LTC2995CUD#PBF

Thermal Management Overview

The LTC2995CUD#PBF is a high-accuracy temperature sensor and dual voltage monitor featuring open-drain alert outputs. It converts the temperature of an external diode or its own die to an analog output voltage while rejecting errors due to noise and series resistance. Two supply voltages and the measured temperature are compared against upper and lower limits set with resistive dividers. If a threshold is exceeded, the device communicates an alert by pulling low the corresponding open drain logic output. The device provides ±1°C accurate temperature results using commonly available NPN or PNP transistors or temperature diodes built into modern digital devices. Voltages are monitored with 1.5% accuracy. A 1.8V reference output simplifies threshold programming and can be used as an ADC reference input.

Thermal Management Feature Summary

• Dual overvoltage/undervoltage supply monitoring with adjustable thresholds
• Single overtemperature/undertemperature remote temperature monitoring
• Voltage output proportional to absolute temperature
• Open drain alert outputs for system integration

Thermal Management Applications

• Network servers
• Core and I/O voltage monitors
• Desktop and notebook computers
• Environmental monitoring

Thermal Management Procurement Notes

Verify the specific suffix CUD indicates the commercial temperature grade (0°C to 70°C) and QFN package. Confirm RoHS compliance and lead-free finish status through official manufacturer documentation before procurement. Ensure the ordering part number matches the required operating range and packaging format.

Thermal Management Selection Notes

Select this component when simultaneous monitoring of two supply rails and one temperature point is required in a compact form factor. Consider the 3mm x 3mm QFN package constraints and the need for external resistor dividers to set precise voltage and temperature thresholds. Evaluate quiescent current requirements against the 220µA typical consumption.

Thermal Management Part Context

This part belongs to the Analog Devices LTC2995 family of supervisory circuits designed for power management and system health monitoring. It integrates temperature sensing and voltage supervision functions into a single chip, reducing component count in embedded systems requiring robust fault detection capabilities.

Thermal Management Replacement Considerations

LTC2995IUD#PBF: Industrial temperature grade (-40°C to 85°C). LTC2995HUD#PBF: Extended temperature grade (-40°C to 125°C).