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Datasheet Microchip 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


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    MIC2141 - Micropower Boost Converter
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    Micropower Boost Converter General Description Features The MIC2141 is a micropower boost switching regulator Implements low-power boost, SEPIC, or flyback
    that can operate from 3-or 4-cell nickel-metal-hydride 2.2V to 14V input voltage
    batteries or a single Li-ion cell. This regulator employs a 330kHz switching frequency
    constant 330kHz, fixed 18% duty-cycle, gated-oscillator <2µA shutdown current
    architecture. 70µA quiescent current
    The MIC2141 can be used in applications where the 1.24V bandgap reference
    output voltage must be dynamically adjusted. The device
    features a control signal input which is used to Typical output current 1mA to 10mA
    proportionally adjust the output voltage. The control signal SOT23-5 package
    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-pin SOT-23 package for LCD bias supply
    space and power-sensitive portable applications. The CCD digital camera supply
    MIC2141 draws only 70µA of quiescent current and can
    operate with an efficiency exceeding 85%.
    Data sheets and support documentation can be found on
    Micrel’s web site at:
    ___________________________________________________________________________________________________________ Typical Application
    Control Voltage
    vs. Output Voltage 10µH ...



Lifecycle StatusProduction (Appropriate for new designs but newer alternatives may exist)




Alternative TopologySEPIC, Flyback
Automotive QualNo
Input Voltage Range Max, V14
Input Voltage Range Min(V)2.5
Light Load Efficiency ModeNo
Operating Temperature Range, °C-40 to +85
Output Voltage Range Max, V22
Output Voltage Range Min, V2.8
Quiescent Current, mA) typ0.07
SHUTDOWN Current, µA2
Switch current, A) typ1
Switching Frequency, kHz330
Synchronous RectifierNo
Vfb, V1.24

Eco Plan


Moldel Line

Series: MIC2141 (1)

Manufacturer's Classification

  • Power Management > Switching Regulators > Step Up (Boost) - Non-Synchronous Products

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