The Microchip low EMI boost regulator is a general purpose DC/DC boost switching regulator that features low noise. EMI reduction circuitry, and high efficiency across a wide output-current range. The MIC2250 is optimised for noise-sensitive hand held battery powered applications. A proprietary control method allows low ripple across the output voltage and current ranges. The MIC2250 incorporates a pseudo-random dithering function to reduce EMI levels up to 10 dB enabled by the DITH pin. The MIC2250 is designed for use with inductor values from 4,7μH to 22μH, and is stable with ceramic capacitors from 1μF to 22μF. The MIC2250 attains a high peak efficiency up to 90% at 100mA and excellent light load efficiency of 80% at 1mA. High power density is achieved with the MIC 2250's internal 34V/2A rated switch, allowing it to power large loads in a tiny footprint. Operating voltage range 2.5V to 5.5V
Quiescent current 52μA
Constant peak current control reduces output ripple
Shutdown current 1μA
Over 80% efficient for a 3001 load range