SDK03M is a dual-phase stepper motor unipolar driver IC from STMicroelectronics. Its features include: wide input voltage range, support 2-Phase/1-2 Phase Excitation, small control current, large drive current, short switching time, wide working temperature range, and low power consumption.
The document is a technical datasheet for the SDKO3M, a 2-Phase Stepper Motor Unipolar Driver IC. It details absolute maximum ratings, electrical characteristics, and pin descriptions. The chip supports both 2-phase and 1-2 phase excitation modes with active high or active low input signals.
| Motor supply voltage | 46 V |
|---|---|
| FET Drain-Source voltage | 100 V |
| Control supply voltage | 10 to 44 V |
| Output current | 1 A |
| Power dissipation (without heatsink) | 2.5 W |
| Channel temperature | +150 °C |
| Storage temperature | -40 to +150 °C |
The SDKO3M supports both 2-phase and 1-2 phase excitation modes.
Yes, the excitation input signals can be used as either Active High or Active Low, though the corresponding output changes depending on the input.
The recommended chopping OFF time is 12 microseconds when rs=47kΩ, C1=500pF, and Vb=5V.