Product Sample & Technical Tools & Support & Folder Buy Documents Software Community bq24190,bq24192,bq24192I SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 2 bq2419x I C Controlled 4.5-A Single Cell USB/Adapter Charger with Narrow VDC Power Path Management and USB OTG 1 Features 1 • HighEfficiency4.5-A SwitchModeCharger – IntegratedCurrentSensing – 92%ChargeEfficiencyat2A,90%at4A – BootstrapDiode – AccelerateChargeTimebyBatteryPath – InternalLoopCompensation ImpedanceCompensation • Safety • CompatiblewithMaxLifeTechnologyforFaster – BatteryTemperatureSensingandCharging ChargingWhenUsedinConjunctionWith SafetyTimer bq27531 – ThermalRegulationandThermalShutdown • HighestBatteryDischargeEfficiencywith12-mΩ – InputSystemOver-VoltageProtection BatteryDischargeMOSFETupto9-ADischarge – MOSFETOver-CurrentProtection Current • ChargeStatusOutputsforLEDorHostProcessor • SingleInputUSB-compliant/AdapterCharger • LowBatteryLeakageCurrentandSupport – USBHostorChargingPortD+/D-Detection ShippingMode CompatibletoUSBBatteryChargerSpec1.2 • 4.00mmx4.00mmVQFN-24Package – InputVoltageandCurrentLimitSupports USB2.0andUSB3.0 2 Applications – InputCurrentLimit:100mA,150mA,500mA, • TabletPCandSmartPhone 900mA,1.2A,1.5A,2Aand3A • PortableAudioSpeaker • 3.9-Vto17-VInputOperatingVoltageRange • PortableMediaPlayers – SupportAllKindsofAdapterwithInputVoltage DPMRegulation • InternetDevices • USBOTG5Vat1.3-ASynchronousBoost 3 Description ConverterOperation The bq24190, bq24192, and bq24192I are highly- – 93%5-VBoostEfficiencyat1A integrated switch-mode battery charge management • NarrowVDC(NVDC)PowerPathManagement and system power path management devices for – Instant-onWorkswithNoBatteryorDeeply single cell Li-Ion and Li-polymer battery in a wide DischargedBattery rangeoftabletandotherportabledevices. – IdealDiodeOperationinBatterySupplement DeviceInformation(1) Mode PARTNUMBER PACKAGE BODYSIZE(NOM) • 1.5-MHzSwitchingFrequencyforLowProfile bq24190 Inductor bq24192 VQFN(24) 4.00mmx4.00mm • AutonomousBatteryChargingwithorwithout bq24192I HostManagement – BatteryChargeEnable (1) For all available packages, see the orderable addendum at theendofthedatasheet. – BatteryChargePreconditioning – ChargeTerminationandRecharge 5VUSBSDP/DCP bq24190 1μH SYS:3.5V-4.35V VBUS SW • HighAccuracy(0°Cto125°C) 1μF 6.8μF PMID 47nF 10μF 10μF 10μF 10μF USB D+ RBETGSNT – ±0.5%ChargeVoltageRegulation 4.7μF D– – ±7%ChargeCurrentRegulation SYS PGND – ±7.5%InputCurrentRegulation VREF 2.2kW STAT SYS BAT – ±2%OutputRegulationinBoostMode 10kW 10kW 10kW 353W 10μF SDA ILIM (1.5Amax) • HighIntegration SCL Host INT REGN – PowerPathManagement OTG 5.52kW CE TS1 TS2 – SynchronousSwitchingMOSFETs 31.23kW 10kW PowerPad (103-AT) 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

bq24190,bq24192,bq24192I SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 www.ti.com Table of Contents 1 Features.................................................................. 1 9.3 FeatureDescription.................................................13 2 Applications........................................................... 1 9.4 DeviceFunctionalModes........................................27 3 Description............................................................. 1 9.5 RegisterMap...........................................................28 4 RevisionHistory..................................................... 2 10 ApplicationandImplementation........................ 36 10.1 ApplicationInformation..........................................36 5 Description(Continued)........................................ 3 10.2 TypicalApplication................................................36 6 DeviceComparisonTable..................................... 3 11 PowerSupplyRecommendations..................... 41 7 PinConfigurationandFunctions......................... 4 12 Layout................................................................... 41 8 Specifications......................................................... 5 12.1 LayoutGuidelines.................................................41 8.1 AbsoluteMaximumRatings......................................5 12.2 LayoutExample....................................................42 8.2 ESDRatings ............................................................6 13 DeviceandDocumentationSupport................. 43 8.3 RecommendedOperatingConditions.......................6 13.1 DocumentationSupport .......................................43 8.4 ThermalInformation..................................................6 13.2 RelatedLinks........................................................43 8.5 ElectricalCharacteristics...........................................6 13.3 Trademarks...........................................................43 8.6 TypicalCharacteristics..............................................9 13.4 ElectrostaticDischargeCaution............................43 9 DetailedDescription............................................ 12 13.5 Glossary................................................................43 9.1 Overview.................................................................12 14 Mechanical,Packaging,andOrderable 9.2 FunctionalBlockDiagram.......................................12 Information........................................................... 44 4 Revision History ChangesfromRevisionA(October2012)toRevisionB Page • Alignedpackagedescriptionthroughoutdatasheet................................................................................................................ 1 • AddedESDRatings,FeatureDescription,DeviceFunctionalModes,ApplicationandImplementation,PowerSupply Recommendations,Layout,DeviceandDocumentationSupport,Mechanical,Packaging,OrderableInformation. ...........1 • AddedFeature:CompatiblewithMaxLifeTechnologyforFasterChargingWhenUsedinConjunctionWithbq27531.......1 • ChangedV ,V ,V ,I ,V ,I ,K ,V inElectricalCharacteristics..........6 SLEEPZ BAT_DPL_HY BATGD CHG_20pct SHORT ADPT_DPM ILIM BTST_REFRESH • Added–40°Cto85°toI TestCondition............................................................................................................................. 6 BAT • AddedREG00[6:3]=0110(4.36V)or1011(4.76V)toV TestConditions...................................................... 8 INDPM_REG_ACC • AddedTypicalinputcurrentof1.5AbasedonKLIMtoI TestConditions............................................................... 8 ADPT_DPM • AddedaMINvalueof435toK .......................................................................................................................................... 8 ILIM • DeletedT MINandMAX......................................................................................................................................... 8 Junction_REG • AddedrisingtoV parameter ............................................................................................................................................. 8 HTF • DeletedV ,V =5V,I =20mAMAXvalue......................................................................................................... 9 REGN VBUS REGN • ChangedFunctionalBlockDiagram..................................................................................................................................... 12 • ChangedChargingCurrentinTable4................................................................................................................................. 18 • ChangedREG09[5:4]toREG08[5:4]inChargingTerminationsection............................................................................... 21 • AddedorwhenFORCE_20PCT(REG02[0])bitisset,toChargingSafetyTimerdescription............................................ 22 • AddedlastparagraphtoChargingSafetyTimerdescription................................................................................................ 22 • AddedtwicetoHostModeandDefaultModedescription................................................................................................... 27 • ChangedREG05[5:4]=11toREG05[5:4]=00inHostModeandDefaultModedescription................................................. 27 • ChangedChargeCurrentControlRegisterREG02Bit0description.................................................................................. 31 • ChangedChargeCurrentControlRegisterREG02Bit0note............................................................................................. 31 • ChangedREG05Bit0fromJEITAISET(0°C-10°C)toReserved...................................................................................... 32 • ChangedREG07Bit4fromJEITA_VSET(45°Cto60°C)toReserved.............................................................................. 33 • ChangedBOOTtoBTSTinFigure38................................................................................................................................. 