MAX5922AEUI+

Overview

The MAX5922AEUI+ is a single-port hot-swap voltage controller designed for +48V network applications. It integrates a power switch and control logic to manage safe insertion and removal of circuit boards from live backplanes. The device supports IEEE 802.3af Power over Ethernet (PoE) standards, providing precise current limiting and thermal protection. Packaged in a TSSOP-28 surface-mount enclosure, it operates within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates a high-voltage N-channel power switch with dedicated control circuitry for single-port management
• Provides programmable current limiting and soft-start capabilities to prevent inrush currents during board insertion
• Includes comprehensive fault protection mechanisms such as thermal shutdown and overcurrent detection

Applications

• IEEE 802.3af compliant Power over Ethernet endpoints
• Single-port network interface cards requiring hot-swap capability
• Telecommunications equipment powered by +48V DC bus systems

Procurement Notes

Verify the specific suffix designation against official Analog Devices documentation to confirm package type and temperature grade. Confirm RoHS compliance status through manufacturer datasheets or certificates of conformity. Check for obsolescence notices or lifecycle changes directly from the supplier before finalizing procurement plans.

Selection Notes

Select this component when designing single-port +48V systems requiring integrated PoE switching and hot-swap protection. Ensure the application voltage does not exceed the specified maximum ratings. Verify that the TSSOP-28 footprint aligns with the PCB layout constraints and thermal requirements of the target design.

Part Context

This part belongs to the Maxim Integrated MAX59xx series of hot-swap controllers, which are widely used in networking and telecommunications infrastructure. These devices simplify power distribution by combining switch and control functions into a single compact solution, reducing bill-of-materials complexity compared to discrete implementations.

Replacement Considerations

Consult official cross-reference lists for direct replacements. Verify pin compatibility and electrical specifications before substituting with other single-port hot-swap controllers.