MP6551

14V, 5A, H-Bridge

Motor Driver

MP6551 Rev. 1.0

MonolithicPower.com

1

7/7/2021

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© 2021 MPS. All Rights Reserved.

DESCRIPTION

The MP6551 is an H-bridge motor driver. Its

2.5V to 14V input voltage (VIN) range allows the

device to operate from a variety of battery

power sources, including single-cell lithium-ion

batteries, dual-cell lithium-ion batteries, and 3-

cell to 6-cell alkaline batteries. Its low on

resistance enables it to achieve up to 5A of

output current (IOUT) across its entire VIN range.

The MP6551 can drive a brushed DC motor in

bidirectional applications or two DC motors in

unidirectional, speed-controlled applications.

Full protection features include over-current

protection

(OCP),

under-voltage

lockout

(UVLO) protection, and thermal shutdown.

The

MP6551

is

available

in

a

QFN-14

(2.5mmx3mm) package.

FEATURES

 2.5V to 14V Operating Input Range

 Up to 5A Output Current (I

OUT)

 Full H-Bridge or Dual Half H-Bridge Driver

 15mΩ Low On Resistance per MOSFET

 Current Measurement

 Over-Current Protection (OCP)

 Under-Voltage Lockout (UVLO) Protection

 Thermal Shutdown

 Sleep Mode during Low-Power

 Fault Indication Output

 Available in a QFN-14 (2.5mmx3mm)

Package

APPLICATIONS

 Mini Drones

 Battery-Powered Toys

All MPS parts are lead-free, halogen-free, and adhere to the RoHS

directive. For MPS green status, please visit the MPS website under

Quality Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are

trademarks of Monolithic Power Systems, Inc. or its subsidiaries.

TYPICAL APPLICATION

VIN

OUT1

OUT2

SR

IN1

EN1

VIN

MP6551

GND

µC

nFAULT

IN2

EN2

Drives 1x

bidirectional or 2x

unidirectional motors

CM1

CM2