Microstepping DMOS Driver With Translator

The A3977 is a complete microstepping Motor Driver with builtin translator. It is designed to operate bipolar stepper motors in full-, half-, quarter-, and eighth-step modes, with output drive capability of 35 V and 2.5 A. The A3977 includes a fixed off-time current Regulator that has the ability to operate in slow-, fast-, or mixed-decay modes. This current-decay control scheme results in reduced audible motor noise, increased step accuracy, and reduced power dissipation.
The translator is the key to the easy implementation of the A3977. Simply inputting one pulse on the STEP input drives the motor one step (two Logic inputs determine if it is a full-, half-, quarter-, or eighth-step). There are no phase-sequence tables, high-frequency control lines, or complex Interfaces to program. The A3977 Interface is an ideal fit for applications where a complex Microprocessor is unavailable or over-burdened.
By Allegro MicroSystems, Inc.
A3977 's PackagesA3977 's pdf datasheet
A3977SED-T
A3977SEDTR-T
A3977SLP-T
A3977SLPTR-T
A3977KED-T
A3977KEDTR-T
A3977KLP-T
A3977KLPTR-T




A3977 Pinout, Pinouts
A3977 pinout,Pin out
This is one package pinout of A3977,If you need more pinouts please download A3977's pdf datasheet.

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A3977 Application Notes A3977 RoHS A3977 Circuits A3977 footprint
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