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1.5A Dual Bipolar Stepper Motor Driver with 1/8 Microstepping Indexer (Step/Dir Ctrl)


Package | PIN: DCA | 48
Temp: I (-40 to 85)
Carrier: Partial Tube
Qty Price
1-9 $4.63
10-24 $4.16
25-99 $3.89
100-249 $3.49
250-499 $3.25
500-749 $2.83
750-999 $2.45
1000+ $2.40


  • 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

Texas Instruments  DRV8821DCA

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).