UPC 736691391928

• A4988 is a complete micro stepping motor driver with built-in translator for easy operation
• There are no phase sequence tables, high frequency control lines, or complex interfaces to program
• Internal circuit protection includes: thermal shutdown with hysteresis, under voltage lockout (UVLO), and crossover-current protection. Special power sequencing
• Internal synchronous rectification control circuitry is provided to improve the pulse-width modulation (PWM) operation power consumption
• Note: Not include UNO R3.

A4988 driver is available in full, half, 1/4, 1/8 and 1/16 step modes operate bipolar stepper motors, output drive capacity of up to 35 V and ± 2 A. It includes a fixed off-time current regulator, the regulator in slow or mixed decay modes. A4988 converter is the key to the easy implementation. As long as the "step" input inputting one pulse drives the motor one micro step. In the micro-step operation, A4988 chopping control inside automatically selects the current decay mode (Slow or Mixed). In mixed decay mode, the device is initially set to a fixed downtime in some fast decay, then the rest of the slow decay downtime. Mixed decay current control scheme results in reduced audible motor noise, increased step accuracy, and reduced power consumption.

Specifications:

Scanning Accuracy: 0.5 mm

Board Size: 70 x 53 x 11mm / 2.75 x 2.08 x 0.43"

A4988 Driver: 

Compatible Input Voltage: 7-15V DC Thermal Shutdown Circuitry: Yes Crossover-current Protection: Yes Ground Fault Protection: Yes Load Short-circuit Protection: Yes Compatible Logic Supply: 3.3V and 5 V

Stepping: Full-step, half-step, 4 steps, 8 steps, 16 steps.

Package Includes:

1 x Board

1 x A4988 Driver

6 x Jumpers

1 x Heat Sink