MAX5953AUTM+T

Overview

The MAX5953AUTM+T is a Power over Ethernet (PoE) controller designed for IEEE 802.3af compliant Powered Device (PD) applications. It integrates a PD interface and PWM controllers with an internal DC/DC converter, eliminating the need for external power switches. The device operates within a temperature range of 0°C to +85°C and is housed in a 48-TQFN package measuring 7x7 mm with an exposed pad. Key electrical characteristics include support for single-channel PoE power distribution and compatibility with standard Ethernet cabling infrastructure.

Feature Summary

• Integrates PD interface logic with PWM control for simplified system design
• Includes internal DC/DC conversion capabilities to reduce component count
• Supports IEEE 802.3af Powered Device classification standards
• Features surface-mount packaging optimized for high-density PCB layouts

Applications

• Industrial control systems requiring remote power delivery
• Network-connected security cameras and video surveillance equipment
• Wireless access points and network infrastructure peripherals
• Remote sensor nodes in industrial automation environments

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the 48-TQFN footprint matches your PCB layout constraints. Check current availability as supply may be limited or subject to allocation. Validate that the operating temperature range meets your environmental requirements.

Selection Notes

Select this component for designs requiring integrated PoE PD management without external high-side switches. Consider the 48-TQFN package size for space-constrained applications. Evaluate the internal DC/DC efficiency against external solutions if higher power density is needed. Ensure compatibility with upstream PSE devices regarding classification signaling. Verify thermal performance given the exposed pad requirement for heat dissipation.

Part Context

This part belongs to the Maxim Integrated PoE controller family, specifically targeting Powered Device implementations. It complements other interface and power management ICs by providing a complete solution for receiving power over Ethernet cables. The series supports various industrial and commercial networking applications where reliable power and data transmission are critical.

Replacement Considerations

Check for direct pin-compatible alternatives within the same manufacturer's portfolio. Verify functional equivalence regarding IEEE 802.3af compliance and control logic. Assess package dimensions and thermal characteristics for mechanical fit. Review updated datasheets for any feature enhancements or obsolescence notices.