MAX5952AUAX+

Overview

The MAX5952AUAX+ is a quad Powered Session Equipment (PSE) controller designed for Power over Ethernet applications. It supports IEEE 802.3af and 802.3at standards, providing four independent channels for power delivery. The device operates within a supply voltage range of 32V to 60V and draws a typical supply current of 4.8mA. It features an operating temperature range from 0°C to +85°C and is housed in a 36-lead SSOP package. The controller manages hot-swap conditions without internal switches, requiring external MOSFETs for power path control.

Feature Summary

• Integrates four independent PSE channels compliant with IEEE 802.3af and 802.3at standards
• Supports hot-swap operation for safe insertion and removal of powered devices
• Provides comprehensive protection mechanisms including overcurrent and thermal shutdown
• Features programmable delay timers for precise power-up sequencing

Applications

• Power over Ethernet hubs and switches
• Wireless access point power distribution
• IP camera network infrastructure
• Industrial PoE controllers

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to the presence of counterfeit risks in the market. Confirm that the specific suffix matches the required tape-and-reel or tube packaging configuration. Ensure that the lead-free designation aligns with RoHS compliance requirements for your assembly process. Cross-reference the date code against production status updates as availability may vary by region.

Selection Notes

Evaluate the requirement for external MOSFETs since this controller lacks integrated power switches. Compare channel count needs against alternative single or dual-channel solutions if fewer ports are sufficient. Consider the thermal performance of the 36-SSOP package relative to the expected power dissipation in dense PCB layouts. Verify compatibility with the system's input voltage range, specifically ensuring it accommodates the 32V to 60V operational window.

Part Context

This component belongs to the MAX5952 family of PoE controllers from Analog Devices/Maxim Integrated. It serves as a core management unit for distributing DC power alongside data signals on Ethernet cabling. The part is categorized under PMIC - Power Management ICs, specifically within the Hot Swap Voltage Controllers subcategory. It complements other Maxim products like the MAX16952 switching controllers in broader power management designs.

Replacement Considerations

Public confirmed substitute part numbers include MAX5952CUAX+ and MAX5952AEAX+. These variants share identical functional specifications but differ in temperature grades or packaging options. Verify pinout compatibility and electrical parameters before substitution to ensure seamless integration into existing designs.