MAX5953BUTM+

Overview

The MAX5953BUTM+ is a Power over Ethernet (PoE) controller compliant with the IEEE 802.3af standard, designed for use in Powered Device (PD) applications. It operates within a supply voltage range of 11V to 76V and draws a typical supply current of 400µA. The device supports single-channel operation and is housed in a 48-TQFN package measuring 7x7 mm. It functions reliably across an operating temperature range of 0°C to +85°C.

Feature Summary

• IEEE 802.3af PoE compliance for standardized power delivery
• Integrated control logic for Powered Device implementation
• Wide input voltage tolerance suitable for various network conditions

Applications

• Power over Ethernet Powered Devices
• Wireless networking equipment
• Embedded systems requiring integrated PoE control

Procurement Notes

Verify component authenticity through authorized channels due to potential availability constraints. Confirm package integrity and pin alignment prior to integration. Ensure environmental conditions match the specified operational temperature range during storage and deployment.

Selection Notes

Select this component for designs requiring strict adherence to IEEE 802.3af standards. Evaluate thermal management requirements given the TQFN package dimensions. Consider system voltage ranges to ensure compatibility with the 11V to 76V operating window.

Part Context

This part belongs to the Maxim Integrated line of power management solutions, specifically targeting Ethernet connectivity. It integrates necessary control functions to simplify PD design compared to discrete solutions. The manufacturer provides technical documentation detailing electrical characteristics and application circuits.

Replacement Considerations

Consult official substitution guides for compatible alternatives. Verify pinout compatibility and electrical specifications before replacing. Ensure any substitute maintains IEEE 802.3af compliance.