參數(shù)資料
型號(hào)： LTC4099EPDC#TRPBF
廠商： LINEAR TECHNOLOGY CORP
元件分類(lèi)： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQCC20
封裝： 3 X 4 MM, 0.55 MM HEIGHT, LEAD FREE, PLASTIC, UTQFN-20
文件頁(yè)數(shù)： 14/36頁(yè)
文件大?。?/td> 536K
代理商： LTC4099EPDC#TRPBF
LTC4099
4099fd
throughILIM0intheI2Cportdeterminewhetherthesus-
pendLDOwilllimitinputcurrenttothelowpowersetting
of500Aorthehighpowersettingof2.5mA.
Interrupt Generation
TheIRQpinontheLTC4099isanopen-drainoutputthat
canbeusedtogenerateaninterruptbasedononeormore
of a multitude of maskable PowerPath/battery charger
change events. The interrupt mask register column in
Table1indicatesthecategoriesofeventsthatcangener-
ateaninterrupt.Ifa1iswrittentoagivenlocationinthe
maskregister,thenanychangeinthestatusdataofthat
categorywillcauseaninterrupttooccur.Forexample,if
a1iswrittentobit6ofthemaskregister,thenaninter-
ruptwillbegeneratedwhentheWALLUVLOdetectsthat
eitherpowerhasbecomeavailableatWALL,orthatpower
wasavailableandisnolongeravailablefromWALL.Ifa
1iswrittentobit2ofthemaskregister,thenaninterrupt
willbetriggeredbyanychangeinthestatusbitsofthe
batterycharger,asgivenbyTable8.Likewise,a1atbit3
willallowaninterruptduetoanychangeinthethermistor
statusbitsofTable7.
TheIRQpinisclearedwhenthebusmasteracknowledges
receiptofstatusdatafromareadoperation.Ifthemaster
doesnotacknowledgethestatusbyte,theinterruptwill
notbeclearedandtheIRQpinwillnotbereleased.
Upongenerationofaninterrupt,thecurrentstateofthe
LTC4099 is recorded in the I2C port for retrieval (see
OutputData).
I2C Interface
TheLTC4099maycommunicatewithabusmasterusing
thestandardI2C2-wireinterface.TheTimingDiagram
showstherelationshipofthesignalsonthebus.Thetwo
buslines,SDAandSCL,mustbeHIGHwhenthebusis
notinuse.Externalpull-upresistorsorcurrentsources,
such as the LTC1694 SMBus accelerator, are required
ontheselines.TheLTC4099isbothaslavereceiverand
slavetransmitter.TheI2Ccontrolsignals,SDAandSCL,
arescaledinternallytotheDVCCsupply.DVCCshouldbe
connectedtothesamepowersupplyasthebuspull-up
resistors.
TheI2CporthasanundervoltagelockoutontheDVCCpin.
WhenDVCCisbelowapproximately1V,theI2Cserialport
iscleared,theLTC4099issettoitsdefaultconfiguration
ofallzerosandinterruptswillbelockedout.
Bus Speed
TheI2Cportisdesignedtobeoperatedatspeedsofup
to400kHz.Ithasbuilt-intimingdelaystoensurecorrect
operationwhenaddressedfromanI2Ccompliantmaster
device.Italsocontainsinputfiltersdesignedtosuppress
glitchesshouldthebusbecomecorrupted.
START and STOP Conditions
Abusmastersignalsthebeginningofcommunications
bytransmittingaSTARTcondition.ASTARTconditionis
generatedbytransitioningSDAfromHIGHtoLOWwhile
SCLisHIGH.Themastermaytransmiteithertheslave
writeortheslavereadaddress.Oncedataiswrittentothe
LTC4099,themastermaytransmitaSTOPconditionwhich
commandstheLTC4099toactuponitsnewcommandset.
ASTOPconditionissentbythemasterbytransitioning
SDAfromLOWtoHIGHwhileSCLisHIGH.
Byte Format
Eachbytesentto,orreceivedfrom,theLTC4099must
beeightbitslongfollowedbyanextraclockcycleforthe
acknowledgebit.ThedatashouldbesenttotheLTC4099
mostsignificantbit(MSB)first.
Acknowledge
Theacknowledgesignalisusedforhandshakingbetween
themasterandtheslave.WhentheLTC4099iswritten
to(writeaddress),itacknowledgesitswriteaddressas
wellasthesubsequenttwodatabytes.Whenitisread
from(readaddress),theLTC4099acknowledgesitsread
addressonly.Thebusmastershouldacknowledgereceipt
ofinformationfromtheLTC4099.
Anacknowledge(activeLOW)generatedbytheLTC4099
letsthemasterknowthatthelatestbyteofinformationwas
received.Theacknowledgerelatedclockpulseisgenerated
bythemaster.ThemasterreleasestheSDAline(HIGH)
duringtheacknowledgeclockcycle.TheLTC4099pulls
operaTion
相關(guān)PDF資料
PDF描述
LTC4099EUDC#TRPBF 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQCC20
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LTC4217IFE 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO20
LTC4217CFE#TRPBF 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO20
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC4099EUDC#PBF 功能描述:IC USB PWR MANAGER/CHRGR 20-QFN RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 電池管理 系列:PowerPath™ 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 功能:電池監(jiān)控器 電池化學(xué):堿性，鋰離子，鎳鎘，鎳金屬氫化物 電源電壓:1 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商設(shè)備封裝:SOT-6 包裝:帶卷 (TR)
LTC4099EUDC#PBF 制造商:Linear Technology 功能描述:IC BATTERY CHARGER 1.2A UTQFN-20
LTC4099EUDC#TRPBF 功能描述:IC USB PWR MANAGER/CHRGR 20-QFN RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 電池管理 系列:PowerPath™ 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤(pán) 包裝:管件
LTC4100 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual Smart Battery System Manager Available in 48-Lead TSSOP Package
LTC4100_09 制造商:LINER 制造商全稱:Linear Technology 功能描述:Smart Battery Charger Controller
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