PST2405PU is a unipolar 2-phase pulse driver (DC20–50V, ≤4.5A) with 32-bit DSP control for low noise and stable performance. Offers 16-level microstep settings (up to 200), 400Kpps max pulse rate, smooth current control, differential 5–24V input, and full protection, ideal for NEMA17–24 stepper motors.