ST2405S Digital Stepper Motor Driver 20-50VDC 1.0-6.0A

Description

The ST2405S is a DSP-driven two-phase (bipolar) stepper motor driver designed for compact to mid-range NEMA steppers (typically NEMA 17/23). Operating on 20–50 VDC, it delivers configurable peak output current up to 6.0 A via eight selectable levels. Features include PI-control algorithm for low noise, vibration, and heat, selectable micro-subdivision (16 positions), optically isolated single-/dual-pulse inputs, and active idle-current reduction, providing smooth and accurate motion performance.