MIC2250 Series

2A Isw Low EMI Boost Regulator w/Dithering

Catalog

2A Isw Low EMI Boost Regulator w/Dithering

Part	Voltage - Output (Max) [Max]	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Input (Max) [Max]	Output Type	Topology	Mounting Type	Function	Frequency - Switching [Max]	Package / Case	Voltage - Output (Min/Fixed)	Number of Outputs	Current - Output	Output Configuration	Voltage - Input (Min) [Min]	Supplier Device Package
Microchip Technology MIC2250YML-TR	32 V	125 ¯C	-40 °C	5.5 V	Adjustable	Boost	Surface Mount	Step-Up	2.5 MHz	8-MLFÛ 8-VFDFN Exposed Pad	1.24 V	1	2 A	Positive	2.5 V	8-MLFÛ (2x2)
Microchip Technology MIC2250-1YD5-TR	32 V	125 ¯C	-40 °C	5.5 V	Adjustable	Boost	Surface Mount	Step-Up	2.5 MHz	SOT-23-5 Thin TSOT-23-5	1.24 V	1	2 A	Positive	2.5 V
Microchip Technology MIC2250-2YD5-TR	32 V	125 ¯C	-40 °C	5.5 V	Adjustable	Boost	Surface Mount	Step-Up	2.5 MHz	SOT-23-5 Thin TSOT-23-5	1.24 V	1	2 A	Positive	2.5 V

Catalog

2A Isw Low EMI Boost Regulator w/Dithering

Key Features

• + Over 80% efficient for a 300:1 load range

• + 2.5V to 5.5V input voltage range

• + Output voltage adjustable to 32V

• + 52µA (typ) quiescent current

• + Constant peak current control reduces output ripple

• + EMI reduction circuitry

• + Stable with small ceramic capacitors

• + <1µA shutdown current

• + UVLO and thermal shutdown

• + 5-pin Thin SOT-23 package (MIC2250-1 and -2)

• + -40°C to +125°C junction temperature range

Description

The MIC2250 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 optimized 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 10dB 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 MIC2250's internal 34V/2A rated switch, allowing it to power large loads in a tiny footprint. The MIC2250-1 is available in a 5-pin Thin SOT-23 package with dithering disabled. While the MIC2250-2 is available in a 5-pin Thin SOT-23 package with dithering enabled.