Targeting solid-state lighting and general illumination applications, the MIC3230/31/32 family of LED drivers has an operating input voltage range from 6 V to 45 V and is able to drive an output up to 70W. The MIC3230/31 has an adjustable operating frequency from 10 kHz to 1 MHz and the MIC3232 has a fixed frequency operation of 400 kHz. The MIC3231 features a dithering capability which can reduce EMI by up to 12 dB. All three products feature PWM dimming capability, an enable pin for low-power shutdown, overvoltage and overtemperature protection with undervoltage lockout.
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To see the Datasheet, visit: http://www.micrel.com/_PDF/mic3230.pdf