MP8725 4.5-21V, 5A, 500kHz Synchronous Step-down Converter QFN3
MP8725 4.5-21V, 5A, 500kHz Synchronous Step-down Converter QFN3

MP8725 4.5-21V, 5A, 500kHz Synchronous Step-down Converter QFN3

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pMPS MP8725 — synchronous step-down converter, 4.5-21V input, 5A output, 500 kHz, QFN3./p
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    MP8725 4.5-21V, 5A, 500kHz Synchronous Step-down Converter QFN3

    MPS MP8725 is a synchronous step-down converter that accepts 4.5 V to 21 V input, delivers 5 A, switches at 500 kHz, supplied in a QFN3 package.

    Key Specifications

    Part NumberMP8725
    Input Voltage4.5 V to 21 V
    Output Current5 A
    Switching Frequency500 kHz
    TopologySynchronous Step-down Converter
    PackageQFN3
    Ordering CodesMP8725

    Features

    • Wide 4.5V to 21V Operating Input Range
    • 5A Output Current
    • Low RDS(ON) Internal Power MOSFETs
    • Proprietary Switching Loss Reduction Technique
    • Fixed 500kHz Switching Frequency
    • Sync from 300kHz to 2MHz External Clock
    • Internal Compensation
    • OCP Protection and Thermal Shutdown
    • Output Adjustable from 0.8V
    • Available in 14-pin QFN3x4 Package

    Typical Application Circuit

    MP8725 typical application circuit
    MP8725 typical application circuit, as published in the MPS datasheet.

    Applications

    • Notebook Systems and I/O Power
    • Networking Systems
    • Digital Set Top Boxes
    • Personal Video Recorders
    • Flat Panel Television and Monitors

    Design Notes

    • The step-down topology needs an inductor and output capacitor sized for the ripple at the switching frequency, not just the DC load.
    • Keep the input loop short — high di/dt at the switch node sets conducted EMI.
    • Power switches are integrated, so the thermal path is the PCB copper under the pad.
    • Package QFN3 — check the land pattern in the datasheet before layout.

    Common Questions

    What is the input and output rating of the MP8725?
    4.5–21 V input and 5 A output.
    What switching frequency does the MP8725 run at?
    500 kHz.
    Which package is the MP8725 available in?
    QFN3.

    Shenzhen Gaorunxin Technology Co., Ltd

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