MIKROE-3545 STSPIN220 Click Mikroe MIKROE-3545 STSPIN220 Click is a stepper motor driver with the PWM current control and selectable micro stepping up to 256 micro steps. The STSPIN220 is based on the STSPIN220 low-voltage stepper motor driver. The device is optimized for battery-powered, low-voltage motor driving applications. The Mikroe click features the lowest standby current available on the market (max 80nA). The STSPIN220 is a high-efficiency motor driver with low ON resistance MOSFETs as the output stage. The device is housed in a small 3x3mm QFN package. The output stage implements the PWM current control with fixed OFF time and a full set of protection features. The device uses the step motor voltage ranging from 1.8V to 10V and current up to 1.3A per bridge.