MAX5981AETE+

Overview

The MAX5981AETE+ is a Power over Ethernet (PoE) controller manufactured by Analog Devices Inc./Maxim Integrated. It operates within an input voltage range of 3V to 36V and supports IEEE 802.3at Class 4 power delivery standards. The device integrates high-side current sensing with programmable thresholds for precise load monitoring. It features a built-in soft-start mechanism to limit inrush current during startup. The component is housed in a compact TQFN-16 package suitable for surface mount applications.

Feature Summary

• Integrates high-side current sensing with programmable threshold detection for accurate load monitoring
• Supports IEEE 802.3at Class 4 PoE standards for enhanced power delivery capabilities
• Includes internal soft-start functionality to manage inrush current during initialization

Applications

• Power over Ethernet endpoint devices requiring Class 4 compliance
• Network infrastructure equipment needing integrated power management
• Industrial IoT gateways utilizing PoE power sourcing

Procurement Notes

Verify the specific suffix 'AETE+' against the manufacturer's official datasheet to confirm pinout compatibility and thermal pad requirements. Ensure the ordering documentation explicitly references the RoHS compliant status as indicated by the '+' designation. Cross-reference the part number with the latest Analog Devices inventory lists to confirm availability status before finalizing procurement plans.

Selection Notes

Select this component when designing systems that require integrated PoE control and current sensing without external discrete comparators. It is suitable for applications demanding IEEE 802.3at Class 4 performance within a compact footprint. Consider the operating temperature range and package thermal characteristics relative to the target enclosure design constraints.

Part Context

This component belongs to the Maxim Integrated PoE controller family, designed to simplify power sourcing equipment integration. It consolidates essential power management functions into a single monolithic solution. The series targets modern networked devices requiring reliable and standardized power delivery over Ethernet cabling.

Replacement Considerations

Consult the official Analog Devices replacement matrix for verified cross-references. Ensure any substitute maintains identical pinout configuration and IEEE 802.3at Class 4 support.