參數(shù)資料
型號(hào)： LTC4263CDE#PBF
廠商： Linear Technology
文件頁(yè)數(shù)： 1/24頁(yè)
文件大小： 354K
描述： IC IEEE 803.2AF CNTRLR 14DFN
產(chǎn)品培訓(xùn)模塊： Power over Ethernet
標(biāo)準(zhǔn)包裝： 91
類(lèi)型： 以太網(wǎng)供電（PoE）
應(yīng)用： 用于以太網(wǎng)供電（PoE）設(shè)備的電源接口開(kāi)關(guān)
電源電壓： 48V
工作溫度： 0°C ~ 70°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 14-WFDFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝： 14-DFN-EP（4x3）
包裝： 管件
產(chǎn)品目錄頁(yè)面： 1338 (CN2011-ZH PDF)
LTC4263
1
4263fe
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
Single IEEE 802.3af
Compliant PSE Controller
with Internal Switch
The LTC
?/DIV>
4263 is an autonomous single-channel PSE
controller for use in IEEE 802.3af compliant Power over
Ethernet systems. It includes an onboard power MOSFET,
internal inrush, current limit, and short-circuit control,
IEEE 802.3af compliant PD detection and classi cation
circuitry, and selectable AC or DC disconnect sensing.
Onboard control algorithms provide complete IEEE 802.3af
compliant operation without the need of a microcontroller.
The LTC4263 simpli es PSE implementation, needing
only a single 48V supply and a small number of passive
support components.
Programmable onboard power management circuitry
permits multiple LTC4263s to allocate and share power
in multi-port systems, allowing maximum utilization of
the 48V power supplyall without the intervention of a
host processor. The port current limit can be con gured
to automatically adjust to the detected PD class. Detec-
tion backoff timing is con gurable for either Endpoint or
Midspan operation. Built-in foldback and thermal protection
provide comprehensive fault protection.
An LED pin indicates the state of the port controlled by
the LTC4263. When run from a single 48V supply, the LED
pin can operate as a simple switching current source to
reduce power dissipation in the LED drive circuitry.
The LTC4263 is available in 14-pin 4mm ?3mm DFN and
14-pin SO packages.
n
  IEEE 802
?/DIV>
.3af Compliant
n
  Operation from a Single 48V Supply
n
  Fully Autonomous Operation without 
Microcontroller
n
  Internal MOSFET with Thermal Protection
n
  Power Management Works Across Multiple Ports 
with Simple RC Network
n
  Precision Inrush Control with Internal Sense Resistor
n
  Powered Device (PD) Detection and Classi cation
n
  AC and DC Disconnect Sensing
n
  Robust Short-Circuit Protection
n
  Pin-Selectable Detection Backoff for Midspan PSEs
n
  Classi cation Dependent I
CUT
 Current Threshold
n
  LED Driver Indicates Port On and Blinks
Status Codes
n
  Available in 14-Pin SO and 4mm ?3mm DFN Packages
n
  IEEE 802.3af Compliant Endpoint/Midspan PSEs
n
  Single-Port or Multi-Port Power Injectors
n
  Power Forwarders
n
  Low-Port Count PSEs
n
  Environment B PSEs
n
  Standalone PSEs
Single-Port Fully Autonomous PSE
4263 TA01
0.1糉
100V
0.1糉
0.1糉
100V
SMAJ58A
LED
LEGACY
MIDSPAN
PWRMGT
V
SS
V
SS
OSC
LTC4263
ISOLATED
48V SUPPLY
+

TO PORT
MAGNETICS
V
DD5
ENFCLS
SD
V
DD48
OUT
OUT
ACOUT
1A
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of
Linear Technology Corporation. Hot Swap and ThinSOT are trademarks of Linear Technology
Corporation. All other trademarks are the property of their respective owners.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC4263CDE-TRPBF 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:Single IEEE 802.3af Compliant PSE Controller with Internal Switch
LTC4263CS 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:Single IEEE 802.3af Compliant PSE Controller with Internal Switch
LTC4263CS#PBF 功能描述:IC IEEE 803.2AF CNTRLR 14-SOIC RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:119 系列:- 類(lèi)型:熱交換控制器 應(yīng)用:通用型，PCI Express? 內(nèi)部開(kāi)關(guān):無(wú) 電流限制:- 電源電壓:3.3V，12V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:80-TQFP 供應(yīng)商設(shè)備封裝:80-TQFP（12x12） 包裝:托盤(pán) 產(chǎn)品目錄頁(yè)面:1423 (CN2011-ZH PDF)
LTC4263CS#TRPBF 功能描述:IC IEEE 803.2AF CNTRLR 14-SOIC RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:100 系列:- 類(lèi)型:熱插拔開(kāi)關(guān) 應(yīng)用:通用 內(nèi)部開(kāi)關(guān):是 電流限制:可調(diào) 電源電壓:9 V ~ 13.2 V 工作溫度:-40°C ~ 150°C 安裝類(lèi)型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:10-TDFN-EP（3x3） 包裝:管件
LTC4263CS-PBF 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:Single IEEE 802.3af Compliant PSE Controller with Internal Switch
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