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, under voltage lockout and overtemperature.
The DRV8821 is packaged in a 48-pin HTSSOP package (Eco-friendly : RoHS & no Sb/Br).
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