8 to 35 V

DRV8818

Stepper

Motor Driver

STEP

DIR

HOMEn

Controller

Protection

Step Size

M

2.5 A

2.5 A

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

Reference

Design

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.

DRV8818

SLVSAX9E – SEPTEMBER 2011 – REVISED JANUARY 2016

DRV8818 Stepper Motor Controller IC

1

1 Features

1

•

Pulse Width Modulation (PWM) Microstepping

Motor Driver

–

Built-In Microstepping Indexer

–

Up to 8 Microsteps/Step

–

Step and Direction Control

–

Programmable Mixed Decay, Blanking, and Off

Time

•

Up to 2.5-A Current Per Winding

•

Low 0.37-

•

8-V to 35-V Operating Supply Voltage Range

•

Pin to Pin Upgrade for DRV8811 With Lower

•

Thermally-Enhanced Surface Mount Package

•

Protection Features

–

VM Undervoltage Lockout (UVLO)

–

Overcurrent Protection (OCP)

–

Thermal Shutdown (TSD)

2 Applications

•

Printers

•

Textile Machinery

•

Positioning/Tracking

•

Factory Automation

•

Robotics

3 Description

The DRV8818 provides an integrated stepper motor

driver solution for printers, scanners, and other

automated equipment applications. The device has

two H-bridge drivers, as well as microstepping

indexer logic to control a stepper motor.

The output driver block for each consists of N-

channel power MOSFETs configured as full H-

bridges to drive the motor windings.

A simple STEP/DIRECTION interface allows easy

interfacing to controller circuits. The mode pins allow

for configuration of the motor in full-step, half-step,

quarter-step, or eighth-step modes. Decay mode and

PWM off time are programmable.

Internal shutdown functions are provided for over

current protection, short circuit protection, under-

voltage lockout and overtemperature.

The DRV8818 is packaged in a 28-pin HTSSOP

package with PowerPAD™.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

DRV8818

HTSSOP (28)

9.70 mm x 4.40 mm

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

the end of the datasheet.

Simplified Schematic