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LTC4263IDE-1-TRPBF Datasheet(PDF) 1 Page - Linear Technology |
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LTC4263IDE-1-TRPBF Datasheet(HTML) 1 Page - Linear Technology |
1 / 20 page LTC4263-1 1 42631fa TYPICAL APPLICATION FEATURES APPLICATIONS DESCRIPTION High Power Single PSE Controller with Internal Switch The LTC ®4263-1 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 detec- tion 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 simplifies PSE implementa- tion, 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 indi- cates the state of the port and detection backoff timing is configurable for either endpoint or midspan operation. The LTC4263-1 is available in a miniature 14-pin 4mm × 3mm DFN package. n 30W PSE Output Power n IEEE 802 ®.3af Compatible n Operation from a Single 56V Supply n Fully Autonomous Operation Without a Microcontroller n Internal MOSFET with Thermal Protection n Precision Inrush Control with Internal Sense Resistor n Forced Current PD Detection for Noise Immunity n AC and DC Disconnect Sensing n Legacy PD Detection n Robust Short-Circuit Protection n Pin-Selectable Detection Backoff for Midspan PSEs n LED Driver Indicates Port On and Blinks Status Codes n Available in a Miniature14-Pin 4mm × 3mm DFN Package n High Power Endpoint/Midspan PSEs n Single-Port or Multi-Port Power Injectors n Low Port Count PSEs n Environment B PSEs n Standalone PSEs Single-Port Fully Autonomous High Power PSE 42631 TA01 0.1μF 100V 0.1μF 0.1μF 100V SMAJ58A LED LEGACY MIDSPAN VSS VSS VSS OSC LTC4263-1 ISOLATED 56V SUPPLY + – TO PORT MAGNETICS VDD5 VSS SD VDD48 OUT OUT ACOUT 1A L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. |
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