High Efficiency 7W Buck LED Driver in TSOT-23

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Catalyst Semiconductor has introduced the CAT4201 – a high efficiency 7W buck LED driver optimized for driving high brightness, 350mA LEDs at up to 94% efficiency, in a 5-lead TSOT-23 package.

The CAT4201 incorporates Catalyst’s patent pending switching control algorithm. This new architecture reduces system complexity, improves efficiency and allows an external RSET control resistor to preset a regulated LED current up to 350mA from supplies as high as 24V, to provide better inductor control and eliminate the need for a dedicated heat sink.

The CAT4201 offers a simpler and significantly smaller alternative to linear regulators for driving high brightness LEDs in step-down applications. Additionally, built-in load dump protection allows transients of 40V to be safely handled, fully optimizing the CAT4201 for automotive indicator and illumination lighting applications, including turn signal, brake and map reading lights.

 

FEATURES LED currents up to 350mA Single pin control and dimming functions Power efficiency up to 94% Drives up to 7 LEDs in series (24V systems) TSOT-23 5-lead package

APPLICATIONS General lighting Transportation lighting Signage

 

 

 

 

 Featured Products

Part Number		Description	Data Sheet	App. Notes
CAT4201TD-GT3		350mA High Efficiency Step Down LED Driver

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