The A interface is an ideal fit for applications where a complex microprocessor is unavailable or is overburdened. An error occurred, please try again. We’ll notify you when there are updates to this product. Visit eBay’s page on international trade. Can you change the step resolution while running? These devices, as well as the entire Step and Direction family, can replace two or more devices in many designs, thereby reducing overall system cost. This will ensure that the 0.

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Bipolar Stepper Motor Drivers – Allegro MicroSystems

Select a valid country. If you go from a higher resolution mode to a lower resolution mode and do it at a position that is not a valid possibility for the lower resolution mode in table 2 of the datasheet, then the sequencer will advance to first possibility without actually changing the output currents.

If this is not your local representative, find your local sales rep here. For optimum electrical and thermal performance, the exposed pad on the underside of the device provides a path for enhanced thermal dissipation. R S is the sense resistor, 0.

The A offers motpr and half step modes, the A offers full, half, quarter, and eighth step modes, and the offers full, half, quarter, and sixteenth step modes. There are no news items available for this product.


This amount is subject to change until you make payment. Internal circuit protection includes: Using a reasonably smaller value for R S will dissipate less power in R S and provide headroom. Please note the delivery estimate is greater than 7 business days. This will ensure that the 0. Prices are indicative only and may vary by country, with changes in raw materials prices or exchange rates.

We’ll notify you when there are updates to this product. Get the item you ordered or get your money back. When a signal occurs mogor the STEP input pin, the A determines if that step results in a higher or lower current in each of the motor phases.

What is the best way to determine a value for R Sso as not to exceed 0. The sense resistors, R S xshould have a very low impedance path to ground, because they must carry a large current allegrp supporting very accurate voltage measurements by the current sense comparators. A ground plane area at least two times larger than the package outline is a good place to start. It should be mentioned that changing the MS x pins at any time will not cause damage to the device.

A3982: DMOS Stepper Motor Driver with Translator

Are there alleyro techniques to reduce the package power dissipation when running at high currents? The chopping control in the A automatically selects the current decay mode Slow or Mixed. Add to watch list. Simply inputting one pulse on the STEP input drives the motor one step.


Delivery times may vary, especially during peak periods. This would make keeping the motor at constant speed very tricky.

If the change is to a higher current, then the decay mode is set to Slow decay. Paypal onlyyou can use credit card through PayPal.

The schematic follows the traditional style of the Allegro products. For example, with direction low, if you changed from Eighth Step mode to Full Step mode when you were at Eighth Step 2, the translator will advance to Full Step 2 but not change the output currents. There are no phase sequence steppfr, high frequency control lines, or complex interfaces to program.

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