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Datasheet Microchip MIC4742YTSE

Part NumberMIC4742YTSE

The MIC4742 is a high efficiency dual PWM buck (step-down) regulator that provides dual 2A current output


  • Download » Datasheet PDF, 605 Kb, Revision: 11-05-2015
    MIC4742 Data Sheet
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    2 MHz Dual 2A Integrated Switch
    Buck Regulator General Description Features The Micrel MIC4742 is a high efficiency dual PWM buck
    (step-down) regulator that provides dual 2A current output.
    The MIC4742 operates at 2MHz. A proprietary internal
    compensation technique allows a closed loop bandwidth of
    over 200kHz. The low on-resistance internal P-Channel MOSFET of the
    MIC4742 allows efficiencies over 92%, reduces external
    components count and eliminates the need for an
    expensive current sense resistor.
    The MIC4742 operates from 2.9V to 5.5V input and the
    output can be adjusted down to 0.6V. The device can
    operate with a maximum duty cycle of 100% for use in lowdropout conditions.
    The MIC4742 is available in the exposed pad 16-pin
    3mm x 3mm MLFВ® and EPAD TSSOP-16 packages with a
    junction operating range from –40°C to +125°C.
    All support documentation can be found on Micrel’s web
    site at: 2.9 to 5.5V supply voltage
    2MHz PWM mode
    2A Dual output
    Greater than 92% efficiency
    100% maximum duty cycle
    Adjustable output voltage option down to 0.6V ...



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




# of Outputs2
Automotive RatedNo
Duty Cycle Max1 %
Input Voltage Range2.9 - 5.5 V
Light Load Efficiency ModeNo
Operating Temperature Range-40 to +125 °C
Output Current3000 mA) Max
Output Voltage Range0.6 - 5.5 V
Regulator TypeStep Down (Buck)
SHUTDOWN Current1.6 µA
Switching Frequency2000 kHz
Synchronous RectifierNo
Vfb0.6 V

Eco Plan


Moldel Line

Series: MIC4742 (3)

Manufacturer's Classification

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