Datasheet Linear Technology LT4275BHMS#TRPBF — Datenblatt

Hersteller	Linear Technology
Serie	LT4275
Artikelnummer	LT4275BHMS#TRPBF

LTPoE ++ / PoE + / PoE PD Controller

Datenblätter

PDF, 222 Kb, Datei hochgeladen: Oct 25, 2017

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Preise

Verpackung

Package	MS-10
Package Code	MS
Package Index	05-08-1661

Parameter

Number of Channels	1
Demo Boards	DC2093A-A,DC2093A-B,DC2093A-C,DC2125A
Design Tools	LTspice Model
Export Control	no
IEEE-Compliant Classification	One Event, Two Event
IEEE-Compliant Detection	Yes (Internal 25k resistor)
IEEE-Compliant Disconnection	N/A
Max Power	90 W
Operating Temperature Range	-40 to 125 °C
PSE/PD	PD
PoE Type	1, 2, LTPoE++

Öko-Plan

RoHS

Compliant

Konstruktionshinweise

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Active Bridge Rectifiers Reduce Heat Dissipation within PoE Security Cameras &mdash DN519
PDF, 106 Kb, Datei veröffentlicht: Aug 28, 2013
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Active Bridge Rectifiers Reduce Heat Dissipation within PoE
Security Cameras вЂ“ Design Note 519
Ryan Huff
Introduction
Power over Ethernet (PoE) has been embraced by the
video surveillance industry as a solution to an age-old
problem: complicated cabling. For instance, a basic,
traditional fixed-view security camera requires two
cables: one for power (10W to 15W from a 24V AC
or 12V DC), and a separate, coax cable for the video
signal. With PoE, a single Ethernet cable carries both
video data and power. Everything is simplified. Right?
Not quite. To meet compatibility with existing systems,
camera manufacturers must produce PoE-enabled
cameras that are also compatible with legacy power
sourcesвЂ”they must accept PoE 37V to 57V DC from
an RJ-45 jack or 24V AC, +12V DC, or вЂ“12V DC from
an auxiliary power connector.
The Old Way Loses Power
Figure 1 shows the power architecture used by many
PoE camera manufacturers to solve this problem. A
full-bridge diode rectifier after the auxiliary (old-school)
input produces positive DC power from either 24V AC, …

Modellreihe

Serie: LT4275 (24)

LT4275AHDD#PBF LT4275AHDD#TRPBF LT4275AHMS#PBF LT4275AHMS#TRPBF LT4275AIDD#PBF LT4275AIDD#TRPBF LT4275AIMS#PBF LT4275AIMS#TRPBF LT4275BHDD#PBF LT4275BHDD#TRPBF LT4275BHMS#PBF LT4275BHMS#TRPBF LT4275BIDD#PBF LT4275BIDD#TRPBF LT4275BIMS#PBF LT4275BIMS#TRPBF LT4275CHDD#PBF LT4275CHDD#TRPBF LT4275CHMS#PBF LT4275CHMS#TRPBF LT4275CIDD#PBF LT4275CIDD#TRPBF LT4275CIMS#PBF LT4275CIMS#TRPBF

Herstellerklassifikation

Monitor, Control and Protection > Power-over-Ethernet (PoE) Interface Controllers > PoE Powered Device (PD)
Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Power Management

Andere Namen:

LT4275BHMSTRPBF, LT4275BHMS TRPBF

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