DRV8821

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community DRV8821 SLVS912J – JANUARY 2009 – REVISED JANUARY 2016 DRV8821 Dual Stepper Motor Controller and Driver 1 Features 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 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 Hbridge 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 ar...