37 • ChangedBOOTtoBTSTinFigure39................................................................................................................................. 37 • Changedbq24193tobq24192inFigure42......................................................................................................................... 39 2 SubmitDocumentationFeedback Copyright©2012–2014,TexasInstrumentsIncorporated ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I www.ti.com SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 5 Description (Continued) Its low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. The I2C serial interface with charging and system settings makes thedeviceatrulyflexiblesolution. The device supports a wide range of input sources, including standard USB host port, USB charging port and high power DC adapter. To set the default input current limit, the bq24190 detects the input source following the USB battery charging spec 1.2, and the bq24192 and bq24192I take the results from detection circuit in the system, such as USB PHY device. The bq24190,192, and 192I are compliant with USB 2.0 and USB 3.0 power specifications with input current and voltage regulation. Meanwhile, the bq24190, bq24192, and bq24192I meet USB On-the-Go operation power rating specification by supplying 5 V on the VBUS with a current limit up to 1.3 A. The power path management regulates the system slightly above battery voltage but does not drop below 3.5-V minimum system voltage (programmable). With this feature, the system maintains operation even when the battery is completely depleted or removed. When the input current limit or voltage limit is reached, the power path management automatically reduces the charge current to zero. As the system load continues to increase, the power path discharges the battery until the system power requirement is met. This supplement mode operationpreventsoverloadingtheinputsource. The devices initiate and complete a charging cycle without software control. It automatically detects the battery voltage and charges the battery in three phases: pre-conditioning, constant current and constant voltage. At the end of the charging cycle, the charger automatically terminates when the charge current is below a preset limit in the constant voltage phase. When the full battery falls below the recharge threshold, the charger will automaticallystartanotherchargingcycle. The bq24190, bq24192, and bq24192I provide various safety features for battery charging and system operation, including dual pack negative thermistor monitoring, charging safety timer and over-voltage/over-current protections. The thermal regulation reduces charge current when the junction temperature exceeds 120°C (programmable). The STAT output reports the charging status and any fault conditions. The PG output in the bq24192 and bq24192Iindicatesifagoodpowersourceispresent.TheINTimmediatelynotifiesthehostwhenafaultoccurs. Thebq24190,bq24192,andbq24192Iareavailableina24-pin,4.00x4.00mm2thinVQFNpackage. 6 Device Comparison Table bq24190 bq24192 bq24192I I2CAddress 6BH 6BH 6BH USBDetection D+/D– PSEL PSEL DefaultVINDPM 4.36V 4.36V 4.44V DefaultBatteryVoltage 4.208V 4.208V 4.112V DefaultChargeCurrent 2.048A 2.048A 1.024A DefaultAdapterCurrentLimit 1.5A 3A 1.5A MaximumPre-ChargeCurrent 2.048A 2.048A 640mA Cold/Hot Cold/Hot Cold/Hot ChargingTemperatureProfile 2TSpins 2TSpins 2TSpins StatusOutput STAT STAT,PG STAT,PG STATDuringFault Blinkingat1Hz Blinkingat1Hz 10ktoground Copyright©2012–2014,TexasInstrumentsIncorporated SubmitDocumentationFeedback 3 ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 www.ti.com 7 Pin Configuration and Functions RGEPackage 24-PinVQFNWithExposedThermalPad (TopView) BUS MID EGN TST W W BUS MID EGN TST W W V P R B S S V P R B S S 24 23 22 21 20 19 24 23 22 21 20 19 VBUS 1 18 PGND VBUS 1 18 PGND D+ 2 17 PGND PSEL 2 17 PGND D– 3 16 SYS PG 3 bq24192 16 SYS bq24190 bq24192I STAT 4 15 SYS STAT 4 15 SYS SCL 5 14 BAT SCL 5 14 BAT SDA 6 13 BAT SDA 6 13 BAT 7 8 9 10 11 12 7 8 9 10 11 12 INT OTG CE ILIM TS1 TS2 INT OTG CE ILIM TS1 TS2 Bluepinsindicatedifferenceinpinnames/functionalitybetweendevices. PinFunctions PIN bq24192 NUMBER TYPE DESCRIPTION bq24190 bq24192I ChargerInputVoltage.Theinternaln-channelreverseblockMOSFET(RBFET)isconnectedbetweenVBUS VBUS VBUS 1,24 P andPMIDwithVBUSonsource.Placea1-µFceramiccapacitorfromVBUStoPGNDandplaceitascloseas possibletoIC.(RefertoApplicationInformationSectionfordetails) I PositivelineoftheUSBdatalinepair.D+/D–basedUSBhost/chargingportdetection.Thedetectionincludes D+ – 2 Analog datacontactdetection(DCD)andprimarydetectioninbc1.2. I – PSEL 2 Powersourceselectioninput.HighindicatesaUSBhostsourceandLowindicatesanadaptersource. Digital I NegativelineoftheUSBdatalinepair.D+/D–basedUSBhost/chargingportdetection.Thedetectionincludes D– – 3 Analog datacontactdetection(DCD)andprimarydetectioninbc1.2. Opendrainactivelowpowergoodindicator.Connecttothepulluprailvia10-kΩresistor.LOWindicatesa O – PG 3 goodinputsourceiftheinputvoltageisbetweenUVLOandACOV,aboveSLEEPmodethreshold,andcurrent Digital limitisabove30mA. Opendrainchargestatusoutputtoindicatevariouschargeroperation.Connecttothepulluprailvia10-kΩ. O LOWindicateschargeinprogress.HIGHindicateschargecompleteorchargedisabled.Whenanyfault STAT STAT 4 Digital conditionoccurs,STATpininbq24190,bq24192blinksat1Hz,andSTATpininbq24192Ihasa10-kΩ resistortoground. I SCL SCL 5 I2CInterfaceclock.ConnectSCLtothelogicrailthrougha10-kΩresistor. Digital I/O SDA SDA 6 I2CInterfacedata.ConnectSDAtothelogicrailthrougha10-kΩresistor. Digital O Open-drainInterruptOutput.ConnecttheINTtoalogicrailvia10-kΩresistor.TheINTpinsendsactivelow, INT INT 7 Digital 256-uspulsetohosttoreportchargerdevicestatusandfault. USBcurrentlimitselectionpinduringbuckmode,andactivehighenablepinduringboostmode. I InbuckmodewithUSBhost(PSEL=High),whenOTG=High,IINlimit=500mAandwhenOTG=Low,IIN OTG OTG 8 Digital limit=100mA. TheboostmodeisactivatedwhentheREG01[5:4]=10andOTGpinisHigh. I ActivelowChargeEnablepin.BatterychargingisenabledwhenREG01[5:4]=01andCEpin=Low.CEpin CE CE 9 Digital mustbepulledhighorlow. 4 SubmitDocumentationFeedback Copyright©2012–2014,TexasInstrumentsIncorporated ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I www.ti.com SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 PinFunctions(continued) PIN bq24192 NUMBER TYPE DESCRIPTION bq24190 bq24192I ILIMpinsetsthemaximuminputcurrentlimitbyregulatingtheILIMvoltageat1V.Aresistorisconnectedfrom I ILIM ILIM 10 Analog IloLwIMerpoinnetosgertobuyndILtIoMsaentdthbeymI2aCxiRmEuGm0l0im[2it:0a].sTIIhNeMAmXi=nim(1uVm/RiInLIpMu)t×cu5r3r0e.nTthperoagcratumamliendpuotncuILrIrMenptilnimisit5is0t0hemA. Temperaturequalificationvoltageinput#1.Connectanegativetemperaturecoefficientthermistor.Program I TS1 TS1 11 temperaturewindowwitharesistordividerfromREGNtoTS1toGND.ChargesuspendswheneitherTSpinis Analog outofrange.Recommend103AT-2thermistor. Temperaturequalificationvoltageinput#2.Connectanegativetemperaturecoefficientthermistor.Program I TS2 TS2 12 temperaturewindowwitharesistordividerfromREGNtoTS2toGND.ChargesuspendswheneitherTSpinis Analog outofrange.Recommend103AT-2thermistor. Batteryconnectionpointtothepositiveterminalofthebatterypack.TheinternalBATFETisconnected BAT BAT 13,14 P betweenBATandSYS.Connecta10µFcloselytotheBATpin. Systemconnectionpoint.TheinternalBATFETisconnectedbetweenBATandSYS.Whenthebatteryfalls SYS SYS 15,16 P belowtheminimumsystemvoltage,switch-modeconverterkeepsSYSabovetheminimumsystemvoltage. (RefertoApplicationInformationSectionforinductorandcapacitorselection.) Powergroundconnectionforhigh-currentpowerconverternode.Internally,PGNDisconnectedtothesource ofthen-channelLSFET.OnPCBlayout,connectdirectlytogroundconnectionofinputandoutputcapacitors PGND PGND 17,18 P ofthecharger.AsinglepointconnectionisrecommendedbetweenpowerPGNDandtheanalogGNDnearthe ICPGNDpin. O Switchingnodeconnectingtooutputinductor.InternallySWisconnectedtothesourceofthen-channel SW SW 19,20 Analog HSFETandthedrainofthen-channelLSFET.Connectthe0.047-µFbootstrapcapacitorfromSWtoBTST. PWMhighsidedriverpositivesupply.Internally,theBTSTisconnectedtotheanodeoftheboost-strapdiode. BTST BTST 21 P Connectthe0.047-µFbootstrapcapacitorfromSWtoBTST. PWMlowsidedriverpositivesupplyoutput.Internally,REGNisconnectedtothecathodeoftheboost-strap REGN REGN 22 P diode.Connecta4.7-µF(10-Vrating)ceramiccapacitorfromREGNtoanalogGND.Thecapacitorshouldbe placedclosetotheIC.REGNalsoservesasbiasrailofTS1andTS2pins. ConnectedtothedrainofthereverseblockingMOSFETandthedrainofHSFET.Giventhetotalinput O PMID PMID 23 capacitance,connecta1-µFcapacitoronVBUStoPGND,andtherestallonPMIDtoPGND.(Referto Analog ApplicationInformationSectionfordetails) Thermal ExposedpadbeneaththeICforheatdissipation.Alwayssolderthermalpadtotheboard,andhaveviasonthe – – P Pad thermalpadplanestar-connectingtoPGNDandgroundplaneforhigh-currentpowerconverter. 