LTC4263-1 - High Power Single PSE Controller with Internal Switch

Features

  • 30W PSE Output Power
  • IEEE 802.3af Compatible
  • Operation from a Single 56V Supply
  • Fully Autonomous Operation Without a Microcontroller
  • Internal MOSFET with Thermal Protection
  • Precision Inrush Control with Internal Sense Resistor
  • Forced Current PD Detection for Noise Immunity
  • AC and DC Disconnect Sensing
  • Legacy PD Detection
  • Robust Short-Circuit Protection
  • Pin-Selectable Detection Backoff for Midspan PSEs
  • LED Driver Indicates Port On and Blinks Status Codes
  • Available in a Miniature14-Pin 4mm × 3mm DFN Package

Typical Application

LTC4263-1 Typical Application

Description

The LTC4263-1 is a high power, single PSE controller for use in Power over Ethernet systems. The internal current limit and short-circuit protection are designed to provide up to 30W of PSE output power for power hungry PoE applications such as WAPs, security cameras and RFID readers.

The LTC4263-1 includes IEEE 802.3af compliant PD detection circuitry along with selectable AC and DC disconnect sensing, allowing seamless operation in conventional IEEE 802.3af systems as well as propriety, high power applications. The LTC4263-1 simplifi es PSE implementation, needing only a single supply and a small number of passive support components. Onboard control algorithms provide complete PSE functionality without the need of a microcontroller and built-in foldback and thermal shutdown provide comprehensive fault protection. An LED pin indicates the state of the port and detection backoff timing is confi gurable for either endpoint or midspan operation.

The LTC4263-1 is available in a miniature 14-pin 4mm × 3mm DFN package.

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

SO-14, DFN-14

LTC4263-1 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC4263CDE DFN 14 C $4.21 $2.95 View
LTC4263CDE#PBF DFN 14 C $4.21 $2.95 View
LTC4263CDE#TR DFN 14 C $3.01 View
LTC4263CDE#TRPBF DFN 14 C $3.01 View
LTC4263CDE-1#PBF DFN 14 C $4.21 $2.95 View
LTC4263CDE-1#TRPBF DFN 14 C $3.01 View
LTC4263CS SO 14 C $4.21 $2.95 View
LTC4263CS#PBF SO 14 C $4.21 $2.95 View
LTC4263CS#TR SO 14 C $3.01 View
LTC4263CS#TRPBF SO 14 C $3.01 View
LTC4263IDE DFN 14 I $5.05 $3.54 View
LTC4263IDE#PBF DFN 14 I $5.05 $3.54 View
LTC4263IDE#TR DFN 14 I $3.60 View
LTC4263IDE#TRPBF DFN 14 I $3.60 View
LTC4263IDE-1#PBF DFN 14 I $5.05 $3.54 View
LTC4263IDE-1#TRPBF DFN 14 I $3.60 View
LTC4263IS SO 14 I $5.05 $3.54 View
LTC4263IS#PBF SO 14 I $5.05 $3.54 View
LTC4263IS#TR SO 14 I $3.60 View
LTC4263IS#TRPBF SO 14 I $3.60 View
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* The USA 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 Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1214A LTC4263-1 High Power Single PSE Controller. $75.00
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Applications

  • High Power Endpoint/Midspan PSEs
  • Single-Port or Multi-Port Power Injectors
  • Low Port Count PSEs
  • Environment B PSEs
  • Standalone PSEs

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