MP6508

2.7V-to-18V, 1.2A, Bipolar Stepper Motor

Driver with Integrated MOSFETs

MP6508 Rev.1.0

www.MonolithicPower.com

1

6/27/2017

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2017 MPS. All Rights Reserved.

DESCRIPTION

The MP6508 is a bipolar stepper-motor driver

with dual, built-in full-bridges consisting of N-

channel power MOSFETs.

It operates from a supply voltage ranging from

2.7V to 18V and can deliver motor current up

to 1.2A per channel. The Internal safety

features include over-current protection(OCP),

under-voltage lockout protection(UVLO) and

thermal shutdown. A fault output flag is

available

to

indicate

OCP

and

thermal

shutdown.

The

MP6508

comes

in

both

16-pin,

5.0mmx6.4mm

TSSOP-EP

and

4mmx4mm

QFN package with an exposed thermal pad on

the backside.

FEATURES

 Wide 2.7V to 18V Input Voltage Range

 Two Internal Full Bridge Drivers

 Low On Resistance(HS:250mΩ; LS:250mΩ)

 Internal Charger Pump for the High-Side

Driver

 Low Quiescent Current:1.6mA

 Low Sleep Current: 1uA

 Over-Current Protection

 Thermal Shutdown and UVLO Protection

 Fault Indication Output

 Thermally-Enhanced Surface-Mount

Package

APPLICATIONS

 POS Printers

 Video Security Camera

 Digital Still Cameras

 Battery Powered Toys

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

MPS green status, please visit MPS website under Quality Assurance.

“MPS”

and “The Future of Analog IC Technology” are Registered Trademarks of

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

Motor

BST

VIN

AOUT1

AOUT2

BOUT1

BOUT2

Fault

VDD

MP6508

SENA

WindingA

SENB

C1

C2

C3

OFF

ON

GND

FAULT

BIN2

AIN1

AIN2

BIN1

0.1uF

10uF

2.2uF

nSLEEP

Motor

BST

VIN

AOUT1

AOUT2

BOUT1

BOUT2

Fault

VDD

MP6508

SENA

SENB

C1

C2

C3

OFF

ON

GND

FAULT

BIN2

AIN1

AIN2

BIN1

0.1uF

10uF

2.2uF

nSLEEP

Motor

Stepper Motor Application

Dual DC Motor Application