MCP9805T-BE/ST

Overview

The MCP9805T-BE/ST is a digital temperature sensor designed for JEDEC JC42.4 compliance, featuring an SMBus/I2C interface and TSSOP-8 package. It operates on a 3.0V to 3.6V supply with typical current consumption of 200 µA in continuous mode and 0.1 µA in shutdown. The device provides ±1°C accuracy from +75°C to +95°C and ±2°C from +40°C to +125°C, with a resolution of 0.25 °C/LSb.

Feature Summary

• Complies with JEDEC standard JC42.4 for mobile platform memory module thermal sensing
• Features user-programmable registers for configurable temperature event boundaries and critical outputs
• Supports up to eight sensors on a single serial bus via standard I2C/SMBus protocol

Applications

• Dual In-line Memory Module (DIMM) thermal monitoring
• Personal Computers (PCs) and Servers
• Hard Disk Drives and Other PC Peripherals
• General Purpose Temperature Sensor

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration as per Microchip documentation. Confirm that the BE variant corresponds to the specified accuracy ranges and operating voltage parameters. Ensure compatibility with host controller voltage levels for the open-drain serial interface before integration.

Selection Notes

Select this component for applications requiring strict adherence to JEDEC JC42.4 standards for memory module thermal management. It is suitable for systems needing precise active range accuracy within +75°C to +95°C. Consider its low shutdown current for power-sensitive environments where intermittent monitoring is required.

Part Context

This part belongs to the MCP9805 family of digital temperature sensors manufactured by Microchip Technology. It shares core functionality with variants like MCP9805-BE/P but differs in package type and shipping format. The series is engineered specifically for board-mounted thermal sensing in computing and storage devices.

Replacement Considerations

Cross-reference with MCP9805-BE/ST for identical electrical specifications and pinout. Verify package dimensions if substituting with other MCP9805 variants such as DFN-8 versions, ensuring mechanical fit and thermal resistance requirements are met.