STSPIN220

Overview

The STSPIN220 is a low-voltage bipolar stepper motor driver integrating control logic and power MOSFETs in a 16-VFQFPN (3x3 mm) package. It supports a supply voltage range of 1.8 V to 10 V with a maximum output current of 1.3 A rms per half-bridge. The device features PWM current control with programmable off-time and microstepping resolution up to 1/256 step. Standby consumption is less than 80 nA, enabling extended battery life in portable applications.

Feature Summary

• Integrates control logic and low RDS(on) power stage for compact design
• Supports microstepping resolution up to 1/256th of a step for smooth motion
• Forces zero-consumption state to significantly extend battery life
• Includes non-dissipative overcurrent, short-circuit, and thermal shutdown protection

Applications

• Battery-powered portable devices
• Robotics systems
• Point-of-sale (POS) machines
• Portable printers
• Portable medical equipment

Procurement Notes

Verify the specific ordering suffix to confirm packaging type, such as tape and reel or cut tape, as these affect handling but not electrical function. Confirm the operating temperature range requirements match the -40°C to 150°C TJ specification. Ensure the host system voltage aligns with the 1.8 V to 10 V input range. Check for availability of evaluation boards like X-NUCLEO-IHM06A1 for initial prototyping.

Selection Notes

Select this component for applications requiring high precision microstepping in a minimal footprint. It is suitable for systems where low standby current is critical for battery longevity. The integrated controller reduces host MCU burden by handling PWM generation and current regulation. Ensure the load voltage does not exceed 10 V and that thermal management is adequate for continuous 1.3 A operation.

Part Context

Part of the STSPIN2 series of monolithic motor drivers designed for low-voltage applications. This series emphasizes energy efficiency and precise motion control in small packages. The STSPIN220 specifically targets bipolar stepper motors, offering a complete solution with integrated protection and diagnostic features for reliable operation in consumer and industrial environments.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.