8.2 to 45 V

Decay Mode

nFAULT

Controller

DRV8843

Dual

H-Bridge

Motor Driver

Protection

Current Level

2.5 A

2.5 A

PWM

Product

Folder

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DRV8843

SLVSAS8D – APRIL 2011 – REVISED NOVEMBER 2015

DRV8843 Dual H-Bridge Driver

1 Features

3 Description

The DRV8843 provides an integrated dual H-bridge

1

•

Dual H-Bridge Motor Driver

motor driver solution for printers, scanners, and other

–

Single/Dual Brushed DC

automated equipment applications. The device can

–

Stepper

be used to drive one or two brushed DC motors, a

bipolar stepper motor, or other loads. A simple PWM

•

IN/IN Control Interface

interface allows easy interfacing to controller circuits.

•

Optional Fixed Frequency Current Regulation

The output driver block consists of N-channel power

–

Two Bit Current control Allows Up to Four

MOSFETs configured as H-bridges. The DRV8843 an

Current Levels

supply up to 2.5-A peak or 1.75-A RMS output

•

Low MOSFET On-Resistance

current (with proper heat sinking at 24 V and

–

2.5-A Maximum Drive Current at 24 V

TA = 25°C) per H-bridge.

A low-power sleep mode is provided which shuts

–

Combined 400 m

down internal circuitry to achieve very low quiescent

current draw. This sleep mode can be set using a

dedicated nSLEEP pin.

•

8.2-V to 45-V Operating Supply Voltage Range

•

Low Current Sleep Mode

Internal

protection

features

are

provided

for

overtemperature,

overcurrent,

and

undervoltage.

•

Built-In 3.3-V Reference Output

Fault conditions are indicated by a nFAULT pin.

•

Thermally Enhanced Surface Mount Package

•

Protection Features

Device Information(1)

–

Overcurrent Protection (OCP)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

DRV8843

HTSSOP (28)

9.70 mm × 4.40 mm

–

Thermal Shutdown (TSD)

–

Undervoltage Lockout (UVLO)

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

the end of the datasheet.

–

Fault Condition Indication Pin (nFAULT)

2 Applications

•

Printers

•

Scanners

•

Office Automation Machines

•

Gaming Machines

•

Factory Automation

•

Robotics

Simplified Schematic

1

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.