The DMDU283 is a compact, integrated stepper‑motor driver developed by Leetro. It mounts directly on the rear of a stepper motor and supports two‑phase or four‑phase hybrid stepper motors, offering high performance at a low price. The driver uses a dual‑polarity constant‑current chopper technology, delivering higher power and reduced vibration and noise.
The manual covers product features, application ranges, operating environment, electrical and mechanical specifications, pin assignments, wiring diagrams, and safety precautions. It also provides guidance for setting subdivision numbers and output current, as well as matching motor parameters for optimal performance. This manual is written in Chinese.
| Maximum output current per phase | 2.0 A (peak) |
|---|---|
| Maximum subdivision | 64 (customizable) |
| Pulse response rate | up to 50 kHz |
| Supply voltage range | 18 V – 28 V DC |
| Logic input current | 6 – 50 mA |
| Dimensions (L×W×H) | 56 mm × 56 mm × 15 mm |
| Weight (without motor) | ≈ 15 g |
| Operating temperature range | -20 °C – +65 °C |
The driver can supply up to 2.0 A per phase (peak).
It operates from a DC supply of 18 V to 28 V.
The subdivision can be customized up to 64 steps.
The driver supports pulse frequencies up to 50 kHz.