A4988 Stepper Motor Driver

A4988 Stepper Motor Driver info

A4988 Stepper Motor Driver is a carrier board or breakout board for Allegro’s A4988 DMOS Microstepping Driver with current limiting and overcurrent protection. This stepper motor driver lets you control one bipolar stepper motor at up to 2 A output current per coil. The board has a simple step and direction control interface and five different step resolution which are 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.

A4988 Stepper Motor Driver - General Specifications

• Simple step and direction control interface
• Five different step resolutions
• Adjustable current control lets you set the maximum current output with a potentiometer
• 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

A4988 Stepper Motor Driver - Technical Specifications

• Minimum operating voltage: 8 V
• Maximum operating voltage: 35 V
• Continuous current per phase: 1 A
• Maximum current per phase: 2 A
• Minimum logic voltage: 3 V
• Maximum logic voltage: 5.5 V
• Microstep resolutions: 1, 1/2, 1/4, 1/8, 1/16
• Size: 0.6″ × 0.8″
• Weight: 1.3 g

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Documents

Allegro A4988 Stepper Motor Driver Datasheet