PST5405P is a 5-phase DC20–50V open-loop driver with 32-bit DSP control, offering low noise, high stability, and superior vibration performance. It features differential and optocoupler-isolated inputs, single/double pulse modes, 16-segment constant-torque microstepping (up to 51,200 steps), 8-level adjustable current (≤4.9A), and full protection.