LTC4267-1
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LTC4267-1

Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator

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LTspice LTC4267-1 - Power-over-Ethernet (PoE) Interface Controllers Download 4.52 KB
Part Models 4
1ku List Price Starting From $1.97
Features
  • Complete Power Interface Port for IEEE 802®.3af Powered Device (PD)
  • On-board 100V, UVLO Switch
  • Precision Dual Level Inrush Current Limit
  • Integrated Current Mode Switching Regulator
  • On-board 25k Signature Resistor with Disable
  • Programmable Classification Current (Class 0-4)
  • Thermal Overload Protection
  • Power Good Signal
  • Integrated Error Amplifier and Voltage Reference
  • Low Profile 16-Pin SSOP Package
Additional Details
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The LTC4267-1 combines an IEEE 802.3af compliant Powered Device (PD) interface with a current mode switching regulator, providing a complete power solution for PD applications. The LTC4267-1 integrates the 25k signature resistor, classification current source, thermal overload protection, signature disable and power good signal along with an undervoltage lockout optimized for use with the IEEE-required diode bridge. The LTC4267-1 provides an increased operational current limit, maximizing power available for class 3 applications.

The current mode switching regulator is designed for driving a 6V rated N-channel MOSFET and features programmable slope compensation, soft-start, and constant frequency operation, minimizing noise even with light loads. The LTC4267-1 includes an on-board error amplifier and voltage reference allowing use in both isolated and nonisolated configurations.

The LTC4267-1 is available in a space saving, low profile 16-pin SSOP package.

Applications

  • IP Phone Power Management
  • Wireless Access Points
  • Security Cameras
  • Power over Ethernet
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LTspice LTC4267-1 - Power-over-Ethernet (PoE) Interface Controllers Download 4.52 KB
Part Models 4
1ku List Price Starting From $1.97
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LTC4267-1

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UPDATED 01/21/2013
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LTC4267-1: Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator Data Sheet

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UPDATED 03/28/2013
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LTC4267-1: スイッチング・レギュレータ搭載のPower over Ethernet IEEE 802.3af PDインターフェイス データシート

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UPDATED 03/26/2018
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UPDATED 03/23/2018
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PoE Consortium Clause # 33 PD Conformance Report v1.0 redirect icon

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UPDATED 03/23/2018
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PoE Consortium Interoperability Report LTC4267 redirect icon

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Documentation

Product Selector Card 2

Power over Ethernet Solutions
PoE PD Controllers

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2018-08-20

02:51

Next Generation Power Over Ethernet

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC4267CGN-1#PBF 16-Lead SSOP (Narrow 0.15 Inch) external-link
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LTC4267CGN-1#TRPBF 16-Lead SSOP (Narrow 0.15 Inch) external-link
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LTC4267IGN-1#PBF 16-Lead SSOP (Narrow 0.15 Inch) external-link
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  • Material Declaration external-link
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LTC4267IGN-1#TRPBF 16-Lead SSOP (Narrow 0.15 Inch) external-link
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Oct 3, 2024

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(QSOP/SSOP PKG) Migrating Bottom Trace Code Marking to Top Side Laser Marking

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Laser Top Mark for 16QSOP Assembled in ADPG [PNG]

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Oct 3, 2024

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(QSOP/SSOP PKG) Migrating Bottom Trace Code Marking to Top Side Laser Marking

LTC4267CGN-1#PBF

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Laser Top Mark for 16QSOP Assembled in ADPG [PNG]

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Software & Part Ecosystem

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Tools & Simulations 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

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LTC4267-1 - Power-over-Ethernet (PoE) Interface Controllers Download

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