ADP3500 Fast Delivery |IC PHOENIX CO.,LIMITED

ADP3500 ,CDMA Power Management System (Pre-Release)SPECIFICATIONS MAIN FUNCTIONST =-30 to +85°C, C =1µ F MLCC, VBAT=3.6V unless otherwise noted. See T ..
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ADP3500
CDMA Power Management System (Pre-Release)
CDMA Power Management SystemFEATURES
HandlesallCDMABasebandandRF/IFPowerManagement
Functions
LDOsOptimizedforSpecificCDMASubsystems
FourBackupLDOsforStand-Bymodeoperation
FourLi-IonBatteryChargeModes
5mAPreCharge
LowCurrentCharge
FullCurrentCharge
Regulatormode(nocurrentlimit)
AmbientTemperature:-30°°°°Cto+85°°°°C
64pin7x7LQFPpackage
APPLICATIONS
CDMA/CDMA2000/PCSHandsets
GENERALDESCRIPTION
TheADP3500isamultifunctionpowersystemchipoptimized
forCDMAcellphonepowermanagement.Itcontains15LDOs.
Sophisticatedcontrolsareavailableforpowerupduringbattery
charging,keypadinterface,GPIO/INTfunctionandRTC
function.ThebatterychargerhasfourmodesasPre-charge,Low
CurrentCharge,FullCurrentCharge,andRegulatormodes,anddesignedforLi-Ion/Li-Polymerbatteries.
REV. PrP 2/6/02
InformationfurnishedbyAnalogDevicesisbelievedtobeaccurateand
reliable.However,noresponsibilityisassumedbyAnalogDevicesforits
Figure1.FunctionalBlockDiagram
ADP3500 - SPECIFICATIONS
MAINFUNCTIONS=-30to+85°C,CVBAT=1μFMLCC,VBAT=3.6Vunlessotherwisenoted.SeeTable2forCOUT.
LDOSPECIFICATIONS=25°C,CVBAT=1μFMLCC,VBAT=Vout+1V,NRCAP=0.1μF.SeeTable2forCOUT.
BasebandVDDMain-LDO(LDO#1a)
BasebandVDDSub-LDO(LDO#1b)
ADP3500 BasebandAVDDMain-LDO(LDO#2a)
BasebandAVDDSub-LDO(LDO#2b)
REFOswitch
CoinCellMain-LDO(LDO#3a)
CoinCellSub-LDO(LDO#3b)
AudioLDO(LDO#4)
ADP3500
VibratorLDO(LDO#5)
BasebandCoreMain-LDO(LDO#6a)
BasebandCoreSub-LDO(LDO#6b)Rx1LDO(LDO#7)TxLDO(LDO#8)Rx2LDO(LDO#9)OptionalLDO(LDO#10)
ADP3500
OptionalLDO(LDO#11)
VoltageDetectorforLDO1andLDO6
BATTERYVOLTAGEDIVIDER:MVBAT=-30to85°C,CVBAT=10μFMLCC,CAdapter=1μFMLCCunlessotherwisenoted
BATTERYCHARGER=-30to85°C,CVBAT=10μFMLCC,CAdapter=1μFMLCC,4.0V≤ADAPTER≤12Vunlessotherwisenoted
ADP3500
Note1:Overheadincludesexternalcomponents,includingsenseresistor,PNPandisolationdiode.DDLOhysteresisisdependentuponDDLOthresholdvalue.IfDDLOthresholdisatmaximum,DDLOhysteresisisat
maximumatthesametime.Guaranteedbutnottested.
ADP3500
LOGICSSpecifications=25°C,CVBAT=1μFMLCC,VBAT=3.6V
VADP:AdaptervoltageSpecifications
Allspecsincludetemperatureunlessotherwisenoted
ADP3500
SERIALINTERFACE
Note:Theseparametersarenottested.
