Datasheet Linear Technology LTC4267

Manufacturer	Linear Technology
Series	LTC4267

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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Prices

Packaging

	LTC4267CDHC#PBF	LTC4267CDHC#TRPBF	LTC4267CGN#PBF	LTC4267CGN#TRPBF	LTC4267IDHC#PBF	LTC4267IDHC#TRPBF	LTC4267IGN#PBF	LTC4267IGN#TRPBF
N	1	2	3	4	5	6	7	8
Package	5x3 DFN-16 Package Outline Drawing	5x3 DFN-16 Package Outline Drawing	SSOP-16 Package Outline Drawing	SSOP-16 Package Outline Drawing	5x3 DFN-16 Package Outline Drawing	5x3 DFN-16 Package Outline Drawing	SSOP-16 Package Outline Drawing	SSOP-16 Package Outline Drawing
Package Code	DHC	DHC	GN	GN	DHC	DHC	GN	GN
Package Index	05-08-1706	05-08-1706	05-08-1641 (GN16)	05-08-1641 (GN16)	05-08-1706	05-08-1706	05-08-1641 (GN16)	05-08-1641 (GN16)
Pin Count	16	16	16	16	16	16	16	16

Parametrics

Parameters / Models	LTC4267CDHC#PBF	LTC4267CDHC#TRPBF	LTC4267CGN#PBF	LTC4267CGN#TRPBF	LTC4267IDHC#PBF	LTC4267IDHC#TRPBF	LTC4267IGN#PBF	LTC4267IGN#TRPBF
Number of Channels	1	1	1	1	1	1	1	1
Demo Boards	DC859A,DC917A,DC1145B,DC804B-A	DC859A,DC917A,DC1145B,DC804B-A	DC859A,DC917A,DC1145B,DC804B-A	DC859A,DC917A,DC1145B,DC804B-A	DC859A,DC917A,DC1145B,DC804B-A	DC859A,DC917A,DC1145B,DC804B-A	DC859A,DC917A,DC1145B,DC804B-A	DC859A,DC917A,DC1145B,DC804B-A
Design Tools	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model
Export Control	no	no	no	no	no	no	no	no
I2C Interface	yes	yes	yes	yes	yes	yes	yes	yes
IEEE-Compliant Classification	One Event	One Event	One Event	One Event	One Event	One Event	One Event	One Event
IEEE-Compliant Detection	Yes (Internal 25k resistor)	Yes (Internal 25k resistor)	Yes (Internal 25k resistor)	Yes (Internal 25k resistor)	Yes (Internal 25k resistor)	Yes (Internal 25k resistor)	Yes (Internal 25k resistor)	Yes (Internal 25k resistor)
IEEE-Compliant Disconnection	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Max Power, W	13	13	13	13	13	13	13	13
Operating Temperature Range, °C	0 to 70	0 to 70	0 to 70	0 to 70	-40 to 85	-40 to 85	-40 to 85	-40 to 85
PSE/PD	PD	PD	PD	PD	PD	PD	PD	PD
PoE Type	1	1	1	1	1	1	1	1

Eco Plan

	LTC4267CDHC#PBF	LTC4267CDHC#TRPBF	LTC4267CGN#PBF	LTC4267CGN#TRPBF	LTC4267IDHC#PBF	LTC4267IDHC#TRPBF	LTC4267IGN#PBF	LTC4267IGN#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Design Notes

Download
Simple Battery Circuit Extends Power over Ethernet (PoE) Peak Current &mdash DN361
PDF, 82 Kb, File published: Feb 17, 2005
Extract from the document
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
trademarks are the property of their respective owners. L1
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Articles

Download
Simplify PoE Implementation with Complete PD Interface and Integrated Switching Regulator &mdash LT Journal
PDF, 188 Kb, File published: Mar 25, 2005
Extract from the document
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)

EMS supplier

Slices

Microcontrollers