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參數(shù)資料
| 型號(hào)： | LTC4266CGW#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類(lèi)： | 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(yè)數(shù)： | 1/30頁(yè) |
| 文件大?。?/td> | 414K |
| 代理商： | LTC4266CGW#TRPBF |
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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.
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(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4266CIUHF#PBF | 功能描述:IC CONTROLLER PSE QUAD 38-QFN RoHS:是 類(lèi)別:集成電路 (IC) >> 接口 - 控制器 系列:- 標(biāo)準(zhǔn)包裝:2,450 系列:- 控制器類(lèi)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(lèi)型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:24-HVQFN（4x4） 包裝:托盤(pán) 配用:568-3511-ND - DEMO BOARD SPI TO I2C 其它名稱(chēng):935286452157SC18IS600IBSSC18IS600IBS-ND |
| LTC4266CIUHF#TRPBF | 功能描述:IC CONTROLLER PSE QUAD 38-QFN RoHS:是 類(lèi)別:集成電路 (IC) >> 接口 - 控制器 系列:- 標(biāo)準(zhǔn)包裝:2,450 系列:- 控制器類(lèi)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(lèi)型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:24-HVQFN（4x4） 包裝:托盤(pán) 配用:568-3511-ND - DEMO BOARD SPI TO I2C 其它名稱(chēng):935286452157SC18IS600IBSSC18IS600IBS-ND |
| LTC4266CUHF#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 CONTROLLER 3.3V QFN-38 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:0C; Operating Temperature Max:70C; MSL:MSL 1 - Unlimited ;RoHS Compliant: Yes |
| LTC4266CUHF#TRPBF | 制造商:Linear Technology 功能描述:POE Controller 25.5W 38-Pin QFN EP |
| LTC4266IGW#PBF | 功能描述:IC CTRLR IEEE 802.3AT 36-SSOP RoHS:是 類(lèi)別:集成電路 (IC) >> 接口 - 控制器 系列:- 標(biāo)準(zhǔn)包裝:2,450 系列:- 控制器類(lèi)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(lèi)型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:24-HVQFN（4x4） 包裝:托盤(pán) 配用:568-3511-ND - DEMO BOARD SPI TO I2C 其它名稱(chēng):935286452157SC18IS600IBSSC18IS600IBS-ND |
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