MAX5972AETE+T

Overview

The MAX5972AETE+T is a hot-swap voltage controller designed for IEEE 802.3af/at-compliant powered devices. It manages power insertion into Ethernet networks, providing controlled ramp-up of output voltage and current limiting to prevent bus collapse during connection. The device integrates an N-channel MOSFET driver and supports precise overvoltage protection thresholds. Packaged in a TQFN-16 surface-mount enclosure, it operates within a specified temperature range suitable for industrial applications.

Feature Summary

• Ensures safe power insertion by controlling the rate of voltage rise on the power bus
• Provides programmable current limiting to protect against short circuits and overload conditions
• Integrates high-side switch control with built-in thermal shutdown capabilities

Applications

• Powered Device (PD) implementations in Power over Ethernet systems
• Industrial networking equipment requiring compliant hot-swap power management
• Telecommunications infrastructure utilizing IEEE 802.3af or 802.3at standards

Procurement Notes

Verify the specific suffix 'A' against the required datasheet revision, as variations may exist between A and B grades. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the TQFN-16 package footprint matches the PCB layout design rules. Cross-reference the ordering part number with the latest Analog Devices catalog to confirm active status and availability constraints.

Selection Notes

Select this component when designing powered devices that must strictly adhere to IEEE 802.3af/at injection equipment specifications. The integrated hot-swap functionality simplifies board design by eliminating external discrete components for soft-start and current limiting. Consider the TQFN-16 package for space-constrained layouts requiring robust thermal performance and reliable surface-mount assembly processes.

Part Context

This part belongs to the Maxim Integrated PMIC portfolio, specifically within the Hot Swap Voltage Controllers category. It is part of the MAX5972 series, which focuses on Power over Ethernet applications. The device serves as a critical interface component between the network cable and the internal DC-DC converter, ensuring system reliability during power insertion events.

Replacement Considerations

The MAX5972BETE+T is a documented variant within the same family. Verify functional equivalence regarding pinout and electrical parameters before substitution. No other direct cross-model substitutes are publicly confirmed in standard catalogs.