CAT4139 Datasheet 22v High Current Boost White Led Driver

Manufacturer: Catalyst Semiconductor

Overview: .. CAT4139 22V High Current Boost White LED Driver.

Datasheet Details

Part number	CAT4139
Manufacturer	Catalyst Semiconductor
File Size	307.30 KB
Description	22V High Current Boost White LED Driver
Datasheet	CAT4139_CatalystSemiconductor.pdf

The CAT4139 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.

Switch Current Limit 750mA Drives LED strings up to 22V 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 TSOT-23 5-Lead (1mm max height).

Brand Logo	Part Number	Description	Manufacturer
	CAT4139	22V High Current Boost White LED Driver	ON Semiconductor

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