com CAT4238 High Efficiency 10 LED Boost Converter FEATURES „ „ „ „ „ „ „ „ „ „ „ Drives High Voltage LED strings (38V) Up to 87% Efficiency Low Quiescent Ground Current 0.
6mA Adjustable Output Current 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 CAT4238 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 capacitor...

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