8 Specifications 8.1 Absolute Maximum Ratings(1) overoperatingfree-airtemperaturerange(unlessotherwisenoted) MIN MAX UNIT VBUS –2 22 V PMID –0.3 22 V STAT,PG –0.3 20 V BTST –0.3 26 V Voltagerange(with SW –2 20 V respecttoGND) BAT,SYS(converternotswitching) –0.3 6 V SDA,SCL,INT,OTG,ILIM,REGN,TS1,TS2,CE,PSEL,D+,D– –0.3 7 V BTSTTOSW –0.3 –7 V PGNDtoGND –0.3 –0.3 V Outputsinkcurrent INT,STAT,PG 6 mA Junctiontemperature –40°C 150 °C Storagetemperature,T –65 150 °C stg (1) Stressesbeyondthoselistedunderabsolutemaximumratingsmaycausepermanentdamagetothedevice.Thesearestressratings only,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunderrecommendedoperating conditionsisnotimplied.Exposuretoabsolute-maximum-ratedconditionsforextendedperiodsmayaffectdevicereliability.Allvoltage valuesarewithrespecttothenetworkgroundterminalunlessotherwisenoted. Copyright©2012–2014,TexasInstrumentsIncorporated SubmitDocumentationFeedback 5 ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 www.ti.com 8.2 ESD Ratings VALUE UNIT Humanbodymodel(HBM),perANSI/ESDA/JEDECJS-001(1) 1000 V(ESD) Electrostaticdischarge Chargeddevicemodel(CDM),perJEDECspecificationJESD22- V C101(2) 250 (1) JEDECdocumentJEP155statesthat500-VHBMallowssafemanufacturingwithastandardESDcontrolprocess. (2) JEDECdocumentJEP157statesthat250-VCDMallowssafemanufacturingwithastandardESDcontrolprocess. 8.3 Recommended Operating Conditions MIN MAX UNIT V Inputvoltage 3.9 17(1) V IN I Inputcurrent 3 A IN I Outputcurrent(SYS) 4.5 A SYS V Batteryvoltage 4.4 V BAT Fastchargingcurrent 4.5 A 6(continuous) IBAT 9(peak) DischargingcurrentwithinternalMOSFET A (upto1sec duration) T Operatingfree-airtemperaturerange –40 85 °C A (1) TheinherentswitchingnoisevoltagespikesshouldnotexceedtheabsolutemaximumratingoneithertheBTSTorSWpins.Atight layoutminimizesswitchingnoise. 8.4 Thermal Information bq2419x THERMALMETRIC(1) UNIT RGE(24PIN) R Junction-to-ambientthermalresistance 32.2 θJA R Junction-to-case(top)thermalresistance 29.8 θJCtop R Junction-to-boardthermalresistance 9.1 θJB °C/W ψ Junction-to-topcharacterizationparameter 0.3 JT ψ Junction-to-boardcharacterizationparameter 9.1 JB R Junction-to-case(bottom)thermalresistance 2.2 θJCbot (1) Formoreinformationabouttraditionalandnewthermalmetrics,seetheICPackageThermalMetricsapplicationreport,SPRA953. 8.5 Electrical Characteristics V <V <V andV >V +V ,T =–40°Cto125°CandT =25°Cfortypicalvaluesunlessother VBUS_UVLOZ VBUS ACOV VBUS BAT SLEEP J J noted. PARAMETER TESTCONDITIONS MIN TYP MAX UNIT QUIESCENTCURRENTS VVBUS<VUVLO,VBAT=4.2V,leakagebetween 5 µA BATandVBUS High-ZMode,ornoVBUS,BATFETdisabled IBAT Batterydischargecurrent(BAT,SW,SYS) (REG07[5]=1),–40°Cto85°C 12 20 µA High-ZMode,ornoVBUS,REG07[5]=0,–40°C 32 55 µA to85°C VVBUS=5V,High-Zmode 15 30 µA VVBUS=17V,High-Zmode 30 50 µA VVBUS>VUVLO,VVBUS>VBAT,converternot 1.5 3 mA switching IVBUS Inputsupplycurrent(VBUS) VVBUS>VUVLO,VVBUS>VBAT,converter 4 mA switching,VBAT=3.2V,ISYS=0A VVBUS>VUVLO,VVBUS>VBAT,converter 15 mA switching,VBAT=3.8V,ISYS=0A IOTGBOOST Batterydischargecurrentinboostmode VcoBnAvTer=te4r.s2wVit,chBionogstmode,IVBUS=0A, 4 mA 6 SubmitDocumentationFeedback Copyright©2012–2014,TexasInstrumentsIncorporated ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I www.ti.com SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 Electrical Characteristics (continued) V <V <V andV >V +V ,T =–40°Cto125°CandT =25°Cfortypicalvaluesunlessother VBUS_UVLOZ VBUS ACOV VBUS BAT SLEEP J J noted. PARAMETER TESTCONDITIONS MIN TYP MAX UNIT VBUS/BATPOWERUP VVBUS_OP VBUSoperatingrange 3.9 17 V VVBUS_UVLOZ VBUSforactiveI2C,nobattery VVBUSrising 3.6 V VSLEEP Sleepmodefallingthreshold VVBUSfalling,VVBUS-VBAT 35 80 120 mV VSLEEPZ Sleepmoderisingthreshold VVBUSrising,VVBUS-VBAT 170 250 350 mV VACOV VBUSover-voltagerisingthreshold VVBUSrising 17.4 18 V VACOV_HYST VBUSover-voltagefallinghysteresis VVBUSfalling 700 mV VBAT_UVLOZ BatteryforactiveI2C,noVBUS VBATrising 2.3 V VBAT_DPL Batterydepletionthreshold VBATfalling 2.4 2.6 V VBAT_DPL_HY Batterydepletionrisinghysteresis VBATrising 170 260 mV VVBUSMIN Badadapterdetectionthreshold VVBUSfalling 3.8 V IBADSRC Badadapterdetectioncurrentsource 30 mA tBADSRC Badsourcedetectionduration 30 ms POWERPATHMANAGEMENT VSYS_RANGE Typicalsystemregulationvoltage IRsEysG=010[3A:1,]Q=41o0ff1,,VVBSAYTSuMpINto=43..25VV, 3.5 4.35 V VSYS_MIN Systemvoltageoutput REG01[3:1]=101,VSYSMIN=3.5V 3.55 3.65 V InternaltopreverseblockingMOSFETon- RON(RBFET) resistance MeasuredbetweenVBUSandPMID 23 38 mΩ InternaltopswitchingMOSFETon-resistance TJ=–40°Cto85°C 27 35 RON(HSFET) betweenPMIDandSW TJ=-40°Cto125°C 27 45 mΩ InternalbottomswitchingMOSFETon-resistance TJ=–40°Cto85°C 32 45 RON(LSFET) betweenSWandPGND TJ=-40°Cto125°C 32 48 mΩ VFWD BATFETforwardvoltageinsupplementmode BATdischargecurrent10mA 30 mV VSYS_BAT SYS/BATComparator VSYSfalling 90 mV VBATGD Batterygoodcomparatorrisingthreshold VBATrising 3.55 V VBATGD_HYST Batterygoodcomparatorfallingthreshold VBATfalling 100 mV BATTERYCHARGER VBAT_REG_ACC Chargevoltageregulationaccuracy VBAT=4.112Vand4.208V –0.5% 0.5% VBAT=3.8V,ICHG=1792mA,TJ=25°C –4% 4% IICHG_REG_ACC Fastchargecurrentregulationaccuracy VBAT=3.8V,ICHG=1792mA,TJ=–20°Cto –7% 7% 125°C ICHG_20pct Chargecurrentwith20%optionon VBAT=3.1V,ICHG=104mA,REG02=03 75 100 150 mA VBATLOWV BatteryLOWVfallingthreshold Fastchargetoprecharge,REG04[1]=1 2.6 2.8 2.9 V VBATLOWV_HYST BatteryLOWVrisingthreshold Prechargetofastcharge,REG04[1]=1 2.8 3.0 3.1 V IPRECHG_ACC Prechargecurrentregulationaccuracy VBAT=2.6V,ICHG=256mA –20% 20% ITERM_ACC Terminationcurrentaccuracy ITERM=256mA,ICHG=960mA –20% 20% VSHORT BatteryShortVoltage VBATfalling 2.0 V VSHORT_HYST BatteryShortVoltagehysteresis VBATrising 200 mV ISHORT Batteryshortcurrent VBAT<2.2V 100 mA VRECHG RechargethresholdbelowVBAT_REG VBATfalling,REG04[0]=0 100 mV tRECHG Rechargedeglitchtime VBATfalling,REG04[0]=0 20 ms TJ=25°C 12 15 RON_BATFET SYS-BATMOSFETon-resistance mΩ TJ=–40°Cto125°C 12 20 Copyright©2012–2014,TexasInstrumentsIncorporated SubmitDocumentationFeedback 7 ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 www.ti.com Electrical Characteristics (continued) V <V <V andV >V +V ,T =–40°Cto125°CandT =25°Cfortypicalvaluesunlessother VBUS_UVLOZ VBUS ACOV VBUS BAT SLEEP J J noted. PARAMETER TESTCONDITIONS MIN TYP MAX UNIT INPUTVOLTAGE/CURRENTREGULATION VINDPM_REG_ACC Inputvoltageregulationaccuracy REG00[6:3]=0110(4.36V)or1011(4.76V) –2% 2% USB100 85 100 mA USBInputcurrentregulationlimit,VBUS=5V, USB150 125 150 mA IUSB_DPM currentpulledfromSW USB500 440 500 mA USB900 750 900 mA IADPT_DPM Inputcurrentregulationaccuracy Typicalinputcurrentof1.5AbasedonKLIM 1.35 1.5 1.65 A IIN_START Inputcurrentlimitduringsystemstartup VSYS<2.2V 100 mA KILIM IIN=KILIM/RILIM IINDPM=1.5A 435 485 530 AxΩ D+/D-DETECTION VD+_SRC D+voltagesource 0.5 0.6 0.7 V ID+_SRC D+connectioncheckcurrentsource 7 14 µA ID–_SINK D–currentsink 50 100 150 µA D–,switchopen –1 1 µA ID_LKG LeakagecurrentintoD+/D– D+,switchopen –1 1 µA VD+_LOW D+Lowcomparatorthreshold 0.7 0.8 V VD–_LOWdatref D–Lowcomparatorthreshold 250 400 mV RD–_DWN D–Pulldownforconnectioncheck 14.25 24.8 kΩ Chargingtimerwith100-mAUSBhostindefault tSDP_DEFAULT mode 45 mins BATOVER-VOLTAGEPROTECTION VBATOVP Batteryover-voltagethreshold VBATrising,aspercentageofVBAT_REG 104% VBATOVP_HYST Batteryover-voltagehysteresis VBATfalling,aspercentageofVBAT_REG 2% Batteryover-voltagedeglitchtimetodisable tBATOVP charge 1 µs THERMALREGULATIONANDTHERMALSHUTDOWN TJunction_REG Junctiontemperatureregulationaccuracy REG06[1:0]=11 120 °C TSHUT Thermalshutdownrisingtemperature Temperatureincreasing 160 °C TSHUT_HYS Thermalshutdownhysteresis 30 °C Thermalshutdownrisingdeglitch Temperatureincreasingdelay 1 ms Thermalshutdownfallingdeglitch Temperaturedecreasingdelay 1 ms COLD/HOTTHERMISTERCOMPARATOR(bq24190,bq24192,bq24192I) Coldtemperaturethreshold,TSpinvoltagerising Chargersuspendscharge.Aspercentageto 73.5 VLTF threshold VREGN 73% % 74% VLTF_HYS Coldtemperaturehysteresis,TSpinvoltagefalling AspercentagetoVREGN 0.2% 0.4% 0.6% 47.2 VHTF HottemperatureTSpinvoltagerisingthreshold AspercentagetoVREGN 46.6% % 48.8% Cut-offtemperatureTSpinvoltagefalling 44.7 VTCO threshold AspercentagetoVREGN 44.2% % 45.2% Deglitchtimefortemperatureoutofrange detection VTS>VLTF,orVTS<VTCO,orVTS<VHTF 10 ms CHARGEOVER-CURRENTCOMPARATOR IHSFET_OCP HSFETover-currentthreshold 5.3 7 A IBATFET_OCP Systemoverloadthreshold 9 A CHARGEUNDER-CURRENTCOMPARATOR(CYCLE-BY-CYCLE) VLSFET_UCP LSFETchargeunder-currentfallingthreshold Fromsyncmodetonon-syncmode 100 mA PWMOPERATION FSW PWMSwitchingfrequency,anddigitalclock 1300 1500 1700 kHz DMAX MaximumPWMdutycycle 97% 8 SubmitDocumentationFeedback Copyright©2012–2014,TexasInstrumentsIncorporated ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I www.ti.com SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 Electrical Characteristics (continued) V <V <V andV >V +V ,T =–40°Cto125°CandT =25°Cfortypicalvaluesunlessother VBUS_UVLOZ VBUS