MP6551

– 14V, 5A, H-BRIDGE MOTOR DRIVER

MP6551 Rev. 1.0

MonolithicPower.com

11

7/7/2021

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Over-current (OC) conditions are sensed on

both the high-side MOSFET (HS-FET) and LS-

FET, protecting the device from damage during

a short to GND, short to supply, or a short

across the motor winding.

Note that a sustained short circuit or OC fault

can result in excessive die temperature, which

may cause the device to go into thermal

shutdown.

Under-Voltage Lockout (UVLO) Protection

If the VIN drops below the under-voltage lockout

(UVLO) threshold, all circuitry is disabled and

the device’s internal logic is reset. Once VIN

rises above the UVLO threshold again, the

MP6551 resumes normal operation.

Thermal Shutdown

If the die temperature exceeds about 150°C, all

MOSFETs are disabled and nFAULT goes low.

Once the die temperature drops below about

135°C, the MP6551 resumes normal operation.