Texas Instruments

LM81CIMT-3  

Thermal Management ICs

LM81CIMT-3 Description

The LM81CIMT-3 is a hardware monitor IC designed for thermal management applications, manufactured by Texas Instruments. This device integrates an ADC (Sigma Delta) topology, a comparator, fan speed control, and a register bank, making it a comprehensive solution for monitoring and managing system temperatures. It features both internal and external sensor types, providing accurate temperature readings with a maximum accuracy of ±3°C. The LM81CIMT-3 operates within a supply voltage range of 2.8V to 3.8V and is housed in a 24-TSSOP package, suitable for surface mount applications. It also includes output fan and alarm functionalities, enhancing its versatility in various thermal management scenarios. The product has an ECCN classification of EAR99 and is REACH unaffected, ensuring compliance with international regulations. With a moisture sensitivity level (MSL) of 1 (unlimited), the LM81CIMT-3 is robust and suitable for a wide range of industrial environments.

LM81CIMT-3 Features

• Comprehensive Monitoring Capabilities: The LM81CIMT-3 integrates multiple functionalities, including an ADC (Sigma Delta) for precise temperature measurements, a comparator for threshold detection, fan speed control for active cooling management, and a register bank for data storage and retrieval.
• High Accuracy: With a maximum accuracy of ±3°C, the LM81CIMT-3 ensures reliable temperature monitoring, crucial for maintaining system performance and preventing overheating.
• Versatile Sensor Options: The device supports both internal and external sensors, allowing for flexible monitoring of various system components and ambient temperatures.
• Wide Operating Voltage Range: The LM81CIMT-3 operates within a supply voltage range of 2.8V to 3.8V, making it suitable for a variety of power supply configurations.
• Surface Mount Compatibility: The 24-TSSOP package is designed for surface mount applications, facilitating easy integration into modern PCB designs.
• Output Fan and Alarm: The inclusion of output fan and alarm functionalities enables proactive thermal management and alerts for potential overheating conditions.
• Regulatory Compliance: Classified under ECCN EAR99 and REACH unaffected, the LM81CIMT-3 meets international regulatory standards, ensuring its suitability for global markets.
• Robustness: With a moisture sensitivity level (MSL) of 1 (unlimited), the LM81CIMT-3 is highly resilient to environmental conditions, making it ideal for industrial and rugged applications.

LM81CIMT-3 Applications

The LM81CIMT-3 is ideal for a range of applications where precise temperature monitoring and active thermal management are critical. These include:

• Telecommunications Equipment: Ensuring optimal operating temperatures in routers, switches, and base stations to prevent thermal degradation and maintain performance.
• Industrial Control Systems: Monitoring and managing temperatures in PLCs, motor controllers, and other industrial electronics to prevent overheating and system failures.
• Data Centers: Providing accurate temperature readings and active cooling control in server racks and data storage systems to maintain operational efficiency.
• Automotive Electronics: Monitoring temperatures in ECUs, power modules, and other automotive electronics to ensure reliability and safety.
• Consumer Electronics: Enhancing thermal management in gaming consoles, high-performance PCs, and other consumer devices to prevent overheating and improve user experience.

Conclusion of LM81CIMT-3

The LM81CIMT-3 from Texas Instruments is a robust and versatile hardware monitor IC designed for thermal management applications. Its comprehensive set of features, including high accuracy, versatile sensor options, and wide operating voltage range, make it an ideal solution for a variety of industries. The inclusion of output fan and alarm functionalities further enhances its capabilities, ensuring proactive thermal management and system reliability. With regulatory compliance and a high moisture sensitivity level, the LM81CIMT-3 is well-suited for global markets and demanding industrial environments. While the product is now obsolete, its legacy continues to influence the design and functionality of modern thermal management solutions.

LM81CIMT-3 Documents

Download datasheets and manufacturer documentation for LM81CIMT-3

Datasheets :

LM81      

HTML Datasheet :

LM81      

PCN Design/Specification :

TSSOP Pkg Cu Wire 23/Jul/2013