Key facts
- Brand
- Allegro
- Model
- A3979
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-08-04
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Allegro A3979 DMOS Microstepping Driver Datasheet
The A3979 is a complete DMOS microstepping motor driver featuring an integrated translator. It operates bipolar stepper motors in full-, half-, quarter-, and sixteenth-step modes with output ratings of +2.5A and 35V. The device includes automatic current decay mode detection, synchronous rectification for low power dissipation, and internal protection circuitry such as thermal shutdown and UVLO.
Read onlineAllegro A3979 specifications
| Output current rating | +2.5 A, 35 V output rating |
|---|---|
| Logic supply voltage range | 3.0 to 5.5 V |
| Microstep Resolution | 1/16 step |
| Package type | 28 lead TSSOP |
| Operating Ambient Temperature | -20 to 85 °C |
All Allegro A3979 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the maximum output current rating of the A3979?
The device has an output rating of +2.5 A.
What microstep resolutions does the A3979 support?
The device supports full step, half step, quarter step, and sixteenth-step modes.
From: Allegro A3979 DMOS Microstepping Driver with Translator Datasheet
Is special power-on sequencing required?
No, special power-on sequencing is not required for this device.
From: Allegro A3979 DMOS Microstepping Driver with Translator Datasheet