STMicroelectronics, Stepper Motor Driver IC 24-Pin, TFQFPN

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 protection

• Operating 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