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參數(shù)資料
| 型號： | LTC4099EPDC#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 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 |
| 文件頁數(shù)： | 17/36頁 |
| 文件大?。?/td> | 536K |
| 代理商： | LTC4099EPDC#TRPBF |
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LTC4099
4099fd
Table5liststhepossiblesafetytimersettingsfrom1to8
hours,andhowtodecodethem.Thedefaultstateforthe
LTC4099safetytimeris4hours.
Table 5. Safety Timer Decode
SAFETY TIMER SETTINGS
TIMER2
TIMER1
TIMER0
TIMEOUT
0
4Hours*
0
1
5Hours
0
1
0
6Hours
0
1
7Hours
1
0
8Hours
1
0
1
1Hour
1
0
2Hours
1
3Hours
*DefaultSetting
TheDISABLE_CHARGERbitcanbeusedtopreventbattery
chargingifneeded.Thisbitshouldbeusedwithcaution
asitcanpreventthebatterychargerfrombringingup
thebatteryvoltage.WithouttheabilitytoaddresstheI2C
port,onlyalowvoltageonDVCCwillcleartheI2Cportto
itsdefaultstateandre-enablecharging.
The ENABLE_BATTERY_CONDITIONER bit enables the
automaticbatteryloadcircuitintheeventofsimultaneously
highbatteryvoltageandtemperature.SeetheOvertem-
peratureBatteryConditionersection.
TheVFLOAT=4.2Vbitcontrolsthefinalfloatvoltageofthe
LTC4099’sbatterycharger.A1inthisbitpositionchanges
thechargerfromthedefaultfloatvoltagevalueof4.100V
tothehigher4.200Vlevel.
TheTREG=85°CcontrolbitchangestheLTC4099’sbattery
chargerjunctionthermalregulationtemperaturefromits
defaultvalueof105°Ctoalowersettingof85°C.Thismay
beusedtoreduceheatinhighlythermallycompromised
systems.Ingeneral,thehighefficiencychargingsystem
oftheLTC4099willkeepthejunctiontemperaturelow
enoughtoavoidjunctionthermalregulation.
Thethirdandfinalbyteofinputdataatsubaddress0x02
isthemaskregister.Themaskregisterdetermineswhich
statuschangeeventsorcategorieswillbeallowedtogener-
ateaninterrupt.A1writtentoagivenpositioninthemask
registerallowsstatuschangeinthatcategorytogenerate
aninterrupt.Azeroinagivenpositioninthemaskregister
prohibitsthegenerationofaninterrupt.Thestart-upstate
oftheLTC4099isallzerosforthisregisterindicatingthat
nointerruptswillbegeneratedwithoutexplicitrequestvia
theI2Cport.SeetheInterruptGenerationsection.
Output Data
OnestatusbytemaybereadfromtheLTC4099.Table6
representsthestatusbyteinformation.A1readbackin
anyofthebitpositionsindicatesthattheconditionistrue.
Forexample,1sreadbackfrombits7and2indicatethat
powerisavailableatVBUS,andthatthebatterycharger’s
thermistorhashaltedchargingduetoanundertemperature
conditionatthebattery.
Table 6. LTC4099 Status Data Bytes
READ BYTE
STATUS REGISTER
Bit7(MSB)
USBGOOD
Bit6
WALLGOOD
Bit5
BADCELL
Bit4
THERMALREG
Bit3
NTC1
SeeTable7
Bit2
NTC0
Bit1
CHRGR1
SeeTable8
Bit0(LSB)
CHRGR0
Bit7inthestatusbyteindicatesthepresenceofpower
atVBUS.Criteriafordeterminingthisstatusbitisderived
fromtheundervoltagelockoutcircuitonVBUSandisgiven
bytheelectricalparametersVUVLOandVDUVLO.
Bit6indicatesthepresenceofvoltageavailableattheWALL
pinandisderivedfromtheWALLundervoltagelockout
circuit.LiketheVBUSpin,thispinhasbothanabsolute
voltagedetectionlevelgivenbytheelectricalparameter
VWALL,aswellasalevelrelativetoBATgivenbyΔVWALL.
Bothoftheconditionsmustbemetforbit6toindicate
thepresenceofpoweratWALL.
Bit5indicatesthatthebatteryhasbeenbelowthepre-
chargethresholdlevelofapproximately2.85Vformore
thanone-halfhourwhilethechargerwasattemptingto
charge.Whenthisoccurs,itisusuallytheresultofade-
fectivecell.However,insomecasesabadcellindication
maybecausedbysystemloadprioritizationoverbattery
charging.Systemsoftwarecantestforthisbyforcinga
reductionofsystemloadandrestartingthebatterycharger
operaTion
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| LTC4099EUDC#PBF | 功能描述:IC USB PWR MANAGER/CHRGR 20-QFN RoHS:是 類別: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 標準包裝: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 類別:集成電路 (IC) >> PMIC - 電池管理 系列:PowerPath™ 標準包裝: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 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤 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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