ACOV VBUS BAT SLEEP J J noted. PARAMETER TESTCONDITIONS MIN TYP MAX UNIT VBTST-VSWwhenLSFETrefreshpulseis 3.6 requested,VBUS=5V VBTST_REFRESH Bootstraprefreshcomparatorthreshold V VBTST-VSWwhenLSFETrefreshpulseis 4.5 requested,VBUS>6V BOOSTMODEOPERATION VOTG_REG OTGoutputvoltage I(VBUS)=0 5.00 V VOTG_REG_ACC OTGoutputvoltageaccuracy I(VBUS)=0 –2% 2% REG01[0]=0 0.5 A IOTG OTGmodeoutputcurrent REG01[0]=1 1.3 A VOTG_OVP OTGover-voltagethreshold 5.3 5.5 V IOTG_ILIM LSFETcycle-by-cyclecurrentlimit 3.2 4.6 A IOTG_HSZCP HSFETundercurrentfallingthreshold 100 mA REG01[0]=1 1.4 1.8 2.7 IRBFET_OCP RBFETover-currentthreshold A REG01[0]=0 0.6 1.1 1.8 REGNLDO VVBUS=10V,IREGN=40mA 5.6 6 6.4 V VREGN REGNLDOoutputvoltage VVBUS=5V,IREGN=20mA 4.75 4.8 V IREGN REGNLDOcurrentlimit VVBUS=10V,VREGN=3.8V 50 mA LOGICI/OPINCHARACTERISTICS(OTG,CE,PSEL,STAT,PG) VILO Inputlowthreshold 0.4 V VIH Inputhighthreshold 1.3 V VOUT_LO Outputlowsaturationvoltage Sinkcurrent=5mA 0.4 V IBIAS Highlevelleakagecurrent Pulluprail1.8V 1 µA I2CINTERFACE(SDA,SCL,INT) VIH Inputhighthresholdlevel VPULL-UP=1.8V,SDAandSCL 1.3 V VIL Inputlowthresholdlevel VPULL-UP=1.8V,SDAandSCL 0.4 V VOL Outputlowthresholdlevel Sinkcurrent=5mA 0.4 V IBIAS High-levelleakagecurrent VPULL-UP=1.8V,SDAandSCL 1 µA fSCL SCLclockfrequency 400 kHz DIGITALCLOCKANDWATCHDOGTIMER fHIZ Digitalcrudeclock REGNLDOdisabled 15 35 50 kHz fDIG Digitalclock REGNLDOenabled 1300 1500 1700 kHz tWDT REG05[5:4]=11 REGNLDOenabled 136 160 sec 8.6 Typical Characteristics Table1.TableofFigures FIGURENO. SystemLightLoadEfficiencyvsSystemLoadCurrent Figure1 SYSVoltageRegulationvsSystemLoad Figure2 ChargingEfficiencyvsChargingCurrent Figure3 BoostModeEfficiencyvsVBUSLoadCurrent Figure4 BoostModeVBUSVoltageRegulationvsVBUSLoadCurrent Figure5 SYSVoltagevsTemperature Figure6 BATVoltagevsTemperature Figure7 InputCurrentLimitvsTemperature Figure8 ChargeCurrentvsTemperature Figure9 Copyright©2012–2014,TexasInstrumentsIncorporated SubmitDocumentationFeedback 9 ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 www.ti.com 95 3.70 90 3.68 Efficiency (%) 8805 YS Voltage (V) 33..6646 S 75 VBUS = 5 V 3.62 VBUS = 5 V VBUS = 9 V VBUS = 17 V 70 3.60 0 100 200 300 400 500 600 0 1 2 3 4 5 Load Current (mA) C012 System Load Current (A) C014 Figure1. SystemLightLoadEfficiencyvsSystemLoad Figure2.SYSVoltageRegulationvsSystemLoad Current 95 100 VBUS = 5 V VBAT = 3.2 V VBUS = 7 V VBAT = 3.8 V 93 VBUS = 9 V 95 VBUS = 12 V %) %) y ( 91 y ( nc nc 90 e e Effici 89 Effici 85 87 85 80 0 1 2 3 4 5 0 500 1000 1500 Load Current (A) C011 VBUS Load Current (A) C013 Figure3.ChargingEfficiencyvsChargingCurrent Figure4.BoostModeEfficiencyvsVBUSLoadCurrent 5.04 3.80 SYSMIN 3.5 V 5.02 3.75 VBUS Voltage (V) 4445....99904680 SYS Voltage (V) 333...667050 VBAT = 3.2 V 3.55 4.92 VBAT = 3.8 V VBAT = 4.2 V 4.90 3.50 0 200 400 600 800 1000 1200 1400 ±50 0 50 100 150 VBUS Load Current (A) C005 Temperature (ƒC) C001 Figure5.BoostModeVBUSVoltageRegulationvsVBUS Figure6.SYSVoltagevsTemperature LoadCurrent 10 SubmitDocumentationFeedback Copyright©2012–2014,TexasInstrumentsIncorporated ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I www.ti.com SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 4.25 2000 1800 4.21 A) 1600 e(V) 4.17 Limit ( 1400 TVoltag 4.13 Current 11020000 BA ut IIN = 500 mA p In 800 IIN = 1.5 A 4.09 VREG = 4.112V 600 IIN = 2 A VREG = 4.208V 4.05 400 –50 0 50 100 150 ±50 0 50 100 150 Temperature(°C) C002 Temperature (ƒC) C003 Figure7.BATVoltagevsTemperature Figure8.InputCurrentLimitvsTemperature 5 4.5 4 A)3.5 ( nt 3 e Curr2.5 ge 2 ar Ch1.5 1 0.5 TREG80C TREG120C 0 40 50 60 70 80 90 100 110 120 130 Temperature(°C) C009 Figure9.ChargeCurrentvsTemperature Copyright©2012–2014,TexasInstrumentsIncorporated SubmitDocumentationFeedback 11 ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 www.ti.com 9 Detailed Description 9.1 Overview The bq24190, bq24192, bq24192I is an I2C controlled power path management device and a single cell Li-Ion batterycharger.Itintegratestheinputreverse-blockingFET(RBFET,Q1),high-sideswitchingFET(HSFET,Q2), low-side switching FET (LSFET, Q3), and BATFET (Q4) between system and battery. The device also integrates thebootstrapdiodeforthehigh-sidegatedrive. 9.2 Functional Block Diagram VBUS PMID Q1 V (VBUS_UVLOZ) UVLO Q1Gate Control V +V (BATZ) (SLEEP) SLEEP REGN REGN LDO EN_HIZ ACOV V (AC0V) BTST FBO VBUS VBUS_OVP_BOOST V (OTG_OVP) I(Q2) Q2_UCP_BOOST VINDPM I(OTG_HSZCP) SW I(Q3) Q3_OCP_BOOST Q2 IINDPM I(OTG_ILIM) CCOONNVETRROTELR BAT BATOVP REGN ICTJ V(BAT_REG)x V(BATOVP) BAT TREG VBAT_REG I(LSFET_UCP) UCP I(Q2) Q3 PGND SYS I(Q3) Q2_OCP I VSYSMIN (HSFET_OCP) ICHG_REG EN_CHENAR_HGIEZ REFRESH V(BTST-SW) V EN_BOOST (BTST_REFRESH) SYS ICHG VBAT_REG REF ICHG_REG Q4Gate DAC I Control BAD_SRC (IBDACDSRC) Q4 ILIM CONVERTER BAT D+(190) USBHost CMOSATNCATHTRIENOEL TSHUT TICSHTUJT D–(190) DAedteacpttieorn USB BAT_GD BAT bq2419x PSEL(192/192I) Adapter V(BATGD) 1.5A OTG RECHRG V(BAT_REG)- V(RECHG) BAT INT bq24190/192 CCOHNATRRGOEL TERMINATION IITCEHRGM THBEARTMTEISRTYER TS1 STAT STATE SUSPEND SENSING bq24192I MACHINE BATLOWV BVA(BTATLOWV) (1b9q22I4H1o9t0/C/1o9ld2)/ TS2 PG(192/192I) I2C V Interface BATSHORT (SHORT) BAT SCL SDA CE 12 SubmitDocumentationFeedback Copyright©2012–2014,TexasInstrumentsIncorporated ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I www.ti.com SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 9.3 Feature Description 9.3.1 DevicePowerUp 9.3.1.1 Power-On-Reset(POR) The internal bias circuits are powered from the higher voltage of VBUS and BAT. When VBUS or VBAT rises above UVLOZ, the sleep comparator, battery depletion comparator and BATFET driver are active. I2C interface is ready for communication and all the registers are reset to default value. The host can access all the registers afterPOR. 9.3.1.2 PowerUpfromBatterywithoutDCSource If only battery is present and the voltage is above depletion threshold (V ), the BATFET turns on and BAT_DEPL connects battery to system. The REGN LDO stays off to minimize the quiescent current. The low R in DSON BATFET and the low quiescent current on BAT minimize the conduction loss and maximize the battery run time. The device always monitors the discharge current through BATFET. When the system is overloaded or shorted, thedevicewillimmediatelyturnoffBATFETandkeepBATFEToffuntiltheinputsourceplugsinagain. 9.3.1.2.1 BATFETTurnOff The BATFET can be forced off by the host through I2C REG07[5]. This bit allows the user to independently turn off the BATFET when the battery condition becomes abnormal during charging. When BATFET is off, there is no pathtochargeordischargethebattery. When battery is not attached, the BATFET should be turned off by setting REG07[5] to 1 to disable charging and supplementmode. 9.3.1.2.2 ShippingMode When end equipment is assembled, the system is connected to battery through BATFET. There will be a small leakage current to discharge the battery even when the system is powered off. In order to extend the battery life during shipping and storage, the device can turn off BATFET so that the system voltage is zero to minimize the leakage. In order to keep BATFET off during shipping mode, the host has to disable the watchdog timer (REG05[5:4] = 00)anddisableBATFET(REG07[5]=1)atthesametime. OncetheBATFETisdisabled,theBATFETcanbeturnedonbyplugginginadapter. 9.3.1.3 PowerUpfromDCSource When the DC source plugs in, the bq24190, bq24192, bq24192I checks the input source voltage to turn on REGNLDOandallthebiascircuits.Italsocheckstheinputcurrentlimitbeforestartsthebuckconverter. 9.3.1.3.1 REGNLDO The REGN LDO supplies internal bias circuits as well as the HSFET and LSFET gate drive. The LDO also provides bias rail to TS1/TS2 external resistors. The pull-up rail of STAT and PG can be connected to REGN as well. TheREGNisenabledwhenalltheconditionsarevalid. 1. VBUSaboveUVLOZ 2. VBUSabovebattery+V inbuckmodeorVBUSbelowbattery+V inboostmode SLEEPZ SLEEPZ 3. Aftertypical220msdelay(100msminimum)iscomplete If one of the above conditions is not valid, the device is in high impedance mode (HIZ) with REGN LDO off. The devicedrawslessthan50µAfromVBUSduringHIZstate.Thebatterypowersupthesystemwhenthedeviceis inHIZ. 9.3.1.3.2 InputSourceQualification After REGN LDO powers up, the bq24190, bq24192, bq24192I checks the current capability of the input source. Theinputsourcehastomeetthefollowingrequirementstostartthebuckconverter. Copyright©2012–2014,TexasInstrumentsIncorporated SubmitDocumentationFeedback 13 ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 www.ti.com Feature Description (continued) 1. VBUSvoltagebelow18V(notinACOV) 2. VBUSvoltageabove3.8Vwhenpulling30mA(poorsourcedetection) Once the input source passes all the conditions above, the status register REG08[2] goes high and the PG pin (bq24192,bq24192I)goeslow.AnINTisassertedtothehost. Ifthedevicefailsthepoorsourcedetection,itwillrepeatthedetectionevery2seconds. 