Datasheet Specifications
- Part number
- A4988
- Manufacturer
- Allegro
- File Size
- 1.18 MB
- Datasheet
- A4988-Allegro.pdf
- Description
- DMOS Microstepping Driver
Description
A4988 DMOS Microstepping Driver with Translator and Overcurrent Protection .
Features
* ▪ Low Rds(on) outputs ▪ Automatic current decay mode detection/selection ▪ Mixed and slow current decay modes ▪ Synchronous rectification for low power dissipation ▪ Internal UVLO ▪ Crossover-current protection ▪ 3.3 and 5 V compatible logic supply ▪ Thermal shutdown circuitry ▪ Short-to-ground protApplications
* where a complex microprocessor is unavailable or is overburdened. During stepping operation, the chopping control in the A4988 automatically selects the current decay mode: slow or mixed. In mixed decay mode, the device is set initially to a fast decay for a proportion of the fixed off-time, then toA4988 Distributors
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