CAT4240 Datasheet (Catalyst Semiconductor)

CAT4240, 6 Watt Boost LED Driver

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 cu

CAT4240 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