9.3.1.3.3 InputCurrentLimitDetection The USB ports on personal computers are convenient charging source for portable devices (PDs). If the portable device is attached to a USB host, the USB specification requires the portable device to draw limited current (100 mA/500 mA in USB 2.0, and 150 mA/900 mA in USB 3.0). If the portable device is attached to a charging port, it isallowedtodrawupto1.5A. After the PG is LOW or REG08[2] goes HIGH, the charger device always runs input current limit detection when aDCsourceplugsinunlessthechargerisinHIZduringhostmode. The bq24190 follows battery charging specification 1.2 (bc1.2) to detect input source through USB D+/D– lines. Thebq24192andbq24192IsetinputcurrentlimitthroughPSELandOTGpins. Aftertheinputcurrentlimitdetectionisdone,thehostcanwritetoREG00[2:0]tochangetheinputcurrentlimit. 9.3.1.3.4 D+/D–DetectionSetsInputCurrentLimitinbq24190 The bq24190 contains a D+/D– based input source detection to program the input current limit. The D+/D- detectionhastwosteps:datacontactdetect(DCD)followedbyprimarydetection. D+ VDP_SRC VLGC_HI IDP_SRC CHG_DET VDAC_REF IDM_SINK D- RDM_DWN Figure10. USBD+/D-Detection DCD (Data Contact Detection) uses a current source to detect when the D+/D– pins have made contact during anattachevent.Theprotocolfordatacontactdetectisasfollows: • DetectVBUSpresentandREG08[2]=1(powergood) • TurnonD+I andtheD–pull-downresistorR for40ms DP_SRC DM_DWN • IftheUSBconnectorisproperlyattached,theD+linegoesfromHIGHtoLOW,waitupto0.5sec. • TurnoffI anddisconnectR DP_SRC DM_DWN The primary detection is used to distinguish between USB host (Standard Down Stream Port, or SDP) and different type of charging ports (Charging Down Stream Port, or CDP, and Dedicated Charging Port, or DCP). Theprotocolforprimarydetectionisasfollows: • TurnonV onD+andI onD– for40ms DP_SRC DM_SINK 14 SubmitDocumentationFeedback Copyright©2012–2014,TexasInstrumentsIncorporated ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I www.ti.com SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 Feature Description (continued) • If PD is attached to a USB host (SDP), the D– is low. If PD is attached to a charging port (CDP or DCP), the D–ishigh • TurnoffV andI DP_SRC DM_SINK Table2showstheinputcurrentlimitsettingafterD+/D–detection. Table2.bq24190USBD+/D– Detection D+/D–DETECTION OTG INPUTCURRENTLIMIT REG08[7:6] 0.5sectimerexpiredinDCD — 100mA 00 (D+/D-floating) USBhost LOW 100mA 01 USBhost HIGH 500mA 01 Chargingport — 1.5A 10 9.3.1.3.5 PSEL/OTGPinsSetInputCurrentLimitinbq24192,bq24192I The bq24192 and bq24192I has PSEL instead of D+/D–. It directly takes the USB PHY device output to decide whethertheinputisUSBhostorchargingport. Table3.bq24192,bq24192IInputCurrentLimitDetection PSEL OTG INPUTCURRENTLIMIT REG08[7:6] HIGH LOW 100mA 01 HIGH HIGH 500mA 01 1.5A(bq24192I) LOW — 10 3A(bq24192) 9.3.1.3.6 HIZStatewth100mAUSBHost In battery charging spec, the good battery threshold is the minimum charge level of a battery to power up the portable device successfully. When the input source is 100-mA USB host, and the battery is above bat-good threshold (V ), the device follows battery charging spec and enters high impedance state (HIZ). In HIZ state, BATGD the device is in the lowest quiescent state with REGN LDO and the bias circuits off. The charger device sets REG00[7] to 1, and the VBUS current during HIZ state will be less than 30 µA. The system is supplied by the battery. Once the charger device enters HIZ state in host mode, it stays in HIZ until the host writes REG00[7] = 0. When theprocessorhostwakesup,itisrecommendedtofirstcheckifthechargerisinHIZstate. In default mode, the charger IC will reset REG00[7] back to 0 when input source is removed. When another sourceplugsin,thechargerICwillrundetectionagain,andupdatetheinputcurrentlimit. 9.3.1.3.7 ForceInputCurrentLimitDetection The host can force the charger device to run input current limit detection by setting REG07[7] = 1. After the detectioniscomplete,REG07[7]willreturnto0byitself. 9.3.1.4 ConverterPower-Up After the input current limit is set, the converter is enabled and the HSFET and LSFET start switching. If battery chargingisdisabled,BATFETturnsoff.Otherwise,BATFETstaysontochargethebattery. The bq24190, bq24192, bq24192I provides soft-start when ramp up the system rail. When the system rail is below 2.2 V, the input current limit is forced to 100 mA. After the system rises above 2.2 V, the charger device setstheinputcurrentlimitsetbythelowervaluebetweenregisterandILIMpin. As a battery charger, the bq24190, bq24192, bq24192I deploys a 1.5-MHz step-down switching regulator. The fixed frequency oscillator keeps tight control of the switching frequency under all conditions of input voltage, batteryvoltage,chargecurrentandtemperature,simplifyingoutputfilterdesign. Copyright©2012–2014,TexasInstrumentsIncorporated SubmitDocumentationFeedback 15 ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 www.ti.com A type III compensation network allows using ceramic capacitors at the output of the converter. An internal saw- tooth ramp is compared to the internal error control signal to vary the duty cycle of the converter. The ramp heightisproportionaltothePMIDvoltagetocanceloutanyloopgainvariationduetoachangeininputvoltage. In order to improve light-load efficiency, the device switches to PFM control at light load when battery is below minimum system voltage setting or charging is disabled. During the PFM operation, the switching duty cycle is setbytheratioofSYSandVBUS. 9.3.1.5 BoostModeOperationfromBattery The bq24190, bq24192, bq24192I supports boost converter operation to deliver power from the battery to other portable devices through USB port. The boost mode output current rating meets the USB On-The-Go 500-mA output requirement. The maximum output current is 1.3 A. The boost operation can be enabled if the following conditionsarevalid: 1. BATaboveBATLOWVthreshold(V setbyREG04[1]) BATLOWV 2. VBUSlessthanBAT+V (insleepmode) SLEEP 3. Boostmodeoperationisenabled(OTGpinHIGHandREG01[5:4]=10) 4. After220-msdelayfromboostmodeenable In boost mode, the bq24190, bq24192, bq24192I employs a 1.5-MHz step-up switching regulator. Similar to buck operation,thedeviceswitchesfromPWMoperationtoPFMoperationatlightloadtoimproveefficiency. During boost mode, the status register REG08[7:6] is set to 11, the VBUS output is 5 V and the output current canreachupto500mAor1.3A,selectedviaI2C(REG01[0]). Any fault during boost operation, including VBUS over-voltage or over-current, sets the fault register REG09[6] to 1andanINTisasserted. 9.3.2 PowerPathManagement The bq24190, bq24192, bq24192I accommodates a wide range of input sources from USB, wall adapter, to car battery. The device provides automatic power path selection to supply the system (SYS) from input source (VBUS),battery(BAT),orboth. 9.3.2.1 NarrowVDCArchitecture The device deploys Narrow VDC architecture (NVDC) with BATFET separating system from battery. The minimum system voltage is set by REG01[3:1]. Even with a fully depleted battery, the system is regulated above theminimumsystemvoltage(default3.5V). When the battery is below minimum system voltage setting, the BATFET operates in linear mode (LDO mode), and the system is 150 mV above the minimum system voltage setting. As the battery voltage rises above the minimum system voltage, BATFET is fully on and the voltage difference between the system and battery is the V ofBATFET. DS When the battery charging is disabled or terminated, the system is always regulated at 150 mV above the minimumsystemvoltagesetting.ThestatusregisterREG08[0]goeshighwhenthesystemisinminimumsystem voltageregulation. 