ABSOLUTEMAXIMUMRATINGS
VoltageonADAPTERpintoGND…………………………….....-0.3,15Vmax
VoltageonVBATpintoGND……………………………………-0.3,7Vmax
VoltageonPin6-13,21-28toGND………………………………-0.3,VLDO1+0.3Vmax
VoltageonPin1,62-64…………………………………………..-0.3,VBAT+0.3Vmax
VoltageonPin20,32……………………………………………..-0.3,VRTCV+0.3Vmax
VoltageonPin60,61……………………………………………...-0.3,VADAPTER+0.3Vmax
VoltageonPin2-5,14,30,31,33………………………………….-0.3,7Vmax
StorageTemperatureRange……………………………………….-65to+150°C
OperatingTemperatureRange…………………………………….-30to+85°C
MaximumJunctionTemperature………………………………….125°C
θJAThermalImpedance(LQFP-64)……………………………….2layerboard76°C/W
θJAThermalImpedance(LQFP-64)……………………………….4layerboard54°C/W
LeadTemperatureRange(Soldering,60sec)……………………...300°C
ORDERINGGUIDE
32K
ADP3500
ADP3500
BLOCKDIAGRAM
Figure3.OverallBlockDiagram
ADP3500
Theory of Operations illustratedinFigure1atthebeginning,ADP3500canbedividedintotwohighlevelblocks–AnalogandLogic.TheAnalog
blockmainlyconsistsofLDOregulators,batterycharger,referencevoltage,andvoltagedetectorsub-blocks,allofwhichare
poweredbythemainpowersource(VBAT),namelythemainbatteryorthechargingadapter.Ontheotherhand,theLogicblockis
morecomplicated.AlltheLogicsub-blocksarealsopoweredbyVBATexcepttheRTCcounter,32MHzOutputcontrol,RESET
Output,andStay-AliveTimer.Thesesub-blocksarepoweredfromRTCVpin,asindicatedinFigure4inshadedarea.
Figure4.Powerpartitioningofsub-blocksANALOGBLOCKS
1.1LOWDROP-OUT(LDO)REGULATORS
TherearetotalfourSub-LDOsforeachLDO1,2,3,and6,inordertomeetlowerpowerconsumptionatlightload(stand-by
operation).Theyareusedatlowloadcondition,buttheyarecontinuouslyONeveniftheeachMain-LDOsareON.TheLDO3andareusedforCoincellandLDO3bisalwaysONuntilMainbattery(VBAT)isdownedto2.5VduetoDDLOfunction.LDO7andarecontrolledwithSLEEP-signal.FordetailofLDOON/OFFcontrol,pleaserefertoSection“2.8LDOControl”.
Table1.GroundcurrentsofLDOswitheachhandsetoperations.
ADP3500
Table2.LDOoperationoverview
1.2BATTERYCHARGER
1.2.1.BlockDiagram
Figure5.Batterychargerblockdiagram
ADP3500
1.2.2.FlowChart
Figure6.ChargerflowchartA
ADP3500
Figure7.ChargerflowchartB
1.2.3.ChargerDetectfunction
TheADP3500willdetectthatachargingadapterhasbeenappliedwhenthevoltageattheADAPTERpinexceedsthevoltageat
BATSNS.TheADAPTERpinvoltagemustexceedtheBVSvoltagebyasmallpositiveoffset.Thisoffsethashysteresistoprevent
jitteratthedetectionthreshold.ThechargerdetectioncomparatorwillsettheCharger_Detectflaginthe20hregisterandgeneratean
interrupttothesystem.IftheADAPTERinputvoltagedropsbelowthedetectionthreshold,chargingwillstopautomaticallyandthe
Charger_Detectflagwillbeclearedandgenerateaninterruptalso.
1.2.4.DDLOfunctionandoperation
TheADP3500containsacomparatorthatwilllockoutsystemoperationifthebatteryvoltagedropstothepointofdeepdischarge.
Whenthebatteryvoltageexceeds2.675V,thereferencewillstartaswillthesub-LDO3b.Ifthebatteryvoltagedropsbelowthe
hysteresislevel,thereferenceandLDO'swillbeshutdown,ifforsomereasontheyarestillactive.SinceLDO1willbeindeep
dropoutandwellbelowthevoltagedetectorthresholdatthispoint,theresetgeneratorwillhavealreadyshutdowntherestofthe
systemviaRESET+,RESETOUT-,andRSTDELAY-.achargingadapterhasbeenappliedtothesystem,theDDLOcomparatorwillforcethechargingcurrenttotricklechargeifthe
batteryisbelowtheDDLOthreshold.Duringthistime,thechargingcurrentislimitedto5mA.Whenthebatteryvoltageexceeds
theupperthreshold,thelowcurrentchargingisenabled,whichallows55mV(typical)acrosstheexternalchargecurrentsense
resistor.SeealsoFigure6,theBatteryChargerFlowchart.
1.3MVBAT

Partno	Mfg	Dc	Qty	Available	Descript
ADP3500	AD	N/a	1000	avai	CDMA Power Management System (Pre-Release)