Stepper Motor Driver Module ULN2003 for 5V 4-phase 5 line 28BYJ-48 - Arduino Compatible

• A4988 is a complete microstepping motor driver with built-in translator for easy operation. This product 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.

• A4988 includes a fixed off-time current regulator, the regulator in slow or mixed decay modes.

• A4988 converter is the key to easy implementation. As long as the "step" input inputting one pulse drives the motor one microstep.

• There are no phase sequence tables, high-frequency control lines, or complex interfaces to program.

• A4988 interface is very suitable for complex microprocessor is unavailable or is overburdened.

• 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. Internal synchronous rectification control circuitry is provided to improve the pulse-width modulation (PWM) operation power consumption.

• Internal circuit protection includes thermal shutdown with hysteresis, under-voltage lockout (UVLO), and crossover-current protection. Special power sequencing.

• A4988 surface mount QFN package (ES), a size of 5 mm × 5 mm, nominal overall package height of 0.90 mm, with an exposed pad for enhanced thermal dissipation.

• This package is Pb (suffix-T), with 100% matte tin lead frame plating.

Specifcation: