22V High Current Boost White LED Driver

The CAT4139 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 current set by the external resistor R1. The CAT4139 is ideal for driving parallel strings of up to five white LEDs in series or up to 22V.
By Catalyst Semiconductor
CAT4139 's PackagesCAT4139 's pdf datasheet
CAT4139TD-GT3 SOT-23




CAT4139 Pinout, Pinouts
CAT4139 pinout,Pin out
This is one package pinout of CAT4139,If you need more pinouts please download CAT4139's pdf datasheet.

CAT4139 Application circuits
CAT4139 circuits
This is one application circuit of CAT4139,If you need more circuits,please download CAT4139's pdf datasheet.


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