A4988 Stepper Motor Driver

A4988 Stepper Motor Driver

A4988 Motor Driver Controller:

• Features:

  • Adjustable current limiting
  • Over-current and over-temperature protection
  • Five different microstep resolutions (Full, 1/2, 1/4, 1/8, 1/16-step)
  • Simple step and direction control interface
  • Intelligent chopping control (Mixed decay)
  • Under-voltage lockout
  • Crossover-current protection

• Voltage Ratings:

  • Min. Operating Voltage: 8V
  • Max. Operating Voltage: 35V
  • Min. Logic Voltage: 3V
  • Max. Logic Voltage: 5.5V

• Current Ratings:

  • Continuous Current per Phase: 1A
  • Max. Current per Phase: 2A (with sufficient cooling)

• PCB Specifications:

  • 4-layer, 2 oz copper PCB for improved heat dissipation
  • Exposed solderable ground pad for additional cooling

• Dimensions:

  • A4988 Controller: 3 x 2 x 1 cm (L x W x H)

Aluminum Heat Sink:

• Features:
  • Helps prevent overheating of the A4988 controller
  • Absorbs heat quickly and promotes fast cooling
• Specifications:
  • Dimensions: 40 x 40 x 20 mm (L x W x H)
  • No. of Blades: 11
  • Material: Aluminum
  • Color: Silver