The A4988 driver Stepper Motor Driver is a complete micro-stepping motor driver with a built-in converter. It operates from 8 V to 35 V and can deliver up to approximately 1 A per phase without a heat sink or forced air flow. The driver includes a fixed off-time current regulator and can be in slow or mixed decay mode. The chopping control in the A4988 automatically selects the current decay mode (slow or mixed) during stepping operation.
0.90 mm
QFN package (ES)
5 mm × 5 mm
Exposed thermal pad for heat dissipation