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參數(shù)資料
| 型號： | LTC4266IUHF#TRPBF |
| 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(shù)： | 27/30頁 |
| 文件大?。?/td> | 414K |
| 代理商： | LTC4266IUHF#TRPBF |
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LTC4266
4266fa
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
I2CTiming
ClockFrequency
(Note7)
l
1
MHz
t1
BusFreeTime
Figure5(Notes7,9)
l
480
ns
t2
StartHoldTime
Figure5(Notes7,9)
l
240
ns
t3
SCLLowTime
Figure5(Notes7,9)
l
480
ns
t4
SCLHighTime
Figure5(Notes7,9)
l
240
ns
t5
DataHoldTime
Figure5(Notes7,9)Dataintochip
Dataoutofchip
l
60
120
ns
t6
DataSet-UpTime
Figure5(Notes7,9)
l
80
ns
t7
StartSet-UpTime
Figure5(Notes7,9)
l
240
ns
t8
StopSet-UpTime
Figure5(Notes7,9)
l
240
ns
tr
SCL,SDAINRiseTime
Figure5(Notes7,9)
l
120
ns
tf
SCL,SDAINFallTime
Figure5(Notes7,9)
l
60
ns
FaultPresenttoINTPinLow
(Notes7,9,10)
l
150
ns
StopConditiontoINTPinLow
(Notes7,9,10)
l
1.5
s
ARAtoINTPinHighTime
(Notes7,9)
l
1.5
s
SCLFalltoACKLow
(Notes7,9)
l
120
ns
Note1:StressesbeyondthoselistedunderAbsoluteMaximumRatings
maycausepermanentdamagetothedevice.ExposuretoanyAbsolute
MaximumRatingconditionforextendedperiodsmayaffectdevice
reliabilityandlifetime.
Note2:ThisICincludesovertemperatureprotectionthatisintended
toprotectthedeviceduringmomentaryoverloadconditions.Junction
temperaturewillexceed140°Cwhenovertemperatureprotectionisactive.
Continuousoperationabovethespecifiedmaximumoperatingjunction
temperaturemayimpairdevicereliability.
Note3:Allcurrentsintodevicepinsarepositive;allcurrentsoutofdevice
pinsarenegative.
Note4:TheLTC4266operateswithanegativesupplyvoltage(withrespect
toground).Toavoidconfusion,voltagesinthisdatasheetarereferredto
intermsofabsolutemagnitude.
Note5:tDISisthesameastMPDOdefinedbyIEEE802.3at.
Note6:TheLTC4266digitalinterfaceoperateswithrespecttoDGND.All
logiclevelsaremeasuredwithrespecttoDGND.
Note7:Guaranteedbydesign,notsubjecttotest.
Note8:TheIEEE802.3afspecificationallowsaPDtopresentits
MaintainPowerSignature(MPS)onanintermittentbasiswithoutbeing
disconnected.Inordertostaypowered,thePDmustpresenttheMPSfor
tMPSwithinanytMPDOtimewindow.
Note9:ValuesmeasuredatVILD(MAX)andVIHD(MIN).
Note10:IffaultconditionoccursduringanI2Ctransaction,theINTpin
willnotbepulleddownuntilastopconditionispresentontheI2Cbus.
Note11:LoadCharacteristicoftheLTC4266duringMark:
7V<(AGND–VOUTn)<10VorIOUT<50A
Note12:SeetheLTC4266SoftwareProgrammingdocumentationfor
informationonserialbususageanddeviceconfigurationandstatus
registers.
electricAl chArActeristics
Theldenotesthespecificationswhichapplyoverthefulloperating
temperaturerange,otherwisespecificationsareatTA=25°C.AGND–VEE=54V,AGND=DGND,andVDD–DGND=3.3Vunlessotherwise
noted.(Notes3,4)
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| 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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