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參數(shù)資料
| 型號： | LTC4011CFE#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | High Efficiency Standalone Nickel Battery Charger; Package: TSSOP; No of Pins: 16; Temperature Range: 0°C to +70°C |
| 中文描述： | BATTERY CHARGE CONTROLLER, 640 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | 4.40 MM, LEAD FREE, PLASTIC, TSSOP-20 |
| 文件頁數(shù)： | 26/26頁 |
| 文件大?。?/td> | 653K |
| 代理商： | LTC4011CFE#TRPBF |
LTC4011
4011fb
pin FuncTions
VCDIV(Pin9):AverageCellVoltageResistorDividerTermi-
nation.TheLTC4011connectsthispintoGNDprovidedthe
chargerisnotinshutdown.VCDIVisanopen-drainoutput
toGNDwithanoperatingvoltagerangeofGNDtoBAT.
TIMER(Pin10):ChargeTimerInput.Aresistorconnected
betweenTIMERandGNDprogramschargecycletiming
limits.RefertotheApplicationsInformationsectionfor
completedetails.OperatingvoltagerangeisGNDto1V.
SENSE(Pin11):ChargeCurrentSenseInput.Anexternal
resistorbetweenthisinputandBATisusedtoprogram
charge current. Refer to the Applications Information
section for complete details on programming charge
current.Operatingvoltagerangesfrom(BAT–50mV)to
(BAT+200mV).
BAT(Pin12):BatteryPackConnection.TheLTC4011uses
thevoltageonthispintocontrolcurrentsourcedfrom
VCCtothebatteryduringcharging.Allowableoperating
voltagerangeisGNDtoVCC.
TOC(Pin13):Active-LowTop-OffChargeIndicatorOut-
put.TheLTC4011indicatesthetop-offchargestatefor
NiMHbatteriesbyconnectingthispintoGND.Referto
theOperationandApplicationsInformationsectionsfor
furtherdetails.ThisoutputiscapableofdrivinganLED
andshouldbeleftfloatingifnotused.TOCisanopen-
drainoutputtoGNDwithanoperatingvoltagerangeof
GNDtoVCC.
INTVDD(Pin14):Internal5VRegulatorOutput.Thispin
providesameansofbypassingtheinternal5Vregulator
usedtopowertheBGATEoutputdriver.Typically,power
should not be drawn from this pin by the application
circuit.RefertotheApplicationInformationsectionfor
additionaldetails.
BGATE(Pin15):ExternalSynchronousN-channelMOSFET
GateControlOutput.Thisoutputprovidesgatedriveto
anoptionalexternalNMOSpowertransistorswitchused
forsynchronousrectificationtoincreaseefficiencyinthe
step-downDC/DCconverter.OperatingvoltageisGNDto
INTVDD.BGATEshouldbeleftfloatingifnotused.
PGND(Pin16):PowerGround.Thispinprovidesareturn
forswitchingcurrentsgeneratedbyinternalLTC4011cir-
cuits.Externally,PGNDandGNDshouldbewiredtogether
usingaverylowimpedanceconnection.RefertoPCB
Layout Considerations in the Applications Information
sectionforadditionalgroundingdetails.
TGATE(Pin17):ExternalP-channelMOSFETGateControl
Output.ThisoutputprovidesgatedrivetoanexternalPMOS
powertransistorswitchusedintheDC/DCconverter.Op-
eratingvoltagerangevariesasafunctionofVCC.Referto
theElectricalCharacteristicstableforspecificvoltages.
VCC(Pin18):PowerInput.ExternalPowerPathcontrol
circuitsnormallyconnecteithertheDCinputpowersup-
plyorthebatterytothispin.RefertotheApplications
Informationsectionforfurtherdetails.Suggestedapplied
voltagerangeisGNDto34V.
READY (Pin 19): Active-Low Ready-to-Charge Output.
TheLTC4011connectsthispintoGNDifproperoperating
voltagesforchargingarepresent.RefertotheOperation
sectionforcompletedetailsonchargequalification.This
outputiscapableofdrivinganLEDandshouldbeleft
floatingifnotused.READYisanopen-drainoutputto
GNDwithanoperatingvoltagerangeofGNDtoVCC.
INFET(Pin20):PowerPathControlOutput.Forverylow
dropoutapplications,thisoutputmaybeusedtodrive
the gate of an input PMOS pass transistor connected
betweentheDCinput(DCIN)andtherawsystemsupply
rail(VCC).INFETisinternallyclampedabout6VbelowVCC.
MaximumoperatingvoltageisVCC.INFETshouldbeleft
floatingifnotused.
Exposed Pad (Pin 21): This pin provides enhanced
thermalpropertiesfortheTSSOP.Itmustbesoldered
tothePCBcoppergroundtoobtainoptimumthermal
performance.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4011EFE | 制造商:LINER 制造商全稱:Linear Technology 功能描述:High Efficiency Standalone Nickel Battery Charger |
| LTC4012 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:High Effi ciency, Multi-Chemistry Battery Charger with PowerPath Control |
| LTC4012-1 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:High Effi ciency, Multi-Chemistry Battery Charger with PowerPath Control |
| LTC4012-2 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:High Effi ciency, Multi-Chemistry Battery Charger with PowerPath Control |
| LTC4012-3 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:High Efficiency, Multi-Chemistry Battery Charger with PowerPath Control |
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