Designed for pulse-width-modulated (PWM) control of low-

voltage stepper motors and single and dual DC motors, the

AMT49702 is capable of output currents up to 1Aper channel

and operating voltages from 3.5 to 15 V.

The AMT49702 is an automotive-grade device and is tested

across extended temperature and voltage ranges to ensure

compliance in automotive or industrial applications.

TheAMT49702 has an internal fixed off-time PWM timer that

sets a peak current based on the selection of a current sense

resistor. An output fault flag is provided that notifies the user

of a TSD or overcurrent protection event.

The AMT49702 is supplied in a low-profile 16-lead TSSOP

(suffix “LP”) with exposed power tab for enhanced thermal

dissipation.

AMT49702-DS, Rev. 2

MCO-0000239

• AEC-Q100 Grade 1 qualified

• Wide, 3.5 to 15 V input voltage operating range

• Dual DMOS full-bridges: drive two DC motors or

one stepper motor

• Synchronous rectification for reduced power dissipation

• Low-current sleep mode

• Overcurrent protection

• Internal UVLO and thermal shutdown circuitry

• Integrated charge pump

Dual DMOS Full-Bridge Motor Driver

PACKAGE:

Figure 1: Typical Applications

Not to scale

AMT49702

FEATURES AND BENEFITS

DESCRIPTION

SENSE1

OUT1A

OUT1B

VBB

VCP

0.1 µF

3.5 to 15 V

IN2

CLK

IN3

IN4

FAULTn

IN1

SLEEPn

GND

Step

Motor

DC

Motor

SENSE2

OUT2A

OUT2B

DC

Motor

AMT49702

SENSE1

OUT1A

OUT1B

VBB

VCP

0.1 µF

3.5 to 15 V

IN2

CLK

IN3

IN4

FAULTn

IN1

SLEEPn

GND

SENSE2

OUT2A

OUT2B

AMT49702

16-lead TSSOP

(suffix LP)

September 12, 2018