W83L771ASG TR

Overview

The W83L771ASG TR is a serial switch and digital temperature sensor manufactured by Nuvoton Technology Corporation. It features an 11-bit resolution and operates within a supply voltage range of 2.97 V to 3.6 V. The device utilizes a 2-wire interface for data communication and is housed in a surface-mount TSSOP-8 package with dimensions of 3 mm x 3 mm. It supports a maximum operating current of 1 mA and functions within a temperature range up to 70 °C, offering a thermal accuracy of 3 °C.

Feature Summary

• Integrates serial digital sensing capabilities with switch functionality for precise thermal monitoring.
• Features a compact square surface-mount form factor designed for space-constrained PCB layouts.
• Supports low-power operation through minimal active current consumption requirements.

Applications

• Thermal management systems in portable electronic devices
• Temperature monitoring in battery-powered IoT sensors
• Over-temperature protection circuits in consumer electronics

Procurement Notes

Verify the specific suffix 'TR' indicates tape-and-reel packaging configuration when sourcing. Confirm RoHS compliance status as local records indicate potential non-compliance for this variant. Ensure the supplier provides valid traceability documentation for the 2-wire serial interface specifications. Cross-reference the TSSOP-8 pinout against the official datasheet to prevent mounting errors during assembly.

Selection Notes

Select this component when an 11-bit resolution is sufficient for the application's thermal control needs. Consider the 3 °C accuracy limit for environments requiring tighter thermal tolerances. Evaluate the 2-wire interface compatibility with existing microcontroller GPIO pins. Verify that the 3.6 V maximum supply voltage aligns with the system's power rail constraints.

Part Context

This part belongs to the W83L771 series of Winbond/Nuvoton hardware monitoring ICs. It serves as a specialized sensor solution distinct from general-purpose microcontrollers or complex interface chips like the W83977AG-A. The series focuses on dedicated thermal sensing rather than broad system management or high-speed data interfacing.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult manufacturer engineering change notices for potential obsolescence management strategies.