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LTC4263IDE-1-TRPBF Datasheet(PDF) 1 Page - Linear Technology

Part # LTC4263IDE-1-TRPBF
Description  High Power Single PSE Controller with Internal Switch
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4263IDE-1-TRPBF Datasheet(HTML) 1 Page - Linear Technology

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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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