KAB3405T is a high efficient Step-Up Type DC/DC Converter specially designed for constant current drive of White LED.
This IC can drive 2-10 white LEDs connected series using a Li-ion Battery.
This IC contains N-ch MOS-FET Transistor for Coil-Switching, and LED Current (IF) is set with an external resistor.

Features
* Variable LED Current IF is set with a external resistor : 20 mA (Typ.) @ RSENS = 15
* High Efficiency
* Output Over Voltage Shutdown
* Built in output over voltage protect circuit.
* Switching Frequency : 1.0 MHz (Typ.)

Applications
* Back light white LEDs in LCD of PDA, Cellular Phone
* Handy Terminal Equipment.

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