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參數資料
型號: LTC4266IGW#TRPBF
廠商: LINEAR TECHNOLOGY CORP
元件分類: 電源管理
英文描述: POWER SUPPLY MANAGEMENT CKT, PDSO36
封裝: 0.300 INCH, LEAD FREE, PLASTIC, SSOP-36
文件頁數: 1/30頁
文件大小: 414K
代理商: LTC4266IGW#TRPBF
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.
n
FourIndependentPSEChannels
n
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
LTC4266IUHF#PBF 制造商:Linear Technology 功能描述:POE Controller 25.5W 38-Pin QFN EP 制造商:Linear Technology 功能描述:IC POE 802.3AT QUAD PSE 38-QFN 制造商:Linear Technology 功能描述:POE CNTRL QUAD 25.5W 1MHZ 制造商:Linear Technology 功能描述:IC, POE CONTROLLER, 3.3V, QFN-38; Input Voltage:3.3V; Supply Current:-2.4mA; UVLO:25V; Digital IC Case Style:QFN; No. of Pins:38; Frequency:1MHz; Operating Temperature Min:-40C; Operating Temperature Max:85C; MSL:MSL 1 - Unlimited ;RoHS Compliant: Yes
LTC4266IUHF#TRPBF 制造商:Linear Technology 功能描述:POE Controller 25.5W 38-Pin QFN EP
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
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