NCT3940S TR

Overview

The NCT3940S TR is a fully integrated DC brushed motor driver manufactured by Nuvoton Technology Corporation. It utilizes PMOS technology and features an open/close interface for control. The device supports a supply voltage range of 4.5V to 5.5V and delivers an output current of 500mA. Designed for high-end output configuration, it operates within a junction temperature range of -40°C to 125°C. The component is housed in an 8-SOIC surface-mount package with a width of 3.90mm.

Feature Summary

• Fully integrated driver combining control logic and power stage
• PMOS technology for efficient switching
• High-end output configuration

Applications

• Brushed DC motor control

Procurement Notes

Verify component status as the NCT3940S series is listed as obsolete or discontinued in public records. Confirm availability through authorized distributors or secondary markets. Ensure the specific suffix matches the required packaging format. Check for any product change notices regarding assembly site transfers or specification updates prior to procurement.

Selection Notes

Select this component for applications requiring simple on/off control of small brushed DC motors within a 5V logic domain. The high-end switch configuration dictates load connection topology. Verify that the 500mA output current meets the motor's stall and running requirements. Consider the thermal performance of the SOIC package under continuous load conditions.

Part Context

The NCT3940S belongs to the NCT3940 family of motor drivers from Nuvoton. This series focuses on low-pin-count solutions for basic motor actuation. The 'TR' suffix indicates tape and reel packaging for automated assembly. It serves as a dedicated driver IC rather than a complex controller with PWM capabilities.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.