Advanced 256 microsteps integrated motor driver with step-clock and direction interface


  • Operating voltage from 7 to 45 V
  • Maximum output current 1.5 Arms
  • Microstepping up to 1/256th of step
  • Full protection set

The STSPIN820 is a stepper motor driver which integrates, in a small QFN 4 x 4 mm package, both control logic and a low RDS(on) 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 and offers a complete set of protection features including overcurrent, overtemperature and short-circuit protection.

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  • RDS(on) HS + LS = 1 Ω typ.
  • Current control with programmable OFF time
  • Current sensing based on external shunt resistor
  • Non-dissipative overcurrent protection
  • Short-circuit protection
  • Undervoltage lockout
  • Thermal shutdown
  • Standby low consumption
  • 3D printers
  • Medical equipment
  • Industrial 2D printers
  • Textile and sewing machines
  • CCTV, security and dime cameras
  • ATM and cash handling machines
  • Office and home automation