5PCS 3D Printer A4988 Stepper Motor Driver Reprap + Self-adhensive Heatsink, US $460 – Picture 0

5PCS 3D Printer A4988 Stepper Motor Driver Reprap + Self-adhensive Heatsink, US $460 – Picture 1

5PCS 3D Printer A4988 Stepper Motor Driver Reprap + Self-adhensive Heatsink, US $460 – Picture 2

5pcs 3d Printer A4988 Stepper Motor Driver Reprap + Self-adhensive Heatsink

US $460

??, ???, China
Jun 9th

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3D Printer A4988 Stepper Motor Driver Reprap + Self-adhensive Heatsink Description: Good quality and brand new The A4988 is a complete microstepping motor driver with built-in converter, easy to operate. The products can be in full, half, 1/4, 1/8 and 1/16 step mode of operation bipolar stepper motor, output drive performance up to 35 V and ± 2 A. A4988 includes a fixed off time current regulator, the regulator can be in slow or mixed decay mode. The converter is the key to the easy implementation of the A4988. As long as the input of a pulse in the "step" in the input can be driven motor, microstep. There are no phase sequence tables, high frequency control interface programming or complex. The application of A4988 interface is very suitable for complex microprocessor is not available or overload. In the stepping operation, the chopping control in the A4988 automatically selects the current decay mode (slow or mixed). In mixed decay mode, the device is initially set to rapid degradation in the portion of the fixed off time, then the attenuation in the stop time slow the rest. Mixed decay current control scheme can reduce the audible motor noise, increased step accuracy, and reduced power consumption. Provide internal synchronous rectification control circuitry, in order to improve the pulse width modulation (PWM) power consumption during operation. Internal circuit protection includes: thermal shutdown with hysteresis, undervoltage lockout (UVLO) and crossover current protection. Don't need special power up sequencing. A4988 uses surface mount QFN package (ES), the size is 5 mm x 5 mm, nominal overall package height is 0.90 mm, with an exposed thermal pad to enhance heat dissipation function. The package is a lead-free package (suffix - T), with 100% matte tin leadframe plating. Function and advantages Low RDS (open) output Automatic current decay mode detection / choice Mixed with slow current decay mode The low power dissipation of synchronous rectifier Internal UVLO Crossover current protection 3.3 and 5 V compatible logic supply Thermal shutdown circuit Ground fault protection Loading and short circuit protection The optional five step mode: full, 1/2, 1/4, 1/8 and 1/16 Package include: 5pcs 3D Printer A4988 Stepper Motor Driver Reprap + Self-adhensive Heatsink Contact us: We have much more products, if you need or have any question ,please contact us first .We will try our best to serve .Welcome to wholesale and to be our parter. Thank you so much! Shipping: We Ship to Worldwide, but Italy Russia Nigeria, Brazil will take long delivery time . Before buying, Please make sure your address is correct. Or not, please correct it before payment Ship to worldwide from Hong Kong within 12-24 hours after payment completed received, and will give you the tracking number asap. sometimes we will send it by flat post air mail if just one low price order.Hope you understand. we advise shipping by DHL or EMS,and we have gave a discount for you,you can received it in 4-9 business days. it takes about 15-30days usually if shipping by CHina/Hong Kong post air mail Feedback: The feedback is very important for us.If you are satisfy with us,pleae leave five stars positive feeback,and welcome to our store again,we will supply the good items and service all the time.If you are not 100% satisfied,Please don't leave a neutral or negative but contact us First, we will do our best to solve the problem for you as soon as possible.

Condition:	New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller's listing for full details. ...	Brand	Unbranded/Generic
MPN	Does Not Apply
Model	A4988
Country/Region of Manufacture	China
UPC	does not apply