16 SubmitDocumentationFeedback Copyright©2012–2014,TexasInstrumentsIncorporated ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I www.ti.com SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 4.5 4.3 Charge Enabled 4.1 Charge Disabled SYS 3.9 (V) 3.7 3.5 Minimum System Voltage 3.3 3.1 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 BAT(V) Figure11. V(SYS)vsV(BAT) 9.3.2.2 DynamicPowerManagement To meet maximum current limit in USB spec and avoid over loading the adapter, the bq24190, bq24192, bq24192I features Dynamic Power Management (DPM), which continuously monitors the input current and input voltage. When input source is over-loaded, either the current exceeds the input current limit (REG00[2:0]) or the voltage fallsbelowtheinputvoltagelimit(REG00[6:3]).Thedevicethenreducesthechargecurrentuntiltheinputcurrent fallsbelowtheinputcurrentlimitandtheinputvoltagerisesabovetheinputvoltagelimit. When the charge current is reduced to zero, but the input source is still overloaded, the system voltage starts to drop. Once the system voltage falls below the battery voltage, the device automatically enters the supplement mode where the BATFET turns on and battery starts discharging so that the system is supported from both the inputsourceandbattery. DuringDPMmode(eitherVINDPMorIINDPM),thestatusregisterREG08[3]willgohigh. Figure 12 shows the DPM response with 9-V/1.2-A adapter, 3.2-V battery, 2.8-A charge current and 3.4-V minimumsystemvoltagesetting. Voltage VBUS 9V SYS 3.6V 3.4V BAT 3.2V 3.18V Current 4A ICHG 3.2A 2.8A ISYS 1.2A IIN 1.0A 0.5A -0.6A DPM DPM Supplement Figure12. DPMResponse Copyright©2012–2014,TexasInstrumentsIncorporated SubmitDocumentationFeedback 17 ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 www.ti.com 9.3.2.3 SupplementMode When the system voltage falls below the battery voltage, the BATFET turns on and the BATFET gate is regulated the gate drive of BATFET so that the minimum BATFET V stays at 30 mV when the current is low. DS This prevents oscillation from entering and exiting the supplement mode. As the discharge current increases, the BATFET gate is regulated with a higher voltage to reduce R until the BATFET is in full conduction. At this DSON point onwards, the BATFET V linearly increases with discharge current. Figure 13 shows the V-I curve of the DS BATFET gate regulation operation. BATFET turns off to exit supplement mode when the battery is below battery depletionthreshold. 4.5 4.0 3.5 (A) 3.0 T N 2.5 E R R 2.0 U C 1.5 1.0 0.5 0 0 5 10 15 20 25 30 35 40 45 50 55 V(BAT-SYS) (mV) Figure13. BATFETV-ICurve 9.3.3 BatteryChargingManagement The bq24190, bq24192, bq24192I charges 1-cell Li-Ion battery with up to 4.5A charge current for high capacity tablet battery. The 12-mΩ BATFET improves charging efficiency and minimizes the voltage drop during discharging. 9.3.3.1 AutonomousChargingCycle With battery charging enabled at POR (REG01[5:4] = 01), the bq24190, bq24192, bq24192I can complete a chargingcyclewithouthostinvolvement.ThedevicedefaultchargingparametersarelistedinTable4. Table4.ChargingParameterDefaultSetting DEFAULTMODE bq24190,bq24192 bq24192I Chargingvoltage 4.208V 4.112V ChargingCurrent 2.048A 1.024A Pre-chargecurrent 256mA 256mA Terminationcurrent 256mA 256mA Temperatureprofile Hot/Cold Hot/Cold Safetytimer 8hours(1) 8hours(1) (1) SeesectionChargingSafetyTimerformoreinformation. Anewchargecyclestartswhenthefollowingconditionsarevalid: • Converterstarts • BatterychargingisenabledbyI2Cregisterbit(REG01[5:4])=01andCEislow • NothermistorfaultonTS1andTS2 • Nosafetytimerfault • BATFETisnotforcedtoturnoff(REG07[5]) The charger device automatically terminates the charging cycle when the charging current is below termination threshold and charge voltage is above recharge threshold. When a full battery voltage is discharged below rechargethreshold(REG04[0]),the bq24190,bq24192,bq24192I automaticallystartsanotherchargingcycle. 18 SubmitDocumentationFeedback Copyright©2012–2014,TexasInstrumentsIncorporated ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I www.ti.com SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 The STAT output indicates the charging status of charging (LOW), charging complete or charge disable (HIGH) or charging fault (Blinking). The status register REG08[5:4] indicates the different charging phases: 00-charging disable, 01-precharge, 10-fast charge (constant current) and constant voltage mode, 11-charging done. Once a chargingcycleiscomplete,anINTisassertedtonotifythehost. The host can always control the charging operation and optimize the charging parameters by writing to the registersthroughI2C. 9.3.3.2 BatteryChargingProfile The device charges the battery in three phases: preconditioning, constant current and constant voltage. At the beginningofachargingcycle,thedevicechecksthebatteryvoltageandappliescurrent. Table5.ChargingCurrentSetting VBAT CHARGINGCURRENT REGDEFAULTSETTING REG08[5:4] <2V 100mA – 01 2V-3V REG03[7:4] 256mA 01 >3V REG02[7:2] 2048mA(bq24190/192)1024mA(bq24192I) 10 If the charger device is in DPM regulation or thermal regulation during charging, the actual charging current will be less than the programmed value. In this case, termination is temporarily disabled and the charging safety timeriscountedathalftheclockrate. Regulation Voltage (3.5V–4.4V) Battery Voltage Fast Charge Current (500mA-4020mA) Charge Current V (2.8V/3V) BAT_LOWV V (2V) BAT_SHORT I (128mA-2048mA) PRECHARGE I (128mA-2048mA) TERMINATION I (100mA) BATSHORT Trickle Charge Pre-charge Fast Charge and Voltage Regulation SafetyTimer Expiration Figure14. BatteryChargingProfile 9.3.3.3 BatteryPathImpedanceIRCompensation To speed up the charging cycle, we would like to stay in constant current mode as long as possible. In real system, the parasitic resistance, including routing, connector, MOSFETs and sense resistor in the battery pack, may force the charger device to move from constant current loop to constant voltage loop too early, extending thechargetime. The bq24190, bq24192, bq24192I allows the user to compensate for the parasitic resistance by increasing the voltage regulation set point according to the actual charge current and the resistance. For safe operation, the user should set the maximum allowed regulation voltage to REG06[4:2], and the minimum trace parasitic resistance(REG06[7:5]). ( ) V =V +lowerof I ×R andV BATREG_ACTUAL BATREG_I2C CHRG_ACTUAL COMP CLAMP (1) Copyright©2012–2014,TexasInstrumentsIncorporated SubmitDocumentationFeedback 19 ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 www.ti.com 9.3.3.4 ThermistorQualification The high capacity battery usually has two or more single cells in parallel. The bq24190, bq24192, bq24192I providestwoTSpinstomonitorthethermistor(NTC)ineachcellindependently. 9.3.3.4.1 Cold/HotTemperatureWindow The bq24190, bq24192, bq24192I continuously monitors battery temperature by measuring the voltage between the TS pins and ground, typically determined by a negative temperature coefficient thermistor and an external voltage divider. The device compares this voltage against its internal thresholds to determine if charging is allowed.Toinitiateachargecycle,thebatterytemperaturemustbewithintheV toV thresholds.Duringthe LTF HTF charge cycle the battery temperature must be within the V to V thresholds, else the device suspends LTF TCO chargingandwaitsuntilthebatterytemperatureiswithintheV toV range. LTF HTF REGN bq2419x RT1 TS RTH RT2 103AT Figure15. TSResistorNetwork WhentheTSfaultoccurs,thefaultregisterREG09[2:0]indicatestheactualconditiononeachTSpinandanINT isassertedtothehost.TheSTATpinindicatesthefaultwhenchargingissuspended. TEMPERATURE RANGETO TEMPERATURE RANGE INITIATE CHARGE DURINGACHARGECYCLE VREF VREF CHARGE SUSPENDED CHARGE SUSPENDED V V LTF LTF VLTFH VLTFH CHARGE at full C CHARGE atfull C V HTF V TCO CHARGE SUSPENDED CHARGE SUSPENDED AGND AGND Figure16. TSPinThermistorSenseThresholds Assuming a 103AT NTC thermistor is used on the battery pack, the value RT1 and RT2 can be determined by usingthefollowingequations: 20 SubmitDocumentationFeedback Copyright©2012–2014,TexasInstrumentsIncorporated ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I www.ti.com SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 æ 1 1 ö VVREF´RTHCOLD´RTHHOT´çV - V ÷ RT2= è LTF TCO ø æV ö æV ö RTHHOT´ç VVREF -1÷-RTHCOLD´ç VVREF -1÷ è TCO ø è LTF ø V VREF -1 V RT1= LTF 1 1 + RT2 RTH COLD (2) Select0°Cto45°CrangeforLi-ionorLi-polymerbattery, RTH =27.28kΩ COLD RTH =4.911kΩ HOT RT1=5.52kΩ RT2=31.23kΩ 9.3.3.5 ChargingTermination The bq24190, bq24192, bq24192I terminates a charge cycle when the battery voltage is above recharge threshold, and the current is below termination current. After the charging cycle is complete, the BATFET turns off. The converter keeps running to power the system, and BATFET can turn back on to engage supplement mode. Whenterminationoccurs,thestatusregister REG08[5:4]is11,andanINTisassertedtothehost.Terminationis temporarily disabled if the charger device is in input current/voltage regulation or thermal regulation. Termination canbedisabledbywriting0toREG05[7]. 9.3.3.5.1 TerminationwhenREG02[0]=1 When REG02[0] is HIGH to reduce the charging current by 80%, the charging current could be less than the termination current. The charger device termination function should be disabled. When the battery is charged to fullycapacity,thehostdisableschargingthroughCEpinorREG01[5:4]. 9.3.3.5.2 TerminationwhenREG05[6]=1 Usually the STAT bit indicates charging complete when the charging current falls below termination threshold. Write REG05[6] = 1 to enable an early “charge done” indication on STAT pin. The STAT pin goes high when the charge current reduces below 800 mA. The charging cycle is still on-going until the current falls below the terminationthreshold. 