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参数资料
| 型号： | LTC4266IUHF#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | POWER SUPPLY MANAGEMENT CKT, PQCC38 |
| 封装： | 5 X 7 MM, LEAD FREE, PLASTIC, MO-220WHKD, QFN-38 |
| 文件页数： | 27/30页 |
| 文件大小： | 414K |
| 代理商： | LTC4266IUHF#PBF |
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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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相关代理商/技术参数 |
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| LTC4267 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Quad IEEE 802.3at Power over Ethernet Controller |
| LTC4267-1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator |
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| 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 类别:集成电路 (IC) >> 接口 - 控制器 系列:- 标准包装:2,450 系列:- 控制器类型:SPI 总线至 I²C 总线桥接 接口:I²C，串行，SPI 电源电压:2.4 V ~ 3.6 V 电流 - 电源:11mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-HVQFN（4x4） 包装:托盘 配用:568-3511-ND - DEMO BOARD SPI TO I2C 其它名称:935286452157SC18IS600IBSSC18IS600IBS-ND |
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