MCP9844T-BE/MNYAB

Thermal Management Overview

The MCP9844T-BE/MNYAB is a digital temperature sensor by Microchip Technology, operating within a specified voltage range of 1.7V to 3.6V. It features a user-selectable measurement resolution of +0.5°C, +0.25°C, +0.125°C, or +0.0625°C. The device provides an accuracy of ±0.2°C typical and ±1°C maximum from +75°C to +95°C, with an operating current of 100 µA typical. It utilizes a 1 MHz, 2-Wire I2C interface and is housed in an 8-Pin TDFN package.

Thermal Management Feature Summary

• Features a 1 MHz, 2-Wire I2C compatible serial interface for high-speed communication.
• Supports user-programmable temperature limits including window and critical boundaries.
• Offers selectable measurement resolutions ranging from 0.5°C down to 0.0625°C.
• Includes an open-drain event output pin configurable as a comparator or interrupt.

Thermal Management Applications

• Temperature sensing for solid state drives (SSD)
• General purpose temperature datalogging
• Industrial freezers and refrigerators
• Personal computers and servers

Thermal Management Procurement Notes

Verify the specific suffix AB against official documentation to confirm any unique manufacturing or testing variations. Ensure the 8-Pin TDFN package matches your PCB footprint requirements. Confirm that the 1.7V to 3.6V supply voltage aligns with your system design constraints before finalizing procurement.

Thermal Management Selection Notes

Select this component when high accuracy is required within the +75°C to +95°C active range. Consider the 1 MHz I2C speed for systems requiring rapid data acquisition. Evaluate the low shutdown current if power management is critical. Ensure the host controller supports the standard I2C protocol and can handle the open-drain event output configuration.

Thermal Management Part Context

This part belongs to the MCP9844 family of digital temperature sensors designed for precise thermal monitoring. It integrates a band gap sensor and delta-sigma ADC to convert temperature to digital data. The device is optimized for applications requiring flexible configuration options and robust performance across industrial temperature ranges.

Thermal Management Replacement Considerations

Check datasheets for alternative Microchip models like the MCP9843 or MCP9803. Verify compatibility regarding package type, I2C address bits, and accuracy specifications. Ensure replacement parts support the same voltage range and interface speeds required by your application.

Thermal Management FAQ

What is the default measurement resolution?

The power-up default resolution is 0.25°C per bit.

How is the event output configured?

The event output is an open-drain pin that can be configured as either an active-low comparator output or an active-high interrupt output via the Configuration register.