LM81CIMT-3

$2.23

Description：IC MONITOR SYS HARDWAR 24-TSSOP
Series：-
Mfr：Texas Instruments
Package：Tube

SKU:41e93cfe3acc Category: Thermal Management Brand: Texas Instruments

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Product introduction

LM81CIMT-3 is listed in the Thermal Management range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is IC MONITOR SYS HARDWAR 24-TSSOP. Review the specifications below when checking this part for your BOM.

Thermal Management specifications for LM81CIMT-3

Description：IC MONITOR SYS HARDWAR 24-TSSOP
Series：-
Mfr：Texas Instruments
Package：Tube
Function：Hardware Monitor
Sensor Type：Internal and External
Sensing Temperature：-40°C ~ 125°C
Accuracy：±3°C(Max)
Topology：ADC (Sigma Delta), Comparator, Fan Speed Control, Register Bank
Output Type：2-Wire SMBus
Output Alarm：Yes
Output Fan：Yes
Voltage - Supply：2.8V ~ 3.8V
Operating Temperature：-40°C ~ 125°C
Grade：-
Qualification：-
Mounting Type：Surface Mount
Package / Case：24-TSSOP (0.173", 4.40mm Width)
Supplier Device Package：24-TSSOP

Thermal Management datasheet and documents for LM81CIMT-3

LM81CIMT-3

Thermal Management Overview

The LM81CIMT-3 is a serial interface, ACPI-compatible microprocessor system hardware monitor manufactured by Texas Instruments. It operates within a supply voltage range of 2.8 V to 3.8 V and features a 400 uA operating current. The device monitors four distinct voltage thresholds: 2.5 V, 3.3 V, 5 V, and 12 V. It provides active high, active low, and open drain outputs without manual reset or power failure detection capabilities. Integrated functionality includes a watchdog timer but excludes battery backup switching. The component is housed in a 24-TSSOP package and supports surface mount installation across an industrial temperature range from -40°C to +125°C.

Thermal Management Feature Summary

Serial interface architecture enabling ACPI-compatible microprocessor system monitoring
Integrated watchdog timer for system stability management
Multi-voltage supervision supporting 2.5 V, 3.3 V, 5 V, and 12 V thresholds

Thermal Management Applications

Microprocessor system hardware monitoring
ACPI-compatible platform supervision
Industrial control system voltage tracking

Thermal Management Procurement Notes

Verify the specific suffix 'IMT' against the official datasheet to confirm the exact temperature grade and package variant. Confirm RoHS compliance status as documentation may vary by production batch. Ensure the serial interface protocol matches the target system controller requirements before integration.

Thermal Management Selection Notes

Select this component when a serial interface solution is required for ACPI-compliant systems. Verify that the 2.8 V to 3.8 V supply range aligns with the target application's power rails. Consider the 24-TSSOP footprint during PCB layout planning to ensure adequate clearance for the multiple monitored voltage inputs.

Thermal Management Part Context

This part belongs to the LM81 series of hardware monitors designed for complex digital systems. It shares functional similarities with the LM80 series but offers specific serial interface optimizations. The device serves as a central supervisory unit for managing multiple power domains in professional computing and industrial environments.