Datasheet Specifications
- Part number
- A3987
- Manufacturer
- Allegro MicroSystems
- File Size
- 1.00 MB
- Datasheet
- A3987_AllegroMicroSystems.pdf
- Description
- DMOS Microstepping Driver
Description
A3987 DMOS Microstepping Driver with Translator .
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 PACApplications
* 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 iA3987 Distributors
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