NCP1081DER2G DC-DC Power Conversion by ON Semiconductor

Integrated PoE-PD and DC-DC Converter Controller, 40 W

Status: Active
Series: NCP1081
RoHS: Compliant
Download Datasheet Visit Manufacturer Site View Pricing & Stock

The NCP1081 is a member of ON Semiconductor's high power HIPO™ Power over Ethernet Powered Device (PoE-PD) product family and represents a robust, flexible and highly integrated solution targeting demanding medium and high power Ethernet applications. It combines in a single unit an enhanced PoE-PD interface fully compliant with the IEEE 802.3af and IEEE 802.3at (Draft 3.0) specifications and a flexible and configurable DC-DC converter controller. The NCP1081's exceptional capabilities offer new opportunities for the design of products powered directly over Ethernet lines, eliminating the need for local power adaptors or power supplies and drastically reducing the overall installation and maintenance cost. ON Semiconductor's unique manufacturing process and design enhancements allow the NCP1081 to deliver up to 25 W for the IEEE 802.3at (Draft 3.0) standard and up to 40 W for proprietary high power PoE applications. The NCP1081 is IEEE 802.3at (Draft 3.0) compliant and implements a Two Event Layer 1 classification. Additional proprietary classification procedures support high power power sourcing equipment (PSE) on the market. The unique high power features leverage the significant cost advantages of PoE-enabled systems to a much broader spectrum of products in emerging markets such as Industrial Ethernet, PTZ and Dome IP cameras, RFID, MIMO WLAN access points, notebooks, etc. The NCP1081 is fabricated in a robust high voltage process and integrates a rugged vertical N-channel DMOS with a low loss current sense technique suitable for the most demanding environments and capable of withstanding harsh environments such as hot swap and cable ESD events.

Where to Buy

Prices starting from US$1.78

Distributor Stock
Logo for Farnell
from US$1.96
No stock
Buy Now
Logo for Newark Electronics
Newark Electronics
from US$1.78
Buy Now
Logo for element14
from US$2.03
Buy Now


Delivers up to 40 W
Full operation to TJ=150C
Robust 3.0 kV cable ESD protection
Exposed TSSOP-20 EP package
Supports power hungry apps
Wide operating temperature range
Extended operation in harsh environments
Thermally enhanced package for higher output current
Power over Ethernet Powered Device (PoE-PD) interface and Integrated DC-DC converter controller
PTZ and dome security cameras
Point of Sales terminals
Notebook computers
End Products
MIMO WLAN access points
Industrial Ethernet HMIs and UPS backed PLCs and IOMs
RFID readers


Description NCP1081
Compliance Pb-free Halide free
Topology Flyback
Phases 1
Control Mode Current Mode
VCC Max (V) 57
fSW Typ (kHz) 250
Package Type TSSOP-20

Alternative Descriptions

Integrated Poe-Pd And Dc-Dc Converter Controller, 40 W/Reel |Onsemi NCP1081DER2G | Newark Electronics
POE, CTLR, 40W, 20TSSOP | element14

Frequently Asked Questions

Where can I find additional details, specifications and documents for a NCP1081DER2G?

Additional datasheets, footprints and schematics for NCP1081DER2G are listed on our Part Details page. You can also find images and similar parts to NCP1081DER2G on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for NCP1081DER2G on our Product Comparison page. Access via the 'View Pricing & Stock' button to view NCP1081DER2G price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does NCP1081DER2G fall under?

The NCP1081DER2G is listed under Power Management > DC-DC Power Conversion > Controllers.

Can I view similar or alternative parts?

You can view similar parts to NCP1081DER2G when available in the Controllers range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the NCP1081DER2G you can contact the distributor directly for product support, shipping queries etc.

Is the NCP1081DER2G RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by ON Semiconductor.

Which authorised distributors for NCP1081DER2G have stock available?

Authorised distributors including Newark Electronics, element14 and Farnell have stock available or on a lead time for NCP1081DER2G.

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for NCP1081DER2G often in real-time on the comparison pages.

What if I can't find stock of NCP1081DER2G?

You can fill out our help required form which you can use to request a quote for NCP1081DER2G from some of our verified obsolescence suppliers. Alternatively, contact us via our web chat in the bottom left of your screen and one of our team will try to help.

We use cookies to improve your experience. See our privacy policy.