The STSPIN220 is a stepper motor driver which integrates, in a small QFN 3 x 3 mm package, both control logic and a low RDS(on) power stage. The integrated controller implements PWM current control with fixed OFF time and a microstepping resolution up to 1/256th of a step. The device is designed to operate in battery-powered scenarios and can be forced into a zero-consumption state, allowing a significant increase in battery life. The device offers a complete set of protection features including overcurrent, overtemperature and short-circuit protection

Operating voltage:from 1.8 to 10 V
Maximum output current:1.3 Arms
RDS(on) HS + LS = 0.4 Ω typ
Microstepping up to 1/256th of a step
Current control with programmable off-time
Full protection set
Non-dissipative overcurrent protection
Short-circuit protection
Thermal shutdown
Energy saving and long battery life with standby consumption less than 80 nA