A4988 Stepper Motor Driver Carrier, Black Edition

SKU : A4988SMDCBE

Overview

This product is a carrier board or breakout board for Allegro’s A4988 DMOS Microstepping Driver with Translator and Overcurrent Protection; we therefore recommend careful reading of the A4988 datasheet (380k pdf) before using this product. This stepper motor driver lets you control one bipolar stepper motor at up to 2 A output current per coil (see the Power Dissipation Considerations section below for more information). Here are some of the driver’s key features:

 - Simple step and direction control interface

 - Five different step resolutions: full-step, half-step, quarter-step, eighth-step, and sixteenth-step

 - Adjustable current control lets you set the maximum current output with a potentiometer, which lets you use voltages above your stepper motor’s rated voltage to achieve higher step rates

 - Intelligent chopping control that automatically selects the correct current decay mode (fast decay or slow decay)

 - Over-temperature thermal shutdown, under-voltage lockout, and crossover-current protection

 - Short-to-ground and shorted-load protection

 - 4-layer, 2 oz copper PCB for improved heat dissipation

 - Exposed solderable ground pad below the driver IC on the bottom of the PCB