A4988 Stepper Motor Driver Carrier
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
This product ships with all surface-mount components—including the A4988 driver IC—installed as shown in the product picture.c gearmotors with 3mm D-shaft outputs.
Dimensions
| Size: | 0.6″ × 0.8″ |
|---|---|
| Weight: | 1.3 g1 |
General specifications
| Minimum operating voltage: | 8 V |
|---|---|
| Maximum operating voltage: | 35 V |
| Continuous current per phase: | 1 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:
- Without included optional headers.
- Without a heat sink or forced air flow.
- With sufficient additional cooling.
- Male header pins are included for the board's 16 holes, but they are not installed.
| N/A |
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