CAT3603 Datasheet (Catalyst Semiconductor)

CAT3603, 3-Channel LED Driver

The CAT3603 is a charge pump LED driver operating in either 1x (LDO) mode or 1.5x fractional mode regulating current through each of the 3 LED pins.

Operation at a constant switching frequency of 1MHz allows the use of very small value ceramic capacitors.

The CAT3603 drives 3 white LEDs in parallel

CAT3603 Features

* Drives up to 3 LEDs Current setting resistor Compatible with supply voltage of 3V to 5.5V Power efficiency up to 91% Output Current up to 30mA per LED Fractional pump 1x/1.5x Low n