★ 2-phase bipolar micro stepper motor driver. ★ Low profile, convenient operation. ★ Constant current control. ★ Reverse Polarity Protection Circuits. ★ Drive current 0.2A~2A. ★ Optional auto current drop. ★ Extreme low power consumption, high efficiency switch on/off. ★ Wide range signal input, and no need current limited resistance and switch. ★ 8 options of divisions .