DRV8821

www.ti.com

SLVS912C – JANUARY 2009 – REVISED JANUARY 2010

DUAL STEPPER MOTOR CONTROLLER/DRIVER

Check for Samples: DRV8821

1

FEATURES

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Simple Step/Direction Interface

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Dual PWM microstepping motor driver

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Fully Protected Against Undervoltage,

Overtemperature, and Overcurrent

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Built-In Microstepping Indexers

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Thermally Enhanced Surface Mount Package

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Up to 1.5-A Current Per Winding

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Three-Bit Winding Current Control Allows

APPLICATIONS

up to Eight Current Levels

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Printers

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Low MOSFET On-Resistance

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Scanners

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Selectable Slow or Mixed Decay Modes

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Office Automation Machines

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8-V to 32-V Operating Supply Voltage Range

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Gaming Machines

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Internal Charge Pump for Gate Drive

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Factory Automation

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Built-in 3.3-V Reference

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Robotics

DESCRIPTION/ORDERING INFORMATION

The DRV8821 provides a dual microstepping-capable stepper motor controller/driver solution for printers,

scanners, and other office automation equipment applications.

Two independent stepper motor driver circuits include four H-bridge drivers and microstepping-capable indexer

logic. Each of the motor driver blocks employ N-channel power MOSFETs configured as an H-bridge to drive the

motor windings.

A simple step/direction interface allows easy interfacing to controller circuits. Pins allow configuration of the

motor in full-step, half-step, quarter-step, or eighth step modes, and the selection of slow or mixed decay modes.

Internal shutdown functions are provided for over current protection, short circuit protection, under voltage

lockout and overtemperature.

The DRV8821 is packaged in a 48-pin HTSSOP package (Eco-friendly : RoHS & no Sb/Br).

ORDERABLE PART NUMBER

TOP-SIDE MARKING

Reel of 2000

DRV8821DCAR

–40°C to 85°C

PowerPad™ (HTSSOP) - DCA

DRV8821

Tube of 40

DRV8821DCA

(1)

For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

web site at www.ti.com.

(2)

Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.

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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

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PowerPad, PowerPAD are trademarks of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 2009–2010, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.