Description :
The A4988 is a microstepping bipolar stepper motor driver intended for use with microcontroller-based stepper motor control systems. It is capable of driving a bipolar stepper motor with up to 2 A per phase, and has a maximum voltage rating of 35 V. The driver supports five different stepping modes, including full-step, half-step, quarter-step, eighth-step, and sixteenth-step, allowing for precise control of the motor's position and speed. Additionally, the A4988 features built-in thermal protection, over-current protection, and under-voltage lockout, making it suitable for a wide range of applications. The driver is noted for its reliability, accuracy, and ease of use, making it a popular choice among hobbyists, DIY enthusiasts, and professionals alike.
Specification :
- Supply voltage: 8 - 35 V DC
- Output current: up to 2 A per phase (max)
- Microstep resolutions: full, half, quarter, eighth, and sixteenth steps
- 4-layer, 2 oz copper PCB for better heat dissipation
- Over-temperature thermal shutdown protection
- Adjustable current control via potentiometer
- Low RDS (ON) outputs for reduced power dissipation
- Compatible with 3.3V and 5V logic signals
- Dimensions: 20 mm x 15 mm x 9 mm