MAX34441ETL+

Power Supply Controllers, Monitors Overview

The MAX34441ETL+ is a complex system monitor and intelligent fan controller housed in a TQFN-EP-40 package. It features five power-supply management channels with differential 12-bit ADCs for accurate voltage measurement and monitoring. The device supports up to six temperature sensors, including an internal sensor and external thermal diodes with automatic series resistance cancellation. It includes a watchdog timer, open-drain outputs, and operates on a +3.3V supply within -40°C to +85°C.

Power Supply Controllers, Monitors Feature Summary

• Provides five-channel power-supply management with programmable sequencing and margining capabilities
• Integrates closed-loop fan control supporting three-wire and four-wire fans with dual tachometer inputs
• Supports connection of up to six temperature sensors via I2C digital temp sensor ICs or external thermal diodes
• Features PMBus-compliant command interface with onboard nonvolatile fault logging

Power Supply Controllers, Monitors Applications

• Network switches and routers
• Base stations
• Servers
• Smart grid network systems
• Industrial controls

Power Supply Controllers, Monitors Procurement Notes

Verify component authenticity through authorized Analog Devices distributors. Confirm the specific suffix ETL+ matches the required TQFN-EP-40 package and lead-free specifications. Check current availability status as supply may be limited. Ensure compatibility with existing PMBus communication protocols and thermal management requirements before integration.

Power Supply Controllers, Monitors Selection Notes

Select this component when five independent power rails require simultaneous supervision and intelligent thermal regulation. The integrated fan controller eliminates external logic for noise reduction. Verify that the system requires PMBus compliance for centralized management. Consider the TQFN-EP-40 footprint constraints and thermal dissipation needs for the application environment.

Power Supply Controllers, Monitors Part Context

This part belongs to the MAX34441 series of system monitors designed for high-density electronics. It consolidates voltage supervision, thermal sensing, and fan control into a single IC. The series targets infrastructure equipment requiring robust power integrity and automated thermal response without excessive component count.

Power Supply Controllers, Monitors Replacement Considerations

No public confirmed substitute part numbers are available.