DRV8821DCAR Power Path Management IC Motor / Motion / Ignition Controllers & Drivers Dual Stepper Motor Controller/Drive

1 Features

• 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

  
  

2 Applications

• Printers

• Scanners

• Office Automation Machines

• Gaming Machines

• Factory Automation

• Robotics

3 Description

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).

Device Information