Integrated Poe-Pd And Dc-Dc Converter Controller, 40 W, With Auxiliary Supply Support/ Reel |Onsemi NCP1083DER2G

NCP1083DER2G – Integrated PoE-PD & DC-DC Controller – 40W with Auxiliary Sense | onsemi

This onsemi NCP1083DER2G integrated circuit combines Power-over-Ethernet Powered Device (PoE-PD) functionality and DC-DC conversion control in a single surface-mount solution. Designed for robust power delivery up to 40W, it simplifies power implementation in networked devices while supporting auxiliary power inputs and complying with IEEE 802.3af/at standards. PCX supplies this controller for reliable integration into industrial and commercial systems, backed by same-day shipping and technical support.

Key Features

• 40W Max Power Delivery – Supports high-power endpoints
• IEEE 802.3af (PoE) & 802.3at (PoE+) Compliant
• Auxiliary Power Input Sensing – Enables hybrid power sources
• Integrated Controller (PD) – Single-chip solution
• Wide Voltage Range – 0V to 57V operation
• Industrial Temperature Range – -40°C to +85°C

Technical Specifications

The NCP1083DER2G features a single-channel controller architecture with both internal switches for efficient power management. Housed in a compact 20-TSSOP-EP exposed pad package, it provides optimal thermal dissipation for demanding environments. The device includes advanced signature detection and classification per PoE standards, with auxiliary supply monitoring for seamless power source transitions.

Typical Applications

• Wireless access points and network routers
• IP security cameras and surveillance systems
• Industrial IoT controllers and sensors
• VoIP phones and communication devices
• Building automation control units

About onsemi

onsemi (formerly ON Semiconductor) is a global leader in energy-efficient innovations, delivering semiconductor solutions for automotive, industrial, and cloud-power applications. With over 25 years of power management expertise, onsemi drives technological advancements in sustainable electronics through rigorous quality control and cutting-edge R&D.

The company maintains industry-leading reliability standards (AEC-Q100 for automotive, IATF 16949 certified) across its product portfolio. onsemi’s PoE controllers are widely adopted in mission-critical infrastructure, reflecting their commitment to performance and long-term supply stability.

About PoE Controllers

Power-over-Ethernet controllers manage power delivery and data transmission over standard Ethernet cables, eliminating separate power supplies in networked devices. PD (Powered Device) controllers like the NCP1083DER2G regulate incoming power while negotiating voltage requirements with PSE (Power Sourcing Equipment) switches.

These ICs are fundamental to modern connected systems, enabling cleaner installations, reduced wiring costs, and centralized power management. Advanced controllers incorporate DC-DC conversion, thermal protection, and auxiliary power support for resilient operation in industrial, commercial, and IoT environments.

Packaging Options

Available in industry-standard Tape & Reel (TR) and Cut Tape (CT) formats for automated assembly. Please specify packaging requirements when ordering.

Frequently Asked Questions

Question: Is this IC compatible with 802.3bt (PoE++) equipment?
Answer: No, this controller supports 802.3af (15.4W) and 802.3at (30W) standards only.

Question: Can I use it without an external DC-DC converter?
Answer: Yes, it integrates both PoE-PD control and DC-DC conversion circuitry.

Question: Does the auxiliary sense feature support hot-swapping?
Answer: Yes, it enables smooth transitions between PoE and auxiliary power sources during operation.

Question: Is this suitable for outdoor installations?
Answer: Yes, its -40°C to +85°C operating range covers most industrial environments.

Question: Why choose a PoE controller over discrete components?
Answer: Integrated controllers reduce design complexity, improve reliability, and accelerate time-to-market.

Question: Are evaluation boards available for this IC?
Answer: Contact PCX support for development kit recommendations and datasheet access: onsemi NCP1083 Datasheet

Note: Product image is representational. Refer to datasheet for exact dimensions.

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