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MPQ4485-AEC1 6-36V, 6A Step-Down Converter QFN-26
MPQ4485-AEC1 6-36V, 6A Step-Down Converter QFN-26

MPQ4485-AEC1 6-36V, 6A Step-Down Converter QFN-26

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pMPS MPQ4485-AEC1 — Step-Down Converter, 6-36V input, 6 A output, QFN-26, AEC-Q100./p
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    AutomotiveAEC-Q100MPSStep-DownQFN-26Power Management ICs (PMIC)Converter
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    MPQ4485-AEC1 6-36V, 6A Step-Down Converter QFN-26

    The MPS MPQ4485-AEC1 is a Step-Down Converter. It operates from a 6 V to 36 V input, is rated for 6 A and switches at 450 kHz. It is supplied in a QFN-26 package. The part is AEC-Q100 qualified.

    The MPQ4485 integrates a monolithic, step- down, switch-mode converter with two USB current-limit switches and charging port identification circuitry.

    Key Specifications

    Part NumberMPQ4485-AEC1
    FunctionStep-Down Converter
    Input Voltage6 V to 36 V
    Output Voltage5.17 V
    Current Rating6 A
    Switching Frequency450 kHz
    PackageQFN-26
    QualificationAEC-Q100
    Ordering CodesMPQ4485-AEC1

    Features

    • Wide 6V to 36V Operating Input Voltage Range
    • Fixed 5.17V Output Voltage
    • 90mV Line Drop Compensation
    • Accurate USB1/USB2 Output Current Limit
    • 18mΩ/15mΩ Low RDS(ON) Internal Buck Power MOSFETs
    • 18mΩ/18mΩ Low RDS(ON) Internal USB1/USB2 Power MOSFETs
    • 450kHz Switching Frequency
    • Forced CCM Operation
    • Load Shedding versus Temperature for MPQ4485GU-LS-AEC1
    • USB Output Over-Voltage Protection (OVP)

    Typical Application Circuit

    MPQ4485-AEC1 typical application circuit
    MPQ4485-AEC1 typical application circuit, as published in the MPS datasheet.

    Applications

    • USB Charging Downstream Port (CDP)
    • USB Dedicated Charging Ports (DCP)

    Design Notes

    • Rail sequencing order and delay are part of the SoC power-up contract; a wrong order latches the processor even though every rail is in spec.
    • In multiphase designs, current balance depends on the loop matching between phases, so keep the layout symmetric.
    • Digital interfaces (PMBus, I²C) need pull-ups to the correct rail and a defined state during power-up.
    • Thermal design is a system problem here: the PMIC sits next to the load it feeds, so budget the shared copper, not the package alone.

    Common Questions

    What input voltage does the MPQ4485-AEC1 support?
    6 V to 36 V. The rated output is 6 A.
    Which package and ordering codes apply to the MPQ4485-AEC1?
    QFN-26; order codes include MPQ4485-AEC1.
    What are the defining features of the MPQ4485-AEC1?
    Wide 6V to 36V Operating Input Voltage Range Fixed 5.17V Output Voltage
    Is the MPQ4485-AEC1 qualified for automotive designs?
    Yes — it is AEC-Q100 qualified. Confirm the grade against the qualification summary in the datasheet before specifying it on a safety-related rail.

    Shenzhen Gaorunxin Technology Co., Ltd

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    Shenzhen Gaorunxin Technology Co., Ltd

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