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MP6508A 2.7-18V, 1.2A Bipolar Stepper Motor Driver in a QFN-16 (3mmx3mm) Package
MP6508A 2.7-18V, 1.2A Bipolar Stepper Motor Driver in a QFN-16 (3mmx3mm) Package

MP6508A 2.7-18V, 1.2A Bipolar Stepper Motor Driver in a QFN-16 (3mmx3mm) Package

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pMPS MP6508A — Bipolar Stepper Motor Driver in a QFN-16 (3mmx3mm) Package, 2.7-18V input, 1.2 A output, QFN-16./p
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    MP6508A 2.7-18V, 1.2A Bipolar Stepper Motor Driver in a QFN-16 (3mmx3mm) Package

    The MPS MP6508A is a Bipolar Stepper Motor Driver in a QFN-16 (3mmx3mm) Package. It operates from a 2.7 V to 18 V input and is rated for 1.2 A. It is supplied in a QFN-16 package.

    The MP6508A is a bipolar stepper motor driver with dual, built-in full-bridges consisting of N- channel power MOSFETs.

    Key Specifications

    Part NumberMP6508A
    FunctionBipolar Stepper Motor Driver in a QFN-16 (3mmx3mm) Package
    Input Voltage2.7 V to 18 V
    Current Rating1.2 A
    PackageQFN-16
    Ordering CodesMP6508A

    Features

    • Wide 2.7V to 18V Input Voltage (VIN) Range
    • Two Internal Full-Bridge Drivers
    • Low On Resistance (RDS(ON)): 250mΩ High- Side MOSFET (HS-FET) and Low-Side MOSFET (LS-FET)
    • Internal Charger Pump for the High-Side (HS) Driver
    • Low 1.6mA Quiescent Current (IQ)
    • Low 1µA Sleep Current
    • Over-Current Protection (OCP)
    • Thermal Shutdown and Under-Voltage Lockout (UVLO) Protection
    • Fault Indication Output
    • Thermally Enhanced Surface-Mount Package

    Typical Application Circuit

    MP6508A typical application circuit
    MP6508A typical application circuit, as published in the MPS datasheet.

    Applications

    • Point-of-Sale (POS) Printers
    • Video Security Cameras
    • Digital Still Cameras

    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 MP6508A support?
    2.7 V to 18 V. The rated output is 1.2 A.
    Which package and ordering codes apply to the MP6508A?
    QFN-16; order codes include MP6508A.
    What are the defining features of the MP6508A?
    Wide 2.7V to 18V Input Voltage (VIN) Range Two Internal Full-Bridge Drivers

    Shenzhen Gaorunxin Technology Co., Ltd

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    Shenzhen Gaorunxin Technology Co., Ltd

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