IN1

IN2

Controller

6.8 to 45 V

Brushed DC

Motor Driver

3.6 A

BDC

ISEN

nFAULT

Current

Regulation

Fault

Protection and

Reporting

DRV8872-Q1

Copyright © 2016, Texas Instruments Incorporated

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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

DRV8872-Q1

SLIS175 – NOVEMBER 2016

DRV8872-Q1 Automotive 3.6-A Brushed DC Motor Driver With Fault Reporting

1

1 Features

1

•

AEC-Q100 Qualified for Automotive Applications:

–

Device Temperature Grade 1: –40°C to

+125°C Ambient Operating Temperature

Range

–

Device HBM ESD Classification Level 2

–

Device CDM ESD Classification Level C4B

•

H-Bridge Motor Driver

–

Drives One DC Motor, One Winding of a

Stepper Motor, or Other Loads

•

Wide 6.8-V to 45-V Operating Voltage

•

•

3.6-A Peak Current Drive

•

PWM Control Interface

•

Integrated Current Regulation

•

Low-Power Sleep Mode

•

Fault Status Output Pin

•

Small Package and Footprint

–

8-Pin HSOP With PowerPAD™

–

4.9 × 6 mm

•

Integrated Protection Features

–

VM Undervoltage Lockout (UVLO)

–

Overcurrent Protection (OCP)

–

Thermal Shutdown (TSD)

–

Fault Reporting (nFAULT)

–

Automatic Fault Recovery

2 Applications

•

Automotive Infotainment

•

HUD Projector Adjustment

•

Motorized Shifter Knobs

•

Piezo Horn Driver

3 Description

The DRV8872-Q1 device is a brushed DC (BDC)

motor

driver

for

infotainment,

HUD

projector

adjustment, motorized shifter knobs, and piezo horn

drivers. Two logic inputs control the H-bridge driver,

which consists of four N-channel MOSFETs that

provide bidirectional control of motors up to 3.6-A

peak

current.

The

inputs

can

be

pulse-width

modulated (PWM) to control motor speed, using a

choice of current-decay modes. Setting both inputs

low enters a low-power sleep mode.

The DRV8872-Q1 device features integrated current

regulation, based on an internal reference voltage

and the voltage on the ISEN pin, which is proportional

to motor current through an external sense resistor.

The ability to limit current to a known level can

significantly reduce the system power requirements

and bulk capacitance needed to maintain stable

voltage,

especially

for

motor

startup

and

stall

conditions.

The device is fully protected from faults and short

circuits,

including

undervoltage

lockout

(UVLO),

overcurrent protection (OCP), and thermal shutdown

(TSD). Faults are communicated by pulling the

nFAULT output low. When the fault condition is

removed, the device automatically resumes normal

operation.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

DRV8872-Q1

HSOP (8)

4.90 mm × 6.00 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Simplified Schematic

H-Bridge States