Datasheet Linear Technology LTC4269-2

Manufacturer	Linear Technology
Series	LTC4269-2

IEEE 802.3at High Power PD and Synchronous Forward Controller with AUX Support

Datasheets

PDF, 398 Kb, Revision: B, File uploaded: Oct 25, 2017

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Prices

Packaging

	LTC4269CDKD-2#PBF	LTC4269CDKD-2#TRPBF	LTC4269IDKD-2#PBF	LTC4269IDKD-2#TRPBF
N	1	2	3	4
Package	7x4 DFN-32 Package Outline Drawing	7x4 DFN-32 Package Outline Drawing	7x4 DFN-32 Package Outline Drawing	7x4 DFN-32 Package Outline Drawing
Package Code	DKD	DKD	DKD	DKD
Package Index	05-08-1734	05-08-1734	05-08-1734	05-08-1734
Pin Count	32	32	32	32

Parametrics

Parameters / Models	LTC4269CDKD-2#PBF	LTC4269CDKD-2#TRPBF	LTC4269IDKD-2#PBF	LTC4269IDKD-2#TRPBF
Number of Channels	1	1	1	1
Demo Boards	DC1351B	DC1351B	DC1351B	DC1351B
Design Tools	LTspice Model	LTspice Model	LTspice Model	LTspice Model
Export Control	no	no	no	no
I2C Interface	yes	yes	yes	yes
IEEE-Compliant Classification	One Event, Two Event	One Event, Two Event	One Event, Two Event	One Event, Two Event
IEEE-Compliant Detection	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
Max Power, W	25.5	25.5	25.5	25.5
Operating Temperature Range, °C	0 to 70	0 to 70	-40 to 85	-40 to 85
PSE/PD	PD	PD	PD	PD
PoE Type	2	2	2	2

Eco Plan

	LTC4269CDKD-2#PBF	LTC4269CDKD-2#TRPBF	LTC4269IDKD-2#PBF	LTC4269IDKD-2#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant

Articles

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PD Controller ICs with Integrated Flyback or Forward Controllers Meet Demands of 25.5W PoE+ &mdash LT Journal
PDF, 761 Kb, File published: Sep 1, 2009
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LвЂ‰DESIGN FEATURES PD Controller ICs with Integrated
Flyback or Forward Controllers Meet
by Ryan Huff
Demands of 25.5W PoE+
Introduction
The IEEE 802.3af Power over Ethernet (PoE) standard allows a powered
device (PD), such as an internet
protocol (IP) telephone, to draw up to
12.95W from an Ethernet cable. When
the 802.3af standard was drafted,
12.95W appeared sufficient to cover
the immediately imaginable range of
PD products (primarily IP phones).
Of course, application developers
are always far more innovative than
standards committees anticipate, so
new power-hungry applications for
PoE immediately started to appear,
such as dual-radio IEEE 802.11a/g
and 802.11n wireless access points,
security cameras with pan/tilt/zoom
motors, and color LCD IP video
phones. 12.95W was suddenly not …

Model Line

Series: LTC4269-2 (4)

LTC4269CDKD-2#PBF LTC4269CDKD-2#TRPBF LTC4269IDKD-2#PBF LTC4269IDKD-2#TRPBF

Manufacturer's Classification

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

EMS supplier

Slices

Microcontrollers