MAX6639ATE+T

Thermal Management Overview

The MAX6639ATE+T is a 2-channel temperature monitor with dual automatic PWM fan-speed controllers. It operates from 3.0V to 3.6V and consumes 500µA of supply current. The device monitors its own temperature and one or two external diode-connected transistors, typically found in CPUs, FPGAs, or GPUs. It features an SMBus interface for reading data and programming alarm thresholds. The package is a 16-pin TQFN-EP.

Thermal Management Feature Summary

• Monitors local die temperature and up to two remote thermal-diode inputs
• Integrates dual open-drain PWM outputs capable of driving cooling fans via tachometer feedback
• Provides programmable alarm outputs including OT, THERM, ALERT, and FANFAIL for system protection
• Supports three selectable SMBus slave addresses for multi-device systems

Thermal Management Applications

• Desktop Computers
• Notebook Computers
• Servers
• Networking Equipment

Thermal Management Procurement Notes

Verify the specific suffix 'ATE' corresponds to the 16-pin TQFN-EP package variant. Confirm that the operating range covers -40°C to +125°C as specified for this part number. Ensure compatibility with standard SMBus protocols before integration into the design.

Thermal Management Selection Notes

Select this component when monitoring multiple thermal zones using external diodes is required. It is suitable for applications needing active fan control based on real-time temperature profiles. Consider the TQFN-EP package for improved thermal dissipation compared to QSOP variants.

Thermal Management Part Context

This device belongs to the MAX6639 family of hardware monitors. It is designed for high-reliability thermal management in computing environments. The MAX6639ATE+T specifically denotes the lead-free/RoHS-compliant version housed in the thin QFN package.

Thermal Management Replacement Considerations

MAX6639FATE+ is available for Penryn compatibility optimization.