NCP1081 High Power PoE-PD Interface & DC-DC Controller, TSSOP-20
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Prices updated: 12 Oct 2026
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About this product
The NCP1081 is a high-power Power over Ethernet powered device (PoE-PD) controller. It combines an IEEE 802.3af/802.3at PD interface with a configurable DC-DC converter controller, supporting power up to 40 W for medium and high-power Ethernet-powered designs. It comes in a TSSOP-20 package.
Specifications
- Standards
- IEEE 802.3af, IEEE 802.3at / IEEE 802.3af وIEEE 802.3at
- Maximum power
- 40 W / 40 وات
- Function
- PoE-PD interface and DC-DC controller / واجهة PoE-PD ومتحكم DC-DC
- Under-voltage lockout
- Adjustable / قابل للضبط
- Classification current
- Programmable / قابل للبرمجة
- Package
- TSSOP-20 / TSSOP-20
Frequently asked questions
Can I power the board directly from an Ethernet cable?
The NCP1081 is a PoE powered device controller that takes power from a PoE source over Ethernet. Its DC-DC section needs external power components such as a transformer, switching MOSFET and passives, as described in the datasheet.
Which PoE standards does it support?
It supports IEEE 802.3af and IEEE 802.3at, including two-event Layer 1 classification for 802.3at, so it works with PoE sources that follow these standards.
