MP1580 1.22-21V, 2A, 380KHz Step-Down Converter SOIC8
MP1580 1.22-21V, 2A, 380KHz Step-Down Converter SOIC8

MP1580 1.22-21V, 2A, 380KHz Step-Down Converter SOIC8

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pMPS MP1580 — Step-Down Converter, 1.22-21V input, 2 A output, SOIC8./p
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    MP1580 1.22-21V, 2A, 380KHz Step-Down Converter SOIC8

    The MPS MP1580 is a Step-Down Converter. It operates from a 1.22 V to 21 V input, is rated for 2 A and switches at 380 KHz. It is supplied in a SOIC8 package.

    The MP1580 is a monolithic step-down switch mode converter with a built in internal power MOSFET.

    Key Specifications

    Part NumberMP1580
    FunctionStep-Down Converter
    Input Voltage1.22 V to 21 V
    Current Rating2 A
    Switching Frequency380 KHz
    Peak Efficiency95%
    PackageSOIC8
    Ordering CodesMP1580

    Features

    • 2A Output Current
    • 0.18Ω Internal Power MOSFET Switch
    • Stable with Low ESR Output Ceramic Capacitors
    • Up to 95% Efficiency
    • 23μA Shutdown Mode
    • Fixed 380KHz Frequency
    • Thermal Shutdown
    • Cycle-by-Cycle Over Current Protection
    • Wide 4.75 to 25V Operating Input Range
    • Output Adjustable from 1.22V to 21V

    Typical Application Circuit

    MP1580 typical application circuit
    MP1580 typical application circuit, as published in the MPS datasheet.

    Applications

    • Distributed Power Systems
    • Battery Chargers
    • Pre-Regulator for Linear Regulators "MPS" and "The Future of Analog IC Technology" are Trademarks of Monolithic Power Systems, Inc.

    Design Notes

    • Size the inductor for the ripple current at the actual switching frequency, typically 30% of the DC load — not for the DC rating alone.
    • The hot loop from input capacitor through the switch to ground sets conducted EMI. Keep that copper area as small as the layout allows.
    • Output ripple is set by the capacitor ESR and its DC-bias derating; a 10 µF ceramic often behaves like 4 µF at the rated output voltage.
    • Route the feedback divider from the output capacitor terminals, away from the switch node.

    Common Questions

    What input voltage does the MP1580 support?
    1.22 V to 21 V. The rated output is 2 A.
    Which package and ordering codes apply to the MP1580?
    SOIC8; order codes include MP1580.
    What are the defining features of the MP1580?
    2A Output Current 0.18Ω Internal Power MOSFET Switch

    Shenzhen Gaorunxin Technology Co., Ltd

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