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CAT4240 - 6 Watt Boost LED Driver

Description

The CAT4240 is a DC/DC step-up converter that delivers an accurate constant current ideal for driving LEDs.

Operation at a fixed switching frequency of 1MHz allows the device to be used with small value external ceramic capacitors and inductor.

Features

  • Switch Current Limit 750mA Drives High Voltage LED strings (38V) Up to 87% Efficiency Low Quiescent Ground Current 0.6mA 1MHz Fixed Frequency Low noise Operation Soft start “in-rush” current limiting Shutdown current less than 1μA Open LED Overvoltage Protection Automatic Shutdown at 1.9V (UVLO) Thermal overload protection Thin SOT23 5-Lead (1mm max height).

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Datasheet Details

Part number CAT4240
Manufacturer Catalyst Semiconductor
File Size 423.78 KB
Description 6 Watt Boost LED Driver
Datasheet download datasheet CAT4240 Datasheet

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Full PDF Text Transcription

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www.DataSheet4U.com CAT4240 6 Watt Boost LED Driver FEATURES „ „ „ „ „ „ „ „ „ „ „ Switch Current Limit 750mA Drives High Voltage LED strings (38V) Up to 87% Efficiency Low Quiescent Ground Current 0.6mA 1MHz Fixed Frequency Low noise Operation Soft start “in-rush” current limiting Shutdown current less than 1μA Open LED Overvoltage Protection Automatic Shutdown at 1.9V (UVLO) Thermal overload protection Thin SOT23 5-Lead (1mm max height) DESCRIPTION The CAT4240 is a DC/DC step-up converter that delivers an accurate constant current ideal for driving LEDs. Operation at a fixed switching frequency of 1MHz 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.
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