PD39210 Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
PD39210 is a Microchip IEEE 802.3bt Power over Ethernet PSE controller supporting up to 90 W Type 4 PD power delivery with integrated detection and classification. It manages 2 ports with Class 0–8 support and is housed in a Quad Flat No-Lead package. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 33
- Lifecycle
- ACTIVE
- Datasheet
- PD39210 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- IEEE 802.3bt Type 4 compliant PSE controller delivers up to 90 W per port, supporting Class 8 powered devices such as pan-tilt cameras and wireless access points
- Dual-port architecture with independent detection, classification, and current-limit control minimizes external component count for 2-port PoE switches and midspans
- Integrated hardware Class 0 to 8 detection and physical-layer fault management reduces firmware complexity and speeds time-to-market for PoE PSE designs
Applications
The PD39210 is used in enterprise network switches, PoE injectors, and industrial Ethernet equipment requiring reliable IEEE 802.3bt Type 3 or Type 4 power delivery to high-wattage PDs such as 802.11ax access points, IP cameras with pan-tilt-zoom, and VoIP endpoints. Its dual-port PSE controller simplifies 2-port midspan designs by integrating detection, classification, and power management, reducing external component count and board area. Industrial automation panels deploy the PD39210 to power IP cameras and sensors at distances up to 100 m over Cat5e or Cat6 cabling without local power supplies.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for PD39210:
Frequently Asked Questions
How much power per port can the PD39210 deliver, and which IEEE 802.3bt power classes does it support?
The PD39210 supports IEEE 802.3bt Type 4 operation, delivering up to 90 W of PoE power per port at the PSE. It handles Class 0 through Class 8 powered devices, covering everything from 15.4 W Class 0 legacy IP phones to 90 W Class 8 high-power PDs such as 802.11ax tri-band access points and motorized PTZ cameras. Dual-signature detection for 4-pair PDs is included, compliant with the full 802.3bt 2018 standard.
How many PoE ports does the PD39210 manage, and what external components are needed for a complete 2-port PSE implementation?
The PD39210 manages 2 independent PoE ports from a single IC, integrating detection comparators, classification current source, and current-limit amplifiers internally. A complete 2-port PSE circuit typically requires only external sense resistors of approximately 0.25 Ω, gate-drive MOSFETs, and a bypass capacitor on each power supply rail — reducing the external BOM to roughly 10 passive components per port compared to discrete implementations requiring 30 or more components.
In an industrial automation panel using long cable runs, how does the PD39210 handle cable resistance and maintain stable power delivery to remote sensors?
The PD39210 PSE controller implements IEEE 802.3bt compliant power allocation based on physical-layer class negotiation, compensating for cable resistance by programming the port current limit to deliver the classified power at the PD connector end of up to 100 m of Cat5e cabling. At 90 W Class 8 operation over 100 m of Cat6 with approximately 12.5 Ω round-trip resistance, the PSE output voltage is automatically adjusted to maintain the minimum 42.5 V at the PD, ensuring reliable power delivery to remote IP cameras and industrial sensors across the full cable length.
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