA) High Frequency 1MHz Operation “Zero” current shutdown mode Operates down to 2V (from two AA batteries) Soft start power-up Open LED low power mode Automatic shutdown at 1.9V (UVLO) Thermal shutdown protection Thin SOT23 5-Lead (1mm max height).

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Datasheet Details

Part number CAT4137
Manufacturer Catalyst Semiconductor
File Size 328.03 KB
Description CMOS Boost Converter - White LED Driver
Datasheet download datasheet CAT4137 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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CAT4137 CMOS Boost Converter - White LED Driver Features • • • • • • • • • • • • Drives up to 5 White LEDs from 3V Power Efficiency up to 87% Low Quiescent Ground Current 0.1mA Adjustable Output Current (up to 30mA) High Frequency 1MHz Operation “Zero” current shutdown mode Operates down to 2V (from two AA batteries) Soft start power-up Open LED low power mode Automatic shutdown at 1.9V (UVLO) Thermal shutdown protection Thin SOT23 5-Lead (1mm max height) Product Description The CAT4137 is a DC/DC step-up converter that delivers a regulated output current. Operation at a constant switching frequency of 1MHz allows the device to be used with small value external ceramic capacitors and inductor.
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