Datasheet Linear Technology LTC4267CGN#PBF

Manufacturer	Linear Technology
Series	LTC4267
Part Number	LTC4267CGN#PBF

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

Datasheets

PDF, 2.1 Mb, Revision: C, File uploaded: Oct 25, 2017

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Packaging

Package	SSOP-16
Package Code	GN
Package Index	05-08-1641 (GN16)

Parametrics

Number of Channels	1
Demo Boards	DC859A,DC917A,DC1145B,DC804B-A
Design Tools	LTspice Model
Export Control	no
I2C Interface	yes
IEEE-Compliant Classification	One Event
IEEE-Compliant Detection	Yes (Internal 25k resistor)
IEEE-Compliant Disconnection	N/A
Max Power	13 W
Operating Temperature Range	0 to 70 °C
PSE/PD	PD
PoE Type	1

Eco Plan

RoHS

Compliant

Design Notes

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Simple Battery Circuit Extends Power over Ethernet (PoE) Peak Current &mdash DN361
PDF, 82 Kb, File published: Feb 17, 2005
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Simple Battery Circuit Extends Power over Ethernet (POE)
Peak Current вЂ“ Design Note 361
Mark Gurries
Introduction
Power over Ethernet (PoE) is a new development that allows for the delivery of power to Ethernet-based devices
via standard Ethernet CAT5 cable, precluding the need
for wall adapters or other external power sources. The
PoE speciп¬Ѓcation deп¬Ѓnes a hardware detection protocol
where Power Sourcing Equipment (PSE) is able to identify
PoE Powered Devices (PDs), thus allowing full backwards
compatibility with non-PoE-aware (legacy) Ethernet devices. The PoE speciп¬Ѓcation also sets an upper limit
on the power that can be drawn by a PD. The problem
is: what happens when a PD must draw more power
than allowed by the PoE standard? Examples may be
the spin up of a disk drive or a period of sustained
transmission of data from an RF transmitter. If the
average power load of these applications is less than
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks
and PowerPath is a trademark of Linear Technology Corporation. All other
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Articles

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Simplify PoE Implementation with Complete PD Interface and Integrated Switching Regulator &mdash LT Journal
PDF, 188 Kb, File published: Mar 25, 2005
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DESIGN FEATURES Simplify PoE Implementation
with Complete PD Interface and
Integrated Switching Regulator
Introduction
IEEE 802.3af Power over Ethernet
(PoE) is a standard for delivering power
over Cat-5 cables, eliminating the
need for AC-adapters for equipment
plugged into the Ethernet. The two
major components in a PoE system
are Power Sourcing Equipment (PSE),
which deliver power, and Powered Devices (PD), which receive and use the
power. A PSE will not deliver power to
the load unless it detects a valid signature resistance, which distinguishes a
compliant PD from a device that cannot
receive power. Once the PD receives
power, it must also convert the вЂ“48V
PoE efп¬Ѓciently to a suitable power
supply voltage. Typical PD designs
employ two ICs for these tasks. An
obvious way to simplify PD designs
would be to integrate the interface
and DC-DC conversion circuitry into …

Model Line

Series: LTC4267 (8)

LTC4267CDHC#PBF LTC4267CDHC#TRPBF LTC4267CGN#PBF LTC4267CGN#TRPBF LTC4267IDHC#PBF LTC4267IDHC#TRPBF LTC4267IGN#PBF LTC4267IGN#TRPBF

Manufacturer's Classification

Monitor, Control and Protection > Power-over-Ethernet (PoE) Interface Controllers > PoE Powered Device (PD)

Other Names:

LTC4267CGNPBF, LTC4267CGN PBF

Slices

Microcontrollers