Geekcreit® 3D Printer A4988 Reprap Stepping Stepper Motor Driver Module COD

Brand: Geekcreit

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ID: 88765
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                    Description:

                    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 the easy implementation. As long as the "step" input inputting one pulse drives the motor one microstep. A4988 interface is very suitable for complex microprocessor is unavailable and 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 m
                    sequenceotor 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, undervoltage 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 leadframe plating.

                    Feature:

                    Simple step and direction control interface
                    Short-to-ground and shorted-load protection
                    Five different step resolutions: full-step, half-step, quarter-step, eighth-step, and sixteenth-step
                    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
                    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

                    Package included:

                    1 x Step motor driver module
                    1 x Heatsink


                     


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