DRV8821
www.ti.com
SLVS912E –JANUARY 2009–REVISED AUGUST 2010
DUAL STEPPER MOTOR CONTROLLER/DRIVER
Check for Samples: DRV8821
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FEATURES
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Simple Step/Direction Interface
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Dual PWM microstepping motor driver
Fully Protected Against Undervoltage,
Overtemperature, and Overcurrent
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Built-In Microstepping Indexers
Up to 1.5-A Current Per Winding
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Thermally Enhanced Surface Mount Package
Three-Bit Winding Current Control Allows
up to Eight Current Levels
APPLICATIONS
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Printers
Scanners
Office Automation Machines
Gaming Machines
Factory Automation
Robotics
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Low MOSFET On-Resistance
Selectable Slow or Mixed Decay Modes
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8-V to 32-V Operating Supply Voltage Range
Internal Charge Pump for Gate Drive
Built-in 3.3-V Reference
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).
ORDERING INFORMATION(1)
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PACKAGE(2)
ORDERABLE PART NUMBER
TOP-SIDE MARKING
Reel of 2000
Tube of 40
DRV8821DCAR
–40°C to 85°C
PowerPad™ (HTSSOP) - DCA
DRV8821
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.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2009–2010, Texas Instruments Incorporated