- 您现在的位置：买卖IC网 > PDF目录44997 > LTC4274AIUHF-1#TRPBF (LINEAR TECHNOLOGY CORP) POWER SUPPLY MANAGEMENT CKT, PQCC38 PDF资料下载
参数资料
| 型号： | LTC4274AIUHF-1#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | POWER SUPPLY MANAGEMENT CKT, PQCC38 |
| 封装： | 7 X 5 MM, LEAD FREE, PLASTIC, MO-220WHKD, QFN-38 |
| 文件页数： | 1/28页 |
| 文件大小： | 313K |
| 代理商： | LTC4274AIUHF-1#TRPBF |
当前第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页
LTC4274A/LTC4274C
1
4274acf
n
LTPoE++ PSE Switches/Routers
n
LTPoE++ PSE Midspans
n
IEEE 802.3at Type 1 PSE Switches/Routers
n
IEEE 802.3at Type 1 PSE Midspans
ApplicAtions
FeAtures
Description
Single PoE/PoE+/LTPoE++
PSE Controller
The LTC4274A is a single Power Sourcing Equipment
(PSE)controllercapableofdeliveringupto90WofLTPoE++
power to a compatible LTPoE++ Powered Device (PD). A
proprietarydetection/classificationschemeallowsmutual
identification between a LTPoE++ PSE and LTPoE++ PD
whileremainingcompatibleandinteroperablewithexisting
Type 1 (13W) and Type 2 (25.5W) PDs. The LTC4274A
feature set is a superset of the popular LTC4274. These
PSE controllers feature low-RON external MOSFETs and
0.25Ω sense resistors which are especially important at
the LTPoE++ current levels to maintain the lowest possible
heat dissipation.
TheLTC4274CtargetsfullyautomaticPSEsystemspower-
ing Type 1 (up to 13W) PDs.
Advanced power management features include: a 14-bit
currentmonitoringADC,DAC-programmablecurrentlimit,
and versatile quick port shutdown. PD Discovery uses
a proprietary dual-mode 4-point detection mechanism
ensuring excellent immunity from false PD detection.
The LTC4274A/LTC4274C includes an I2C serial interface
operable up to 1MHz.
The LTC4274A/LTC4274C is available in multiple power
grades, allowing delivered PD power of 13W, 25.5W, 35W,
45W, 70W and 90W. These controllers are available in a
38-pin 5mm × 7mm QFN package.
n
Compliant with IEEE 802.3at Type 1 and 2
n
Low Power Dissipation
0.25Ω Sense Resistance Per Channel
n
Very High Reliability 4-Point PD Detection
2-Point Forced Voltage
2-Point Forced Current
n
High Capacitance Legacy Device Detection
n
1MHz I2C Compatible Serial Control Interface
n
Midspan Backoff Timer
n
Supports 2-Pair and 4-Pair Output Power
n
Available in Multiple Power Grades
LTC4274A-1: LTPoE++ 35W
LTC4274A-2: LTPoE++ 45W
LTC4274A-3: LTPoE++ 70W
LTC4274A-4: LTPoE++ 90W
LTC4274C: PoE 13W
n
Available in 38-Pin 5mm × 7mm QFN Package
typicAl ApplicAtion
Complete Single-Port Ethernet High Power Source
L
, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
LTPoE++ are trademarks of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
4274AC TA01
SCL
SDAIN
SDAOUT
AD0
AD1
AD2
AD3
AGND
VEE SENSE
–54V
1F
100V
SMAJ58A
GATE OUT
PORT
0.22F
100V
S1B
–54V
DGND
VDD
INT
SHDN
AUTO
MSD
RESET
MID
0.1F
3.3V
LTC4274A/LTC4274C
相关PDF资料 |
PDF描述 |
|---|---|
| LTC4280IUFD | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC24 |
| LTC4312IDE#TRPBF | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14 |
| LTC4312CDE#PBF | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14 |
| LTC4312IMS#TRPBF | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16 |
| LTC4352CMS#PBF | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO12 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4274AIUHF-2#PBF | 功能描述:IC CONTROLLER POE 38-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:119 系列:- 类型:热交换控制器 应用:通用型，PCI Express? 内部开关:无 电流限制:- 电源电压:3.3V，12V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:80-TQFP 供应商设备封装:80-TQFP（12x12） 包装:托盘 产品目录页面:1423 (CN2011-ZH PDF) |
| LTC4274AIUHF-2#TRPBF | 功能描述:IC CONTROLLER POE 38-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:119 系列:- 类型:热交换控制器 应用:通用型，PCI Express? 内部开关:无 电流限制:- 电源电压:3.3V，12V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:80-TQFP 供应商设备封装:80-TQFP（12x12） 包装:托盘 产品目录页面:1423 (CN2011-ZH PDF) |
| LTC4274AIUHF-3#PBF | 功能描述:IC CONTROLLER POE 38-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:119 系列:- 类型:热交换控制器 应用:通用型，PCI Express? 内部开关:无 电流限制:- 电源电压:3.3V，12V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:80-TQFP 供应商设备封装:80-TQFP（12x12） 包装:托盘 产品目录页面:1423 (CN2011-ZH PDF) |
| LTC4274AIUHF-3#TRPBF | 功能描述:IC CONTROLLER POE 38-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:119 系列:- 类型:热交换控制器 应用:通用型，PCI Express? 内部开关:无 电流限制:- 电源电压:3.3V，12V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:80-TQFP 供应商设备封装:80-TQFP（12x12） 包装:托盘 产品目录页面:1423 (CN2011-ZH PDF) |
| LTC4274AIUHF-4#PBF | 功能描述:IC CONTROLLER POE 38-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:119 系列:- 类型:热交换控制器 应用:通用型，PCI Express? 内部开关:无 电流限制:- 电源电压:3.3V，12V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:80-TQFP 供应商设备封装:80-TQFP（12x12） 包装:托盘 产品目录页面:1423 (CN2011-ZH PDF) |
发布紧急采购，3分钟左右您将得到回复。