High Voltage CMOS Boost White LED Driver

The CAT4237 is a DC/DC Step-up converter that delivers an accurate constant current ideal for driving LEDs Operation at a constant 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. LED currents up to 40mA CAN be supported over a wide range of input supply voltages from 2.8V to 5.5V, making the device ideal for battery-powered applications. The CAT4237 High-Voltage output stage is perfect for driving six, seven or eight white LEDs in series with inherent current matching in LCD backlight applications.
By Catalyst Semiconductor
CAT4237 's PackagesCAT4237 's pdf datasheet
CAT4237TD-T3 SOT-23
CAT4237TD-GT3 SOT-23

CAT4237 Pinout, Pinouts
CAT4237 pinout,Pin out
This is one package pinout of CAT4237,If you need more pinouts please download CAT4237's pdf datasheet.

CAT4237 Application circuits
CAT4237 circuits
This is one application circuit of CAT4237,If you need more circuits,please download CAT4237's pdf datasheet.

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