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Datasheet Microchip MIC4722


The MIC4722 is a high efficiency PWM buck (step-down) regulator that provides up to 3A of output current


  • Download » Datasheet PDF, 589 Kb, Revision: 11-05-2015
    MIC4722 Data Sheet
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    3mm x 3mm 2.7MHz 3A PWM Buck Regulator General Description Features The Micrel MIC4722 is a high efficiency PWM buck (stepdown) regulator that provides up to 3A of output current.
    The MIC4722 operates at 2.7MHz that makes it suitable
    for next generation XDSL modems requiring operating
    frequencies in excess of 2.4MHz and has proprietary
    internal compensation that allows a closed loop bandwidth
    of over 200KHz.
    The low on-resistance internal p-channel MOSFET of the
    MIC4722 allows efficiencies over 92%, reduces external
    components count and eliminates the need for an
    expensive current sense resistor.
    The MIC4722 operates from 2.7V to 5.5V input and the
    output can be adjusted down to 1V. The devices can
    operate with a maximum duty cycle of 100% for use in lowdropout conditions.
    The MIC4722 is available in the exposed pad 12-pin
    3mm x 3mm MLFВ® package with a junction operating
    range from –40°C to +125°C. 2.7 to 5.5V supply voltage
    2.7MHz PWM mode
    Output current to 3A
    >92% efficiency
    100% maximum duty cycle
    Adjustable output voltage option down to 1V
    Ultra-fast transient response ...



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




# of Outputs1
Automotive RatedNo
Duty Cycle Max, %1
Input Voltage Range, V2.7 - 5.5
Light Load Efficiency ModeNo
Operating Temperature Range, °C-40 to +125
Output Current, mA) Max3000
Output Voltage Range, V1 - 5.5
Quiescent Current, mA) type0.57
Regulator TypeStep Down (Buck)
SHUTDOWN Current, µA2
Switching Frequency, kHz2700
Synchronous RectifierNo
Vfb, V1

Eco Plan


Moldel Line

Series: MIC4722 (1)

Manufacturer's Classification

  • Power Management > Switching Regulators > Step Down up to 6V

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