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ONSEMI NCP1081DEG PoE Power Controller

The NCP1081 is a high power PoE-PD interface and DC-DC converter controller designed for demanding Ethernet applications, supporting IEEE 802.3af and 802.3at standards. It integrates a robust PoE power interface with configurable classification and an efficient current mode DC-DC controller suitable for various topologies, including isolated and non-isolated fly-back, forward, and buck converters. Capable of delivering up to 40 W, it features programmable voltage, current limits, and supports high temperature environments, making it ideal for industrial, security, and high-power Ethernet powered devices. Its design ensures high reliability and integration convenience.

Authorized Distributors
Part No:NCP1081DEG
Stock:0
Inv Date:06-11-2026
Price: N/A
Buy/RFQ:
Part No:NCP1081DEG
Stock:0
Inv Date:06-10-2026
Price: Unit price: $0.76
Buy/RFQ:

ONSEMI NCP1081DEG PoE Power Controller Specifications:

  • Supports IEEE802.3af and IEEE802.3at standards
  • Power output: up to 40 W
  • Industrial temperature range: -40°C to 85°C
  • VPORTP input voltage: 0–57 V
  • Vsignature detection range: 1.4–95 V
  • Classification current: adjustable from 9 to 60 mA
  • Input signature resistance: 23.75–26.25 kΩ
  • External resistor for signature adjustment
  • Integrated VDDH (9 V) and VDDL (3.3 V) regulators
  • Supports high power classification and proprietary modes
  • Supports linear and switch-mode DC-DC conversion topologies
  • Programmable oscillator frequency and soft-start
  • Over-temperature, UVLO, and thermal shutdown protection
  • Package: TSSOP-20 EP, operating temperature: -40°C to 85°C
  • Supports hot-swap and overload conditions
  • Wide duty cycle: up to 80%
  • Supports high voltage transients and harsh environments

Buy the ON Semiconductor Series NCP Series PoE-PD Interface: NCP1081

Purchase the ON Semiconductor NCP1081 online today to benefit from a highly integrated PoE-PD interface and DC-DC controller capable of delivering up to 40 W. Designed for demanding industrial and security Ethernet devices, it offers programmable current limits, high thermal stability, and protection features. Ideal for applications requiring robust high power PoE solutions, this product ensures reliable operation across wide temperatures and harsh environments. Order now to enhance your Ethernet-powered systems with trusted, high-performance components.

Buy ON Semiconductor NCP1081 now and experience unmatched reliability and high efficiency in power over Ethernet solutions.

Frequently Asked Questions

Where can I buy ONSEMI NCP1081DEG?

You can click on the BUY or RFQ button to purchase NCP1081DEG from an authorized ONSEMI distributor.

How do I troubleshoot issues or seek technical support for part NCP1081DEG?

You can download the NCP1081DEG datasheet or visit the ONSEMI website for support.

Who is the manufacturer of NCP1081DEG?

ONSEMI

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