DC2125A PoE Powered Device (PD) by Analog Devices

Status: Production
Series: LT4275
RoHS: Compliant
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The LT4275 is a pin-for-pin compatible family of IEEE 802.3 and LTPoE++ powered device (PD) controllers.The LT4275A employs a proprietary LTPoE++ classification scheme, delivering 38.7W, 52.7W, 70W or 90W of power at the PD RJ45 connector. The LT4275A is fully compatible with IEEE 802.3. The LT4275B is an IEEE 802.3at compliant, Type 2 (PoE+) PD delivering up to 25.5W. The LT4275C is an IEEE 802.3af compliant, Type 1 (PoE) PD delivering up to 13W.The LT4275 internal charge pump provides an N-channel MOSFET solution, eliminating a larger and more costly P-channel MOSFET. A low RDS(ON) MOSFET also maximizes power delivery and efficiency, reduces power and heat dissipation, and eases thermal design. Startup inrush current is adjustable with an external capacitor. The LT4275 also includes a power good output, on-board signature resistor, undervoltage lockout, and thermal protection. The LT4275A/LT4275B drives a single opto-coupler to indicate the power level of the attached PSE. Pin-selectable support for non-standard low voltage operation is provided. Auxiliary power override is supported with the AUX pin.The LT4275A can be configured to support all possible LTPoE++, 802.3at and 802.3af power levels with external component changes.

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Prices starting from US$183.89

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Features

IEEE 802.3af/at and LTPoE++™ Powered Device (PD) Controller
LTPoE++ Supports Power Levels Up to 90W
LT4275A Supports All of the Following Standards:
LTPoE++ 38.7W, 52.7W, 70W and 90W
IEEE 802.3at 25.5W Compliant
IEEE 802.3af Up to 13W Compliant
LT4275B is IEEE 802.3at/af Compliant
LT4275C is IEEE 802.3af Compliant
100V Absolute Maximum Input Voltage
Wide Junction Temperature Range (–40°C to 125°C)
Overtemperature Protection
Integrated Signature Resistor
External Hot Swap™ N-Channel MOSFET for Lowest Power Dissipation and Highest System Efficiency
Programmable Aux Power Support as Low as 9V
Optional Support of Non-Standard Low Voltage PoE
Available in 10-Lead MSOP and 3mm × 3mm DFN Packages

Last 6 months Inventory & Pricing History


Alternative Descriptions

LT4275/LT4321/LTM8027 DC to DC Converter and Switching Regulator Chip/OR Controller/Power Over Ethernet 12VDC Output Demonstration Circuit | Richardson RFPD


DC2125A Other Embedded Computers by Linear Technology

DEMO BRD POWER OVER ETHERNET & PD CTRL

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Silicon Manufacturer Linear Technology
Silicon Core Number LT4275 LT4321 LTM8027
Kit Application Type Power Management
Application Sub Type Power Over Ethernet (POE) Powered Device(PD) Controller
Kit Contents Demo Board LT4275/LT4321/LTM8027
Product Range -
SVHC No SVHC (07-Jul-2017)
Features 3A/12V Non-isolated PoE/Ideal Diode Bridge Controller/µModule Reg IEEE 802.3at/af/LTPoE++ Compliant

Frequently Asked Questions

Where can I find additional details, specifications and documents for a DC2125A?

Additional datasheets, footprints and schematics for DC2125A are listed on our Part Details page. You can also find images and similar parts to DC2125A on this page.

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What category does DC2125A fall under?

The DC2125A is listed under PoE Powered Device (PD).

Can I view similar or alternative parts?

You can view similar parts to DC2125A when available in the PoE Powered Device (PD) range under the specifications section at the bottom of the details page.

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Is the DC2125A RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

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