STSPIN840

Overview

The STSPIN840 is a compact dual brushed DC motor driver capable of simultaneously driving two bidirectional motors. It integrates control logic and a fully protected low RDSon dual full-bridge power stage within a 24-TQFPN (4x4 mm) package. Operating on a supply voltage range of 7V to 45V, it delivers a maximum output current of 1.5 Arms per bridge. The device features two independent PWM current controllers with adjustable OFF times and supports a parallel mode that combines bridges into a single high-current configuration. It includes comprehensive protection mechanisms such as non-dissipative overcurrent, short-circuit, undervoltage lockout, and thermal shutdown.

Feature Summary

• Integrates dual full-bridge power stages with embedded control logic in a compact QFN package
• Features two independent PWM current controllers based on user-settable reference voltage and OFF time values
• Supports parallel operation mode to combine bridges for higher current capability and lower equivalent resistance
• Includes complete set of power stage protections including non-dissipative overcurrent, thermal shutdown, and undervoltage lockout

Applications

• Thermal printers
• Robotics systems
• Toys
• Industrial applications requiring rugged motor control

Procurement Notes

Verify the specific ordering suffix to confirm packaging type, such as tape and reel or cut tape, as these affect handling procedures. Confirm the component status is active before finalizing design-in decisions. Ensure compatibility with the intended STM32 Nucleo or Arduino UNO R3 connector interfaces if using expansion boards. Check for any recent product change notices regarding manufacturing reshaping or assembly updates.

Selection Notes

Select this component when space-constrained designs require driving two bidirectional brushed DC motors from a single IC. Consider the parallel mode feature if higher current capacity is needed without increasing board footprint. Evaluate the operating temperature range of -40°C to 150°C against environmental conditions. Verify that the 7V to 45V supply range matches the system power architecture.

Part Context

The STSPIN840 belongs to the STSPIN series of brushed DC motor drivers from STMicroelectronics. This family focuses on integrating control kernels and power stages to simplify motion control design. The device is part of a broader ecosystem that includes evaluation hardware like the X-NUCLEO-IHM15A1 expansion board and software packages such as X-CUBE-SPN15 for STM32Cube integration.

Replacement Considerations

The STSPIN240 is a related low-voltage dual brushed DC motor driver within the same family. Designers should verify voltage and current specifications when considering substitutes, as the STSPIN240 operates at lower voltages.