MIC2141

The MIC2141 is a micropower boost switching regulator that can operate from 3- or 4-cell nickel-metal-hydride batteries or a single Li-Ion cell. This regulator employs a constant 330kHz, fixed 18% duty-cycle, gated-oscillator architecture.

The MIC2141 can be used in applications where the output voltage must be dynamically adjusted. The device features a control signal input which is used to proportionally adjust the output voltage. The control signal input has a gain of 6, allowing a 0.8V to 3.6V control signal to vary a 4.8V to 22V output.

The MIC2141 requires only three external components to operate and is available in a tiny 5-lead SOT-23 package for space and power-sensitive portable applications. The MIC2141 draws only 70µA of quiescent current and can operate with an efficiency exceeding 85%.

Features
  • Implements low-power boost, SEPIC, or flyback
  • 2.2V to 14V input voltage
  • 330kHz switching frequency
  • <2µA shutdown current
  • 70µA quiescent current
  • 1.24V bandgap reference
  • typical output current 1mA to 10mA
  • SOT-23-5 package
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) 14 14
Output Voltage Range Min (V) 2.8 2.8
Output Voltage Range Max (V) 22 22
Quiescent Current (mA) typ 0.07 0.07
Switching Frequency (kHz) 330 330
Operating Temp Range -40 to 85 -40 to 85
Vfb (V) 1.24 1.24
SHUTDOWN Current (µA) (Typ) 2 2
Switch current (A) typ 1 1
Alternative Topology SEPIC, Flyback SEPIC, Flyback
Documents
MIC2141 - Micropower Boost ConverterData Sheets11/05/2015842KB
RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
MIC2141YM5-TR0.0174000.0490005SOT-23-NiPdAue4
MIC2141 - Micropower Boost Converter MIC2141