A3987 Datasheet - Allegro MicroSystems

A3987, DMOS Microstepping Driver

A3987 DMOS Microstepping Driver with Translator .
The A3987 is a complete microstepping motor driver with built-in translator for easy operation.

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Datasheet Details

Part number:

A3987

Manufacturer:

Allegro MicroSystems

File Size:

1.00 MB

Description:

DMOS Microstepping Driver

Features

* ▪ Low RDS(on) outputs ▪ Short-to-ground protection ▪ Shorted load protection ▪ Automatic current decay mode detection/selection ▪ Mixed and slow current decay modes ▪ Synchronous rectification for low power dissipation ▪ Internal UVLO and thermal shutdown circuitry ▪ Crossover-current protection PAC

Applications

* where a complex microprocessor is unavailable or over-burdened. The A3987 chopping control automatically selects the current decay mode (slow or mixed). When a STEP signal occurs, the translator determines if that step results in a higher or lower current in each of the motor phases. If the change i

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A3987 DMOS Microstepping Driver Allegro MicroSystems

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