STEP

Step Size

Decay Mode

8.2 to 45 V

M

+

±

DRV8824

1/32 µstep

Stepper Motor

Driver

1.6 A

1.6 A

DIR

nFAULT

STEP Input

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DRV8824

SLVSA06J – OCTOBER 2009 – REVISED JULY 2014

DRV8824 Stepper Motor Controller IC

1 Features

3 Description

The DRV8824 provides an integrated motor driver

1

•

PWM Microstepping Stepper Motor Driver

solution for printers, scanners, and other automated

–

Built-In Microstepping Indexer

equipment applications. The device has two H-bridge

–

Up to 1/32 Microstepping

drivers and a microstepping indexer, and is intended

to drive a bipolar stepper motor. The output driver

•

Multiple Decay Modes:

block

consists

of

N-channel

power

MOSFETs

–

Mixed Decay

configured as full H-bridges to drive the motor

–

Slow Decay

windings. The DRV8824 is capable of driving up to

1.6 A of current from each output (with proper

–

Fast Decay

heatsinking, at 24 V and 25°C).

•

8.2-V to 45-V Operating Supply Voltage Range

A simple STEP/DIR interface allows easy interfacing

•

1.6-A Maximum Drive Current at 24 V and

to controller circuits. Mode pins allow for configuration

of the motor in full-step up to 1/32-step modes. Decay

•

Simple STEP/DIR Interface

mode is configurable so that slow decay, fast decay,

•

Low-Current Sleep Mode

or mixed decay can be used. A low-power sleep

mode is provided which shuts down internal circuitry

•

Built-In 3.3-V Reference Output

to achieve very-low quiescent current draw. This

•

Small Package and Footprint

sleep mode can be set using a dedicated nSLEEP

•

Protection Features:

pin.

–

Overcurrent Protection (OCP)

Internal

shutdown

functions

are

provided

for

–

Thermal Shutdown (TSD)

overcurrent, short circuit, undervoltage lockout, and

over temperature. Fault conditions are indicated

–

VMx Undervoltage Lockout (UVLO)

through the nFAULT pin.

–

Fault Condition Indication Pin (nFAULT)

Device Information(1)

2 Applications

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

Automatic Teller Machines

HTSSOP (28)

9.70 mm × 6.40 mm

DRV8824

•

Money Handling Machines

QFN (28)

5.00 mm × 5.00 mm

•

Video Security Cameras

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

the end of the data sheet.

•

Printers

•

Scanners

•

Office Automation Machines

•

Gaming Machines

•

Factory Automation

•

Robotics

4 Simplified Schematic

Microstepping Current Waveform

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.