NCP1095DB

Overview

The NCP1095DB is a PoE-PD interface controller by onsemi, compliant with IEEE 802.3af/at and -3bt standards. It supports up to 90W power applications with five-event physical layer classification and Autoclass functionality. Key electrical parameters include an operating voltage range of 0V to 57V, a typical surge current limit of 110mA, and an equivalent detection resistance of 23.7kΩ to 26.3kΩ. The device operates within a junction temperature range of -40°C to +125°C and features overcurrent and overtemperature protection mechanisms for reliable system operation.

Feature Summary

• Comprehensive compliance with IEEE 802.3af/at and -3bt standards for broad PoE system compatibility.
• Integrated detection, classification, and surge current limiting stages for simplified PD design.
• Supports high-power applications up to 90W with flexible five-event classification and Autoclass capabilities.
• Includes auxiliary power detection pin enabling dual-input flexibility for PoE or wall adapter scenarios.

Applications

• Indoor positioning base stations requiring robust power delivery
• High-power access points and network infrastructure devices
• IoT gateways and edge computing nodes
• Smart building automation controllers

Procurement Notes

Verify the End-of-Life (EOL) status prior to procurement. Manufacturer discontinuance notifications indicate that this component is scheduled for obsolescence. Designers must confirm availability through authorized distributors and assess lead times carefully. Consider engineering change notices regarding manufacturing site changes or certification suspensions that may impact supply chain stability during the transition period.

Selection Notes

Select the NCP1095DB when designing Power over Ethernet Powered Devices requiring support for the latest -3bt high-power standards. Ensure the application demands a TSSOP-16 package and operates within the specified 0V to 57V input range. Verify that the thermal environment remains within the -40°C to +125°C junction temperature limits. This controller is suitable for systems needing precise current limiting and multi-stage classification logic.

Part Context

The NCP1095DB belongs to the NCP109 series of PoE-PD controllers from onsemi. It complements other family members like the NCP1090 and NCP1092, which typically serve lower-power or different form-factor requirements. While sharing the core PoE protocol handling architecture, the NCP1095 distinguishes itself through higher power capacity and advanced classification features tailored for modern high-density networking equipment.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Due to the EOL status, designers should evaluate alternative high-power PoE-PD controllers from the manufacturer's current portfolio or conduct a full redesign using compatible components that meet IEEE 802.3bt specifications.