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