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DRV8821

SLVS912J – JANUARY 2009 – REVISED JANUARY 2016

DRV8821 Dual Stepper Motor Controller and Driver

1 Features

3 Description

The DRV8821 provides a dual microstepping-capable

1

•

Dual PWM Microstepping Motor Driver

stepper motor controller/driver solution for printers,

–

Built-In Microstepping Indexers

scanners, and other office automation equipment

–

Up to 1.5-A Current Per Winding

applications.

–

Three-Bit Winding Current Control Allows up to

Two independent stepper motor driver circuits include

Eight Current Levels

four H-bridge drivers and microstepping-capable

indexer logic. Each of the motor driver blocks employ

–

Low MOSFET On-Resistance

N-channel power MOSFETs configured as an H-

–

Selectable Slow or Mixed Decay Modes

bridge to drive the motor windings.

•

8-V to 32-V Operating Supply Voltage Range

A

simple

step/direction

interface

allows

easy

•

Internal Charge Pump for Gate Drive

interfacing

to

controller

circuits.

Pins

allow

•

Built-in 3.3-V Reference

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

•

Simple Step/Direction Interface

quarter-step, or eighth step modes, and the selection

of slow or mixed decay modes.

•

Fully Protected Against Undervoltage,

Overtemperature, and Overcurrent

Internal shutdown functions are provided for over

current

protection,

short-circuit

protection,

•

Thermally-Enhanced Surface Mount Package

undervoltage lockout, and overtemperature.

2 Applications

The DRV8821 is packaged in a 48-pin HTSSOP

package (Eco-friendly : RoHS & no Sb/Br).

•

Printers

•

Scanners

Device Information(1)

•

Office Automation Machines

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

Gaming Machines

DRV8821

HTSSOP (48)

6.10 mm x 12.50 mm

•

Factory Automation

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

the end of the datasheet.

•

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.