9.3.3.6 ChargingSafetyTimer The bq24190, bq24192, bq24192I has safety timer to prevent extended charging cycle due to abnormal battery conditions. In default mode, the device keeps charging the battery with 5-hour fast charging safety timer regardless of REG05[2:1] default value. At the end of the 5 hours, the EN_HIZ (REG00[7]) is set to signal the buck converter stops and the system load is supplied by the battery. The EN_HIZ bit can be cleared to restart the buck converter. In host mode, the device keeps charging the battery until the fast charging safety timer expired. The duration of safety timer can be set by the REG05[2:1] bits (default = 8 hours). At the end of safety timer, the EN_HIZ (REG00[7])isclearedtosignalthebuckconvertercontinuestooperationtosupplysystemload. The safety timer is 1 hour when the battery is below BATLOWV threshold. The user can program fast charge safety timer through I2C (REG05[2:1]). When safety timer expires, the fault register REG09[5:4] goes 11 and an INTisassertedtothehost.ThesafetytimerfeaturecanbedisabledviaI2C(REG05[3]). Thefollowingactionsrestartthesafetytimer: • Atthebeginningofanewchargingcycle Copyright©2012–2014,TexasInstrumentsIncorporated SubmitDocumentationFeedback 21 ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 www.ti.com • ToggletheCEpinHIGHtoLOWtoHIGH(chargeenable) • WriteREG01[5:4]from00to01(chargeenable) • WriteREG05[3]from0to1(safetytimerenable) During input voltage/current regulation or thermal regulation, or when FORCE_20PCT (REG02[0]) bit is set, the safety timer counts at half clock rate since the actual charge current is likely to be below the register setting. For example, if the charger is in input current regulation (IINDPM) throughout the whole charging cycle, and the safety time is set to 5 hours, the safety timer will expire in 10 hours. This feature can be disabled by writing 0 to REG07[6]. It is recommended to disable safety timer first by clearing REG05[3] bit before safety timer configuration is changed.Thesafetytimershouldbere-enabledbysettingREG05[3]bit. 9.3.3.7 USBTimerwhenChargingfromUSB100mASource The total charging time in default mode from USB100-mA source is limited by a 45-min max timer. At the end of thetimer,thedevicestopstheconverterandgoestoHIZ. 9.3.4 StatusOutputs(PG,STAT,andINT) 9.3.4.1 PowerGoodIndicator(PG) Inbq24192,bq24192I,PGgoesLOWtoindicateagoodinputsourcewhen: 1. VBUSaboveUVLO 2. VBUSabovebattery(notinsleep) 3. VBUSbelowACOVthreshold 4. VBUSabove3.8Vwhen30-mAcurrentisapplied(notapoorsource) 9.3.4.2 ChargingStatusIndicator(STAT) The bq24190, bq24192, bq24192I indicates charging state on the open drain STAT pin. The STAT pin can drive LEDastheapplicationdiagramshows. Table6.STATPinState CHARGINGSTATE STAT Charginginprogress(includingrecharge) LOW Chargingcomplete HIGH Sleepmode,chargedisable HIGH Chargesuspend(Inputover-voltage,TSfault,timerfault,inputorsystemover- blinkingat1Hz(bq24190,bq24192) voltage) or10-kΩpulldown(bq24192I) When a fault occurs, instead of blinking, the STAT pin in bq24192I has a 10-kΩ pull-down resistor to ground. Whenthepull-upresistoris30kΩ,theSTATvoltageduringfaultis1/4ofthepull-uprail. 9.3.4.3 InterrupttoHost(INT) Insomeapplications,thehostdoesnotalwaysmonitorthechargeroperation.TheINTnotifiesthesystemonthe deviceoperation.Thefollowingeventswillgenerate256-usINTpulse. • USB/adaptersourceidentified(throughPSELorDPDMdetection,withOTGpin) • Goodinputsourcedetected – V -V > V VBUS BAT SLEEPZ – V > V VBUS ACOV – currentlimitaboveI BADSRC • Inputremoved • ChargeComplete • AnyFAULTeventinREG09 22 SubmitDocumentationFeedback Copyright©2012–2014,TexasInstrumentsIncorporated ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I www.ti.com SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 When a fault occurs, the charger device sends out INT and keeps the fault state in REG09 until the host reads the fault register. Before the host reads REG09 and all the faults are cleared, the charger device would not send any INT upon new faults. In order to read the current fault status, the host has to read REG09 two times consecutively. The 1st reads fault register status from the last read and the 2nd reads the current fault register status. 9.3.5 Protections 9.3.5.1 InputCurrentLimitonILIM For safe operation, the bq24190, bq24192, bq24192I has an additional hardware pin on ILIM to limit maximum inputcurrentonILIMpin.TheinputmaximumcurrentissetbyaresistorfromILIMpintogroundas: 1V I = ´530 INMAX R ILIM (3) The actual input current limit is the lower value between ILIM setting and register setting (REG00[2:0]). For example, if the register setting is 111 for 3 A, and ILIM has a 353-Ω resistor to ground for 1.5 A, the input current limitis1.5A.ILIMpincanbeusedtosettheinputcurrentlimitratherthantheregistersettings. The device regulates ILIM pin at 1 V. If ILIM voltage exceeds 1 V, the device enters input current regulation (RefertoDynamicPowerPathManagementsection). The voltage on the ILIM pin is proportional to the input current. The ILIM pin can be used to monitor the input currentperEquation4: V I = ILIM ´I IN 1V INMAX (4) For example, if the ILIM pin sets 2 A, and the ILIM voltage is 0.6 V, the actual input current is 1.2 A. If the ILIM pin is open, the input current is limited to zero since ILIM voltage floats above 1 V. If the ILIM pin is short, the inputcurrentlimitissetbytheregister. 9.3.5.2 ThermalRegulationandThermalShutdown The bq24190, bq24192, bq24192I monitors the internal junction temperature T to avoid overheat the chip and J limits the IC surface temperature. When the internal junction temperature exceeds the preset limit (REG06[1:0]), the device lowers down the charge current. The wide thermal regulation range from 60°C to 120°C allows the usertooptimizethesystemthermalperformance. During thermal regulation, the actual charging current is usually below the programmed battery charging current. Therefore, termination is disabled, the safety timer runs at half the clock rate, and the status register REG08[1] goeshigh. Additionally, the device has thermal shutdown to turn off the converter. The fault register REG09[5:4] is 10 and anINTisassertedtothehost. 9.3.5.3 VoltageandCurrentMonitoringinBuckMode The bq24190, bq24192, bq24192I closely monitor the input and system voltage, as well as HSFET and LSFET currentforsafebuckmodeoperation. 9.3.5.3.1 InputOver-Voltage(ACOV) The maximum input voltage for buck mode operation is 18 V. If VBUS voltage exceeds 18 V, the device stops switching immediately. During input over voltage (ACOV), the fault register REG09[5:4] will be set to 01. An INT isassertedtothehost. 9.3.5.3.2 SystemOver-VoltageProtection(SYSOVP) ThechargerdevicemonitorsthevoltageatSYS.Whensystemover-voltageisdetected,theconverterisstopped toprotectcomponentsconnectedtoSYSfromhighvoltagedamage. Copyright©2012–2014,TexasInstrumentsIncorporated SubmitDocumentationFeedback 23 ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 www.ti.com 9.3.5.4 VoltageandCurrentMonitoringinBoostMode The bq24190, bq24192, bq24192I closely monitors the VBUS voltage, as well as HSFET and LSFET current to ensuresafeboostmodeoperation. 9.3.5.4.1 VBUSOver-VoltageProtection The boost mode regulated output is 5 V. When an adapter plugs in during boost mode, the VBUS voltage will rise above regulation target. Once the VBUS voltage exceeds 5.3 V, the bq24190, bq24192, bq24192I stops switching and the device exits boost mode. The fault register REG09[6] is set high to indicate fault in boost operation.AnINTisassertedtothehost. 9.3.5.5 BatteryProtection 9.3.5.5.1 BatteryOver-CurrentProtection(BATOVP) The battery over-voltage limit is clamped at 4% above the battery regulation voltage. When battery over voltage occurs, the charger device immediately disables charge. The fault register REG09[5] goes high and an INT is assertedtothehost. 9.3.5.5.2 ChargingDuringBatteryShortProtection Ifthebatteryvoltagefallsbelow2V,thechargecurrentisreducedto100mAforbatterysafety. 9.3.5.5.3 SystemOver-CurrentProtection If the system is shorted or exceeds the over-current limit, the BATFET is latched off. DC source insertion on VBUSisrequiredtoresetthelatch-offconditionandturnonBATFET. 9.3.6 SerialInterface The bq24190, bq24192, bq24192I uses I2C compatible interface for flexible charging parameter programming and instantaneous device status reporting. I2C is a bi-directional 2-wire serial interface developed by Philips Semiconductor (now NXP Semiconductors). Only two bus lines are required: a serial data line (SDA) and a serial clock line (SCL). Devices can be considered as masters or slaves when performing data transfers. A master is the device which initiates a data transfer on the bus and generates the clock signals to permit that transfer. At thattime,anydeviceaddressedisconsideredaslave. The device operates as a slave device with address 6BH, receiving control inputs from the master device like micro controller or a digital signal processor. The I2C interface supports both standard mode (up to 100 kbits), andfastmode(upto400kbits). Both SDA and SCL are bi-directional lines, connecting to the positive supply voltage via a current source or pull- upresistor.Whenthebusisfree,bothlinesareHIGH.TheSDAandSCLpinsareopendrain. 