MIC2251

The MIC2251 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 MIC2251 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 MIC2251 incorporates a pseudo-random dithering function to reduce EMI levels up to 10dB enabled by the DITH pin.

The MIC2251 is designed for use with inductor values from 4.7µH to 22µH, and is stable with ceramic capacitors from 1µF to 22µF.

The MIC2251 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 MIC2251's internal 40V/2A rated switch, allowing it to power large loads in a tiny footprint.

The MIC2251-1 is available in a 5-pin Thin SOT-23 package with dithering disabled. While the MIC2251-2 is available in a 5-pin Thin SOT-23 package with dithering enabled. The MIC2251 is available in a 8-pin 2mm x 2mm MLF® leadless package option with an operating junction temperature range of -40°C to +125°C.

Features
  • Over 80% efficient for a 300:1 load range
  • 2.5V to 5.5V input voltage range
  • Output voltage adjustable to 37V
  • 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
  • 8-pin 2mm x 2mm leadless MLF® package (MIC2251)
  • 5-pin Thin SOT-23 package (MIC2251-1 and -2)
  • -40°C to +125°C junction temperature range
Parameter
Parameter Name Value Value
Regulator Type Step Up (Boost) Step Up (Boost)
Input Voltage Range Min (V) 2.5 2.5
Input Voltage Range Max (V) 5.5 5.5
Output Voltage Range Min (V) 3 3
Output Voltage Range Max (V) 37 37
Quiescent Current (mA) typ 0.07 0.07
Operating Temp Range -40 to 125 -40 to 125
Vfb (V) 1.24 1.24
Duty Cycle Max (%) 87 87
SHUTDOWN Current (µA) (Typ) 0.1 0.1
Switch current (A) typ 2 2
Documents
MIC2251 - High-Efficiency Low EMI Boost RegulatorData Sheets11/05/2015869KB
Ordering Information
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
MIC2251-1YD5-TR5TSOT-40C to +125CT/R0.760.630.580.560.55
MIC2251-2YD5-TR5TSOT-40C to +125CT/R0.760.630.580.560.55
MIC2251YML-TR8VDFN-40C to +125CT/R0.840.700.640.610.61
RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
MIC2251-1YD5-TR0.0126000.1492005TSOT-NiPdAue4
MIC2251-2YD5-TR0.0126000.1492005TSOT-NiPdAue4
MIC2251YML-TR0.0109000.3392278VDFN2x2x0.9mmNiPdAue4
MIC2251 - High-Efficiency Low EMI Boost Regulator MIC2251
Products 产品服务
Manufacturers 生产厂家
Sales 联系购买
©1993 - 2024 BDTIC