Pololu A4988 StepStick Stepper Motortreiber Carrier, Black Edition

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 (1MB 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

This product ships with all surface-mount components?including the A4988 driver IC?installed as shown in the product picture.

Dimensions

• Size:0.6? × 0.8?
• Weight:1.5 g¹

General specifications

• Minimum operating voltage:8 V
• Maximum operating voltage:35 V
• Continuous current per phase:1.2 A²
• Maximum current per phase:2 A³
• Minimum logic voltage:3 V
• Maximum logic voltage:5.5 V
• Microstep resolutions:full, 1/2, 1/4, 1/8, and 1/16
• Reverse voltage protection?:N
• Bulk packaged?:N
• Header pins soldered?:N⁴

Notes:

1. Without included optional headers.

2. Without a heat sink or forced air flow.

3. With sufficient additional cooling.

4. Male header pins are included for the board's 16 holes, but they are not installed.