Alternative Parts
Overview
Features and Benefits
- IEEE 802.3af Compliant
- Operation from a Single 48V Supply
- Fully Autonomous Operation without Microcontroller
- Internal MOSFET with Thermal Protection
- Power Management Works Across Multiple Ports with Simple RC Network
- Precision Inrush Control with Internal Sense Resistor
- Powered Device (PD) Detection and Classification
- AC and DC Disconnect Sensing
- Robust Short-Circuit Protection
- Pin-Selectable Detection Back-off for Midspan PSEs
- Classification Dependent ICUT Current Threshold
- LED Driver Indicates Port On and Blinks Status Codes
- Available in 14-Pin SO and 4mm × 3mm DFN Packages
Product Details
The LTC4263 is an autonomous single-channel PSE controller for use in IEEE 802.3af compliant Power over Ethernet systems. It includes an on-board power MOSFET, internal inrush, current limit, and short-circuit control, IEEE 802.3af compliant PD detection and classification circuitry, and selectable AC or DC disconnect sensing. On-board control algorithms provide complete IEEE 802.3af compliant operation without the need of a microcontroller. The LTC4263 simplifies PSE implementation, needing only a single 48V supply and a small number of passive support components.
Programmable on-board power management circuitry permits multiple LTC4263s to allocate and share power in multi-port systems, allowing maximum utilization of the 48V power supply—all without the intervention of a host processor. The port current limit can be configured to automatically adjust to the detected PD class. Detection back-off timing is configurable for either Endpoint or Midspan operation. Built-in foldback and thermal protection provide comprehensive fault protection.
An LED pin indicates the state of the port controlled by the LTC4263. When run from a single 48V supply, the LED pin can operate as a simple switching current source to reduce power dissipation in the LED drive circuitry.
The LTC4263 is available in 14-pin 4mm × 3mm DFN and 14-pin SO packages.
Applications
- IEEE 802.3af Compliant Endpoint/Midspan PSEs
- Single-Port or Multi-Port Power Injectors
- Power Forwarders
- Low-Port Count PSEs
- Environment B PSEs
- Standalone PSEs
Product Categories
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
Documentation & Resources
-
PoE Consortium Clause # 33 PSE Conformance Report3/26/2018
-
R413 Reliability Data3/26/2018
-
PoE Consortium Interoperability Report- Midspan3/26/2018
-
PoE Consortium Interoperability Report Endpoint3/23/2018
-
DC981A/B - Demo Manual (Rev. A)12/16/2014
-
Power over Ethernet Solutions4/4/2017
-
PoE PD Controllers6/22/2015
-
PoE+ for the Power Hungry4/28/2010
-
Next Generation Power Over Ethernet6/22/2023
Product Recommendations
LTC4263 Companion Parts
Recommended Related Parts
Design Resources
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 Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
---|---|---|---|---|
LTC4263CDE#PBF | Material Declaration | Reliability Data | 14-Lead DFN (4mm x 3mm w/ EP) | |
LTC4263CDE#TRPBF | Material Declaration | Reliability Data | 14-Lead DFN (4mm x 3mm w/ EP) | |
LTC4263CS#PBF | Material Declaration | Reliability Data | 14-Lead SOIC (Narrow 0.15 Inch) | |
LTC4263CS#TRPBF | Material Declaration | Reliability Data | 14-Lead SOIC (Narrow 0.15 Inch) | |
LTC4263IDE#PBF | Material Declaration | Reliability Data | 14-Lead DFN (4mm x 3mm w/ EP) | |
LTC4263IDE#TRPBF | Material Declaration | Reliability Data | 14-Lead DFN (4mm x 3mm w/ EP) | |
LTC4263IS#PBF | Material Declaration | Reliability Data | 14-Lead SOIC (Narrow 0.15 Inch) | |
LTC4263IS#TRPBF | Material Declaration | Reliability Data | 14-Lead SOIC (Narrow 0.15 Inch) | |
Wafer Fabrication Data | PoE Consortium Interoperability Report Endpoint |
PCN-PDN Information
Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.
Support & Discussions
Sample & Buy
Ordering FAQs
See our Ordering FAQs for answers to questions about online orders, payment options and more.
Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
List Pricing
(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Lead Times
Please see the latest communication from our CCO regarding lead times.
Sampling
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.
Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.