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Product details

Number of full bridges 4 Vs (min) (V) 8 Vs ABS (max) (V) 34 Full-scale current (A) 1.5 Peak output current (A) 1.5 RDS(ON) (HS + LS) (mΩ) 550 Sleep current (µA) 20 Control mode STEP/DIR Control interface Hardware (GPIO) Microstepping levels 8 Features Current Regulation Rating Catalog Operating temperature range (°C) -40 to 85
Number of full bridges 4 Vs (min) (V) 8 Vs ABS (max) (V) 34 Full-scale current (A) 1.5 Peak output current (A) 1.5 RDS(ON) (HS + LS) (mΩ) 550 Sleep current (µA) 20 Control mode STEP/DIR Control interface Hardware (GPIO) Microstepping levels 8 Features Current Regulation Rating Catalog Operating temperature range (°C) -40 to 85
HTSSOP (DCA) 48 101.25 mm² 12.5 x 8.1
  • Dual PWM Microstepping Motor Driver
    • Built-In Microstepping Indexers
    • Up to 1.5-A Current Per Winding
    • Three-Bit Winding Current Control
      Allows up to Eight Current Levels
    • Low MOSFET On-Resistance
    • Selectable Slow or Mixed Decay Modes
  • 8-V to 32-V Operating Supply Voltage Range
  • Internal Charge Pump for Gate Drive
  • Built-in 3.3-V Reference
  • Simple Step/Direction Interface
  • Fully Protected Against Undervoltage,
    Overtemperature, and Overcurrent
  • Thermally-Enhanced Surface Mount Package
  • Dual PWM Microstepping Motor Driver
    • Built-In Microstepping Indexers
    • Up to 1.5-A Current Per Winding
    • Three-Bit Winding Current Control
      Allows up to Eight Current Levels
    • Low MOSFET On-Resistance
    • Selectable Slow or Mixed Decay Modes
  • 8-V to 32-V Operating Supply Voltage Range
  • Internal Charge Pump for Gate Drive
  • Built-in 3.3-V Reference
  • Simple Step/Direction Interface
  • Fully Protected Against Undervoltage,
    Overtemperature, and Overcurrent
  • Thermally-Enhanced Surface Mount Package

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, undervoltage lockout, and overtemperature.

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

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, undervoltage lockout, and overtemperature.

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

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Technical documentation

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Type Title Date
* Data sheet DRV8821 Dual Stepper Motor Controller and Driver datasheet (Rev. J) PDF | HTML 06 Jan 2016
Application note Best Practices for Board Layout of Motor Drivers (Rev. B) PDF | HTML 14 Oct 2021
Application note Calculating Power Dissipation for a H-Bridge or Half Bridge Driver (Rev. A) PDF | HTML 22 Jul 2021
Application note Current Recirculation and Decay Modes (Rev. A) PDF | HTML 20 Apr 2021
Application note Intelligent Stepper Motor Driver (Rev. B) PDF | HTML 20 Jan 2021
Application note Methods to Configure Current Regulation for Brushed and Stepper Motors (Rev. B) PDF | HTML 19 Jan 2021
Application note PowerPAD™ Thermally Enhanced Package (Rev. H) 06 Jul 2018
User guide DRV8821-23 EVM GUI (Rev. A) 26 Apr 2017
More literature TM4C123x Stepper Motor Control Product Summary 06 Jul 2015
Application note Understanding Motor Driver Current Ratings 06 Feb 2012
Application brief PowerPAD™ Made Easy (Rev. B) 12 May 2004

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

DRV8821EVM — DRV8821 Evaluation Module

The DRV8821 is a dual stepper motor controller evaluation module includes device, cabling and software to ease the evaluation of the device when driving a customer's motor.

User guide: PDF
Not available on TI.com
Package Pins Download
HTSSOP (DCA) 48 View options

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