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MP6519A 2.5-28V, 5A Full H-Bridge Current Regulator QFN-19
MP6519A 2.5-28V, 5A Full H-Bridge Current Regulator QFN-19

MP6519A 2.5-28V, 5A Full H-Bridge Current Regulator QFN-19

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pMPS MP6519A — Full H-Bridge Current Regulator, 2.5-28V input, 5 A output, QFN-19./p
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    MP6519A 2.5-28V, 5A Full H-Bridge Current Regulator QFN-19

    The MPS MP6519A is a Full H-Bridge Current Regulator. It operates from a 2.5 V to 28 V input and is rated for 5 A. It is supplied in a QFN-19 package.

    The MP6519A is a monolithic, step-down, current-source driver for applications that require accurate and fast current response control.

    Key Specifications

    Part NumberMP6519A
    FunctionFull H-Bridge Current Regulator
    Input Voltage2.5 V to 28 V
    Current Rating5 A
    InterfacePWM
    Peak Efficiency94%
    PackageQFN-19
    Ordering CodesMP6519A

    Features

    • Wide 2.5V to 28V Operating Input Voltage (VIN) Range
    • Up to 5A of Output Current (IOUT)
    • ± 2% Accuracy at Full-Scale Output Current (IOUT_FULL) Reference
    • 65mΩ On Resistance (RDS(ON)) for Each MOSFET of the H-Bridge
    • 100% Duty Cycle Operation of the H-Bridge
    • 30kHz to 300kHz Configurable Switching Frequency (fSW)
    • 20kHz to 100kHz Pulse-Width Modulation (PWM) Input for Current Regulation
    • Configurable IOUT_FULL
    • Up to 94% Efficiency
    • Selectable Current Polarity Mode

    Typical Application Circuit

    MP6519A typical application circuit
    MP6519A typical application circuit, as published in the MPS datasheet.

    Applications

    • Current Regulators
    • DC Motors

    Design Notes

    • Set dead time to match the external FET turn-off, not the datasheet typical. Too little risks shoot-through, too much distorts the current waveform at low duty cycle.
    • Use a Kelvin connection for the current-sense resistor; shared copper injects switching noise straight into the sense amplifier.
    • The thermal pad is the only heat path for most packages — via-stitch it to a ground plane with at least 9 vias.
    • PWM frequency trades switching loss against current ripple in the motor inductance; 20 kHz keeps the drive out of the audible band.
    • Add a brake or coast path so regeneration during a fast stop does not pump the supply rail.

    Common Questions

    What input voltage does the MP6519A support?
    2.5 V to 28 V. The rated output is 5 A.
    Which package and ordering codes apply to the MP6519A?
    QFN-19; order codes include MP6519A.
    What are the defining features of the MP6519A?
    Wide 2.5V to 28V Operating Input Voltage (VIN) Range Up to 5A of Output Current (IOUT)

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