Microchip Technology Inc

MIC4721

In Production

The Micrel MIC4721 is a high efficiency PWM buck (step-down) regulators that provides up to 1.5A of output current. The MIC4721 operates at 2MHz and has proprietary internal compensation that allows a closed loop bandwidth of over 200kHz.

The low on-resistance internal p-channel MOSFET of the MIC4721 allows efficiencies up to 94%, reduces external components count and eliminates the need for an expensive current sense resistor.

The MIC4721 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 low-dropout conditions.

The MIC4721 is available in the 10-pin MSOP package with a junction operating range from -40°C to +125°C.

 

    Features

        • 2.7V to 5.5V supply voltage
        • 2MHz PWM mode
        • Output current to 1.5A
        • Up to 94% efficiency
        • 100% maximum duty cycle
        • Adjustable output voltage option down to 1V
        • Ultra-fast transient response
        • Stable with a 1µH inductor and a 4.7µF output capacitor
        • Fully integrated 1.5A MOSFET switch
        • Micropower shutdown
        • Power Good pin
        • Thermal shutdown and current limit protection
        • Pb-free 10-pin MSOP package
        • -40°C to +125°C junction temperature range
    Parameter Name
    Value
    Regulator Type
    Step Down (Buck)
    # of Outputs
    1
    Input Voltage Range Min (V)
    2.7
    Input Voltage Range Max (V)
    5.5
    Output Voltage Range Min (V)
    1
    Output Voltage Range Max (V)
    5.5
    Output Current (A) max
    1500
    Quiescent Current (mA) typ
    0.57
    Switching Frequency (kHz)
    2000
    Operating Temp Range
    -40 to 125
    Vfb (V)
    1
    Duty Cycle Max (%)
    1
    SHUTDOWN Current (µA) (Typ)
    2
    Documentation
    Data Sheets
    11/05/2015
    814KB
    Pricing & Samples
    All pricing shown in USD only.
    Part Number
    Leads
    Package Type
    Temp Range
    Packing
    1+
    26+
    100+
    1000+
    5000+
    Buy
    Sample
    MIC4721YMM
    10
    MSOP
    -40C to +125C
    TUBE
    0.65
    0.54
    0.49
    0.48
    0.47
     
    MIC4721YMM-TR
    10
    MSOP
    -40C to +125C
    T/R
    0.65
    0.54
    0.49
    0.48
    0.47
     

    ** Device not available to purchase online. Please contact a sales office for pricing information.
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    Development Tools
    • Demo & Eval Boards
    • MIC4721YMM Evaluation Board ( MIC4721YMM-EV )

      MIC4721YMM

      The MIC4721 is a high efficiency PWM buck (step-down) regulator that provides up to 1.5A of output current. The MIC4721 operates at 2MHz and has proprietary internal compensation that allows a closed loop bandwidth of over 200kHz. The low on-resistance internal P-Channel MOSFET of the MIC4721 allows efficiencies up to 94%, reduces external component count and eliminates the need for an expensive...

    RoHS Information
    Part
    Number
    Device
    Weight
    Shipping
    Weight
    Lead
    Count
    Package
    Type
    Package
    Width
    Solder
    Composition
    JEDEC
    Indicator
    RoHS
     
    China
    EFUP
    MIC4721YMM-TR
    0.024500
    0.431180
    10
    MSOP
    3x3x1.0mm
    NiPdAu
    e4
    MIC4721YMM
    0.024500
    0.135600
    10
    MSOP
    3x3x1.0mm
    NiPdAu
    e4
    To see a complete listing of RoHS data for this device, please Click here
    Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.