Datasheet > LTC4274

LTC4274

更新时间： 2024-09-18 14:58:15

品牌	Logo	应用领域
亚德诺 - ADI		控制器
页数	文件大小	规格书
28页	395K
描述
单通道 PoE+ PSE 控制器

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LTC4274 数据手册

LTC4274

Single PoE PSE Controller

FeAtures

Description

Compliant with IEEE 802.3at Type 1 and 2

The LTC^®4274 is a single power sourcing equipment con-

troller designed for use in IEEE 802.3 Type 1 and Type 2

(high power) compliant Power over Ethernet systems.

External power MOSFETs enhance system reliability and

minimizechannelresistance,cuttingpowerdissipationand

eliminating the need for heatsinks even at Type 2 power

levels. External power components also allow use at very

high power levels while remaining otherwise compatible

withtheIEEEstandard. 80V-ratedportpinsproviderobust

protection against external faults.

0.34Ω Total Channel Resistance

130mW/Port at 600mA

Advanced Power Management

8-Bit Programmable Current Limit (I

)

LIM

7-Bit Programmable Overload Currents (I

)

CUT

Fast Shutdown

14.5-Bit Port Current/Voltage Monitoring

2-Event Classiﬁcation

Very High Reliability 4-Point PD Detection

2-Point Forced Voltage

2-Point Forced Current

The LTC4274 includes advanced power management

features, including current and voltage readback and pro-

High Capacitance Legacy Device Detection

grammable I

and I thresholds. Available C libraries

CUT

LIM

LTC4259A-1 and LTC4266 SW Compatible

simplifysoftwaredevelopment;anoptionalAUTOpinmode

provides fully IEEE-compliant standalone operation with

no software required. Proprietary 4-point PD detection

circuitry minimizes false PD detection while supporting

legacy phone operation. Midspan operation is supported

with built-in 2-event classification and backoff timing.

1MHz I C Compatible Serial Control Interface

Midspan Backoff Timer

Supports Proprietary Power Levels Above 25W

Available in 38-Pin 5mm × 7mm QFN Package

ApplicAtions

Host communication is via a 1MHz I C serial interface.

PSE Switches/Routers

PSE Midspans

The LTC4274 is available in a 5mm × 7mm QFN package

that significantly reduces board space compared with

competing solutions.

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and

ThinSOT and LTPoE are trademarks of Analog Devices, Inc. All other trademarks are the

property of their respective owners.

typicAl ApplicAtion

Complete Ethernet High Power Source

10Ω

AD0 AD1 AD2 AD3

SCL SDAIN SDAOUT INT

3.3V

AUTO

MSD

RESET

MID

SHDN

0.1µF

SMAJ5.0A

10µF

DGND

AGND

LTC4274

10Ω

SENSE GATE OUT

SMAJ58A

1µF

BULK

0.22µF

100V

S1B

TVS

BULK

PORT

–54V

4274 TA01

–54V

4274ff

For more information www.linear.com/LTC4274

12 3 4 5 6 7...28

中文翻译

下载PDF

与LTC4274相关器件

型号	品牌	获取价格	描述	数据表
LTC4274_1	Linear	获取价格	Single PoE+ PSE Controller High Capacitance Legacy Device Detection
LTC4274A	Linear	获取价格	12-Port PoE/PoE+/LTPoE++ PSE Controller
LTC4274A	ADI	获取价格	单通道 PoE / PoE+ / LTPoE++ PSE 控制器
LTC4274A_15	Linear	获取价格	Single PoE/PoE/LTPoE PSE Controller
LTC4274AIUHF-1#PBF	Linear	获取价格	LTC4274A/LTC4274C - Single PoE/PoE+/LTPoE++ PSE Controller; Package: QFN; Pins: 38; Temper
LTC4274AIUHF-2#TRPBF	Linear	获取价格	LTC4274A/LTC4274C - Single PoE/PoE+/LTPoE++ PSE Controller; Package: QFN; Pins: 38; Temper
LTC4274AIUHF-3#PBF	Linear	获取价格	LTC4274A/LTC4274C - Single PoE/PoE+/LTPoE++ PSE Controller; Package: QFN; Pins: 38; Temper
LTC4274AIUHF-4#PBF	Linear	获取价格	LTC4274A/LTC4274C - Single PoE/PoE+/LTPoE++ PSE Controller; Package: QFN; Pins: 38; Temper
LTC4274C	Linear	获取价格	12-Port PoE/PoE+/LTPoE++ PSE Controller
LTC4274C_15	Linear	获取价格	Single PoE/PoE/LTPoE PSE Controller

与LTC4274相关文章

摩尔斯微电子在美国约书亚树国家公园测试 Wi-Fi HaLow
2024-09-18

16
贸泽上架Tallysman TW5386智能GNSS天线
2024-09-18

14
SL74HC10N：高性能三输入与非门解析
2024-09-03

93
AIC1781A 电池充电控制器深度解析
2024-09-03

82

产品中心

服务支持

精选活动

关于我们

帮助中心

LTC4274

LTC4274 数据手册

与LTC4274相关器件

与LTC4274相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

LTC4274

LTC4274 数据手册

与LTC4274相关器件

与LTC4274相关文章

您还可以找

您在本页遇到什么问题？