NCP1080DEG

Overview

The NCP1080DEG is an integrated Power over Ethernet (PoE) Powered Device (PD) and DC-DC converter controller manufactured by onsemi. Designed for applications requiring up to 13W of power, this component combines PoE-PD interface logic with a high-efficiency DC-DC switching controller in a single package. It supports IEEE 802.3af standards and features a TSSOP-20 surface-mount package. The device integrates essential protection mechanisms including over-voltage, under-voltage, and thermal shutdown to ensure reliable operation in network-powered environments.

Feature Summary

• Integrates PoE-PD classification and detection logic with a synchronous buck DC-DC controller
• Supports IEEE 802.3af compliant power delivery for low-power network devices
• Includes comprehensive protection features such as thermal shutdown and current limiting

Applications

• IP cameras and video surveillance systems
• Wireless access points and network switches
• VoIP telephones and network endpoints

Procurement Notes

Verify the specific suffix 'DEG' against the official datasheet to confirm pinout and electrical characteristics match your design requirements. Check for end-of-life notifications or discontinuance alerts from onsemi, as older PMIC families may have limited long-term availability. Ensure RoHS compliance documentation is available for regulatory adherence.

Selection Notes

Select this component when designing compact PoE-powered devices that require both classification and voltage regulation in a minimal footprint. Compare its integration level against discrete solutions to evaluate BOM cost and board space savings. Consider the TSSOP-20 package constraints for thermal management and layout density in dense PCB designs.

Part Context

The NCP1080 series belongs to onsemi's portfolio of integrated power management solutions for networking equipment. It serves as a foundational component for enabling power delivery over Ethernet cables, simplifying the design of powered endpoints by combining interface and conversion functions into one IC.

Replacement Considerations

NCP1080DER2G is a listed variant within the same family. Verify if the reel packaging suffix impacts mechanical fit or electrical performance before substitution.