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Datasheet Microchip MIC2177-5.0YWM

Part NumberMIC2177-5.0YWM

The MIC2177 is a 200kHz synchronous buck (step-down) switching regulator designed for high-efficiency, battery-powered applications


  • Download » Datasheet PDF, 224 Kb, Revision: 11-05-2015
    MIC2177 - 2.5A Synchronous Buck Regulator
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    2.5A Synchronous Buck Regulator General Description Features The Micrel MIC2177 is a 200kHz synchronous buck (stepdown) switching regulator designed for high-efficiency,
    battery-powered applications.
    The MIC2177 operates from a 4.5V to 16.5V input and
    features internal power MOSFETs that can supply up to 2.5A
    output current. It can operate with a maximum duty cycle of
    100% for use in low-dropout conditions. It also features a
    shutdown mode that reduces quiescent current to less than
    The MIC2177 achieves high efficiency over a wide output
    current range by switching between PWM and skip mode.
    Operating mode is automatically selected according to output
    conditions. Switching frequency is preset to 200kHz and can
    be synchronized to an external clock signal of up to 300kHz.
    The MIC2177 uses current-mode control with internal current
    sensing. Current-mode control provides superior line
    regulation and makes the regulator control loop easy to
    compensate. The output is protected with pulse-by-pulse
    current limiting and thermal shutdown. Undervoltage lockout
    turns the output off when the input voltage is less than 4.5V.
    The MIC2177 is packaged in a 20-pin wide power SO
    package with an operating temperature range of –40°C to
    +85В°C. ...



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




# of Outputs1
Automotive RatedNo
Duty Cycle Max1 %
Input Voltage Range4.5 - 16.5 V
Light Load Efficiency ModeYes
Operating Temperature Range-40 to +85 °C
Output Current2500 mA) Max
Output Voltage Range1.245 - 16.5 V
Quiescent Current0.5 mA) type
Regulator TypeStep Down (Buck)
SHUTDOWN Current1 µA
Switching Frequency200 kHz
Synchronous RectifierYes
Vfb1.245 V

Eco Plan


Moldel Line

Series: MIC2177 (6)

Manufacturer's Classification

  • Power Management > Switching Regulators > Step Down up to 36V

Other Names:

MIC21775.0YWM, MIC2177 5.0YWM

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