A3989 Description
The A3989 is designed operate at voltages up to 36 V while driving one bipolar stepper motor at currents up to 1.2A, and one DC motor at currents up to 2.4 A. The A3989 includes a fixed off-time pulsewidth modulation (PWM) regulator for current control.
A3989 Key Features
- 36 V output rating
- 2.4 A DC motor driver
- 1.2 A bipolar stepper driver
- Synchronous rectification
- Internal undervoltage lockout (UVLO)
- Thermal shutdown circuitry
- Crossover-current protection
- Very thin profile QFN package