Part Number : A4988
Function : DMOS Microstepping Driver with Translator and Overcurrent Protection
Package : QFN28-contact
Maker : Allegro MicroSystems
Pinouts : 
Description :
The A4988 is a complete microstepping motor driver with built-in translator for easy operation. It is
designed to operate bipolar stepper motors in full-, half-, quarter-, eighth-, and sixteenth-step modes, with an output drive capacity of up to 35 V and ±2 A. The A4988 includes a fixed off-time current regulator which has the ability to operate in Slow or Mixed decay modes.
Features :
1. Low Rds(on) outputs
2. Automatic current decay mode detection/selection
3. Mixed and slow current decay modes
4. Synchronous rectification for low power dissipation
5. Internal UVLO
6. Crossover-current protection
7. 3.3 and 5 V compatible logic supply
8. Thermal shutdown circuitry
9. Short-to-ground protection
Datasheet PDF Download : 
Others datasheet of same file : A-4988, A4988SETTR-T, A4988SETTR
