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參數資料
| 型號： | LTC4266IUHF#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | POWER SUPPLY MANAGEMENT CKT, PQCC38 |
| 封裝： | 5 X 7 MM, LEAD FREE, PLASTIC, MO-220WHKD, QFN-38 |
| 文件頁數： | 1/30頁 |
| 文件大小： | 414K |
| 代理商： | LTC4266IUHF#PBF |
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LTC4266
4266fa
n
HighPowerPSESwitches/Routers
n
HighPowerPSEMidspans
ApplicAtions
FeAtures
Description
Quad IEEE 802.3at Power
Over Ethernet Controller
TheLTC4266isaquadPSEcontrollerdesignedforuse
inIEEE802.3Type1andType2(highpower)compliant
PoweroverEthernetsystems.ExternalpowerMOSFETs
enhancesystemreliabilityandminimizechannelresis-
tance,cuttingpowerdissipationandeliminatingtheneed
forheatsinksevenatType2powerlevels.Externalpower
componentsalsoallowuseatveryhighpowerlevelswhile
remainingotherwisecompatiblewiththeIEEEstandard.
80V-rated port pins provide robust protection against
externalfaults.
The LTC4266 includes advanced power management
features, including current and voltage readback and
programmableICUTandILIMthresholds.AvailableClibrar-
iessimplifypower-managementsoftwaredevelopment;
an optional AUTO mode provides fully IEEE-compliant
standaloneoperationwithnosoftwarerequired.Proprietary
4-pointPDdetectioncircuitryminimizesfalsePDdetec-
tionwhilesupportinglegacyphoneoperation.Midspan
operationissupportedwithbuilt-in2-eventclassification
andbackofftiming.Hostcommunicationisviaa1MHz
I2Cserialinterface.
TheLTC4266isavailableina5mm
×7mmQFNpackage
that significantly reduces board space compared with
competingsolutions.Alegacy-compatible36-pinSSOP
packageisalsoavailable.
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FourIndependentPSEChannels
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CompliantwithIEEE802.3atType1and2
n
0.34ΩTotalChannelResistance
130mW/Portat600mA
n
AdvancedPowerManagement
8-BitProgrammableCurrentLimit(ILIM)
7-BitProgrammableOverloadCurrents(ICUT)
FastShutdownofPreselectedPorts
14.5-BitPortCurrent/VoltageMonitoring
2-EventClassification
n
VeryHighReliability4-PointPDDetection:
2-PointForcedVoltage
2-PointForcedCurrent
n
HighCapacitanceLegacyDeviceDetection
n
LTC4259A-1andLTC4258PinandSWCompatible
n
1MHzI2CCompatibleSerialControlInterface
n
MidspanBackoffTimer
n
SupportsProprietaryPowerLevelsAbove25W
n
Availablein38-Pin5mm
×7mmQFNand36-Pin
SSOPPackages
typicAl ApplicAtion
Complete4-PortEthernetHighPowerSource
L
,LT,LTC,LTM,LinearTechnologyandtheLinearlogoareregisteredtrademarksand
ThinSOTisatrademarkofLinearTechnologyCorporation.Allothertrademarksaretheproperty
oftheirrespectiveowners.
4266 TA01
SCL
SDAIN
SDAOUT
AD0
AD1
AD2
AD3
AGND VEE SENSE1
–50V
1F
SMAJ58A
GATE1 OUT1
OUT2
OUT3
SENSE2 GATE2
SENSE3 GATE3
SENSE4 GATE4 OUT4
PORT1
–50V
0.22F 100V
4
S1B
4
S1B
4
PORT2
PORT3
PORT4
DGND
VDD
INT
SHDN1 SHDN2
AUTO
MSD RESET
SHDN3 SHDN4
MID
0.1F
3.3V
LTC4266
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LTC4267 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Quad IEEE 802.3at Power over Ethernet Controller |
| LTC4267-1 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator |
| LTC4267-3 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator |
| LTC4267CDHC | 制造商:Linear Technology 功能描述:Hot Swap Controller 1-CH -57V 16-Pin DFN EP |
| LTC4267CDHC#PBF | 功能描述:IC POE 802.3AF INTERFACE 16-DFN RoHS:是 類別:集成電路 (IC) >> 接口 - 控制器 系列:- 標準包裝:2,450 系列:- 控制器類型:SPI 總線至 I²C 總線橋接 接口:I²C，串行，SPI 電源電壓:2.4 V ~ 3.6 V 電流 - 電源:11mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應商設備封裝:24-HVQFN（4x4） 包裝:托盤 配用:568-3511-ND - DEMO BOARD SPI TO I2C 其它名稱:935286452157SC18IS600IBSSC18IS600IBS-ND |
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