Datasheet Details
| Part number | A4989 |
|---|---|
| Manufacturer | Allegro |
| File Size | 1.07 MB |
| Description | Dual Full-Bridge MOSFET Driver |
| Datasheet |
 A4989 Datasheet
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General Description
The A4989 is a dual full-bridge gate driver with integrated microstepping translator suitable for driving a wide range of higher power industrial bipolar two-phase stepper motors (typically 30 to 500 W).
Motor power is provided by external N-channel power MOSFETs at supply voltages from 12 to 50 V.
Key Features
- 2-wire step and direction interface.
- Dual full-bridge gate drive for N-channel MOSFETs.
- Operation over 12 to 50 V supply voltage range.
- Synchronous rectification.
- Cross-conduction protection.
- Adjustable mixed decay.
- Integrated sinusoidal DAC current reference.
- Fixed off-time PWM current control.
- Enhanced low current control when microstepping.
- Pin compatible with the A3986.