256 microstep integrated Motor Driver

The STSPIN820 is a stepper motor driver which integrates, in a small QFN 4 x 4 mm package, both control logic and a low RDSon power stage. The integrated controller implements a PWM current control with fixed OFF time and a microstepping resolution up to 1/256th of the step. The device can be forced into a low consumption state. The device offers a complete set of protection features including overcurrent, overtemperature and short-circuit protectionOperating voltage from 7 to 45 V Maximum output current 1.5 Arms RDSon HS + LS = 1 Ω typ. Microstepping up to 1/256th of step Current control with programmable OFF time Current sensing based on external shunt resistor Full protection set Non-dissipative overcurrent protection Short-circuit protection Undervoltage lockout Thermal shutdown Standby low consumption