MAX5935CAX+

Overview

The MAX5935CAX+ is a quad network power controller designed for Power-over-Ethernet (PoE) applications, compliant with IEEE 802.3af standards. It integrates four independent channels to manage power delivery over twisted-pair cabling. The device operates within a wide input voltage range and supports high-efficiency power conversion. Key electrical parameters include an operating temperature range from -40°C to +85°C and a supply current of 270 µA. It features a 36-SSOP package for compact integration in networking infrastructure.

Feature Summary

• IEEE 802.3af compliance for standardized PoE power delivery
• Quad-channel architecture for simultaneous port management
• Integrated protection mechanisms against short circuits and overloads
• Low quiescent current operation for energy efficiency

Applications

• Power-over-Ethernet switches and hubs
• Wireless access points requiring centralized power management
• Network infrastructure equipment with multiple PoE ports
• Industrial control systems utilizing PoE-powered sensors

Procurement Notes

Verify the exact suffix 'CAX+' against official Analog Devices documentation to confirm the specific temperature grade and package variant. Ensure compatibility with existing PCB footprints for the 36-SSOP package. Confirm that the component meets all relevant safety and electromagnetic interference standards required for your specific deployment environment before finalizing procurement.

Selection Notes

Select this component when designing systems requiring integrated management for up to four PoE ports under IEEE 802.3af specifications. Consider its quad-channel capability if space constraints prevent using individual controllers per port. Evaluate the thermal performance within the -40°C to +85°C range relative to your enclosure design. Verify that the input voltage requirements align with your system's power distribution network.

Part Context

This part belongs to the Maxim Integrated portfolio, now part of Analog Devices Inc., specializing in power management solutions. The MAX5935 series addresses the growing demand for efficient power delivery in networking hardware. It serves as a critical interface between the main power source and PoE-enabled end devices, ensuring reliable operation in diverse environmental conditions.

Replacement Considerations

Consult official Analog Devices substitution guides for verified alternatives. Generic replacements may not match the precise quad-channel configuration or IEEE 802.3af compliance. Ensure any substitute maintains the same pinout and thermal characteristics to avoid redesigning the host circuit board.