9.3.6.1 DataValidity The data on the SDA line must be stable during the HIGH period of the clock. The HIGH or LOW state of the data line can only change when the clock signal on the SCL line is LOW. One clock pulse is generated for each databittransferred. 24 SubmitDocumentationFeedback Copyright©2012–2014,TexasInstrumentsIncorporated ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I www.ti.com SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 SDA SCL Data line stable; Change Data valid of data allowed Figure17. BitTransferontheI2CBus 9.3.6.2 STARTandSTOPConditions All transactions begin with a START (S) and can be terminated by a STOP (P). A HIGH to LOW transition on the SDA line while SCl is HIGH defines a START condition. A LOW to HIGH transition on the SDA line when the SCLisHIGHdefinesaSTOPcondition. START and STOP conditions are always generated by the master. The bus is considered busy after the START condition,andfreeaftertheSTOPcondition. SDA SDA SCL SCL START(S) STOP(P) Figure18. STARTandSTOPconditions 9.3.6.3 ByteFormat Every byte on the SDA line must be 8 bits long. The number of bytes to be transmitted per transfer is unrestricted. Each byte has to be followed by an Acknowledge bit. Data is transferred with the Most Significant Bit (MSB) first. If a slave cannot receive or transmit another complete byte of data until it has performed some other function, it can hold the clock line SCL low to force the master into a wait state (clock stretching). Data transferthencontinueswhentheslaveisreadyforanotherbyteofdataandreleasetheclocklineSCL. Acknowledgement Acknowledgement signal from slave signal from receiver MSB SDA SCL S or Sr 1 2 7 8 9 1 2 8 9 Por Sr STARTor ACK ACK STOPor Repeated Repeated START START Figure19. DataTransferontheI2CBus Copyright©2012–2014,TexasInstrumentsIncorporated SubmitDocumentationFeedback 25 ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 www.ti.com 9.3.6.4 Acknowledge(ACK)andNotAcknowledge(NACK) The acknowledge takes place after every byte. The acknowledge bit allows the receiver to signal the transmitter that the byte was successfully received and another byte may be sent. All clock pulses, including the acknowledge9thclockpulse,aregeneratedbythemaster. The transmitter releases the SDA line during the acknowledge clock pulse so the receiver can pull the SDA line LOWanditremainsstableLOWduringtheHIGHperiodofthisclockpulse. When SDA remains HIGH during the 9th clock pulse, this is the Not Acknowledge signal. The master can then generateeitheraSTOPtoabortthetransferorarepeatedSTARTtostartanewtransfer. 9.3.6.5 SlaveAddressandDataDirectionBit AftertheSTART,aslaveaddressissent.Thisaddressis7bitslongfollowedbytheeighthbitasadatadirection bit(bitR/W).Azeroindicatesatransmission(WRITE)andaoneindicatesarequestfordata(READ). SDA SCL S 1-7 8 9 1-7 8 9 1-7 8 9 P START ADDRESS R/W ACK DATA ACK DATA ACK STOP Figure20. CompleteDataTransfer 9.3.6.5.1 SingleReadandWrite 1 7 1 1 8 1 8 1 1 S SlaveAddress 0 ACK RegAddr ACK DataAddr ACK P Figure21. SingleWrite 1 7 1 1 8 1 1 7 1 1 S SlaveAddress 0 ACK RegAddr ACK S SlaveAddress 1 ACK 8 1 1 Data NCK P Figure22. SingleRead Iftheregisteraddressisnotdefined,thechargerICsendbackNACKandgobacktotheidlestate. 9.3.6.5.2 Multi-ReadandMulti-Write Thechargerdevicesupportsmulti-readandmulti-writeonREG00throughREG08. 1 7 1 1 8 1 S SlaveAddress 0 ACK RegAddr ACK 8 1 8 1 8 1 1 SlaveAddress ACK Data toAddr+1 ACK Data toAddr+1 ACK P Figure23. Multi-Write 26 SubmitDocumentationFeedback Copyright©2012–2014,TexasInstrumentsIncorporated ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I www.ti.com SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 1 7 1 1 8 1 1 7 1 1 S SlaveAddress 0 ACK RegAddr ACK S SlaveAddress 1 ACK 8 1 8 1 8 1 1 Data @Addr ACK Data @Addr+1 ACK Data @Addr+1 ACK P Figure24. Multi-Read The fault register REG09 locks the previous fault and only clears it after the register is read. For example, if Charge Safety Timer Expiration fault occurs but recovers later, the fault register REG09 reports the fault when it is read the first time, but returns to normal when it is read the second time. To verify real time fault, the fault register REG09 should be read twice to get the real condition. In addition, the fault register REG09 does not supportmulti-readormulti-write. 9.4 Device Functional Modes 9.4.1 HostModeandDefaultMode The bq24190, bq24192, bq24192I is a host controlled device, but it can operate in default mode without host management. In default mode, bq24190, bq24192, bq24192I can be used as an autonomous charger with no hostorwithhostinsleep. When the charger is in default mode, REG09[7] is HIGH. When the charger is in host mode, REG09[7] is LOW. After power-on-reset, the device starts in watchdog timer expiration state, or default mode. All the registers are in thedefaultsettings. Any write command to bq24190, bq24192, bq24192I transitions the device from default mode to host mode. All the device parameters can be programmed by the host. To keep the device in host mode, the host has to reset the watchdog timer by writing 1 twice to REG01[6] before the watchdog timer expires (REG05[5:4]), or disable watchdogtimerbysettingREG05[5:4]= 00. POR watchdog timer expired Reset registers I2C interface enabled Y Host Mode I2C Write? Start watchdog timer Host programs registers N Default Mode Reset watchdog timer Reset REG01 Y Reset registers bit[6]? N Y N I2C Write? Y N WatchdogTimer Expired? Figure25. WatchdogTimerFlowChart 9.4.1.1 PluginUSB100mASourcewithGoodBattery When the input source is detected as 100-mA USB host, and the battery voltage is above batgood threshold (V ),thechargerdeviceentersHIZstatetomeetthebatterychargingspecrequirement. BATGD Copyright©2012–2014,TexasInstrumentsIncorporated SubmitDocumentationFeedback 27 ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 www.ti.com Device Functional Modes (continued) If the charger device is in host mode, it will stay in HIZ state even after the USB100-mA source is removed, and the adapter plugs in. During the HIZ state, REG00[7] is set HIGH and the system load is supplied from battery. It is recommended that the processor host always checks if the charger IC is in HIZ state when it wakes up. The hostcanwriteREG00[7]to0toexitHIZstate. If the charger is in default mode, when the DC source is removed, the charger device will get out of HIZ state automatically. When the input source plugs in again, the charger IC runs detection on the input source and updatetheinputcurrentlimit. 9.4.1.2 USBTimerwhenChargingfromUSB100-mASource The total charging time in default mode from USB 100-mA source is limited by a 45-min max timer. At the end of thetimer,thedevicestopstheconverterandgoestoHIZ. 9.5 Register Map Table7.RegisterMap REGISTER REGISTERNAME RESET bq24190,bq24192:00110000,or30 REG00 InputSourceControlRegister bq24192I:00111000,or38 REG01 Power-OnConfigurationRegister 00011011,or1B bq24190,bq24192:01100000,or60 REG02 ChargeCurrentControlRegister bq24192I:00100000,or20 REG03 Pre-Charge/TerminationCurrentControlRegister 00010001,or11 bq24190,bq241192:10110010,orB2 REG04 ChargeVoltageControlRegister bq24192I:10011010,or9A REG05 ChargeTermination/TimerControlRegister 10011010,or9A REG06 IRCompensation/ThermalRegulationControlRegister 00000011,or03 REG07 MiscOperationControlRegister 01001011,or4B REG08 SystemStatusRegister — REG09 FaultRegister — REG0A Vender/Part/RevisionStatusRegister — 28 SubmitDocumentationFeedback Copyright©2012–2014,TexasInstrumentsIncorporated ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I www.ti.com SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 9.5.1 I2CRegisters Address:6BH.REG00-07supportReadandWrite.REG08-0Aarereadonly. 9.5.1.1 InputSourceControlRegisterREG00(bq24190,bq24192reset=00110000,or30;bq24192Ireset =00111000,or38) Figure26. REG00InputSourceControlRegisterFormat 7 6 5 4 3 2 1 0 EN_HIZ VINDPM[3] VINDPM[2] VINDPM[1] VINDPM[0] IINLIM[2] IINLIM[1] IINLIM[0] R/W R/W R/W R/W R/W R/W R/W R/W LEGEND:R/W=Read/Write;R=Readonly;-n=valueafterreset Table8.REG00 InputSourceControl RegisterDescription BIT FIELD TYPE RESET DESCRIPTION Bit7 EN_HIZ R/W 0 0–Disable,1–Enable Default:Disable(0) InputVoltageLimit Bit6 VINDPM[3] R/W 0 640mV Offset3.88V,Range:3.88Vto5.08V Default: Bit5 VINDPM[2] R/W 1 320mV bq24190/bq24192:4.36V(0110) Bit4 VINDPM[1] R/W 1 160mV bq24192i:4.44V(0111) Bit3 VINDPM[0] R/W 0: 80mV (bq24190/92) 1:(bq24192I) InputCurrentLimit(ActualinputcurrentlimitisthelowerofI2CandILIM) Bit2 IINLIM[2] R/W 0 000–100mA,001–150mA, DefaultSDP:100mA(000)(OTGpin=0)or500 010–500mA, mA(010) Bit1 IINLIM[1] R/W 0 011–900mA,100–1.2A, (OTGpin=1) Bit0 IINLIM[0] R/W 0 101–1.5A, DefaultDCP/CDP: 110–2A,111–3A bq24190/bq24192I:1.5A(101), bq24192:3A(111) Copyright©2012–2014,TexasInstrumentsIncorporated SubmitDocumentationFeedback 29 ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 www.ti.com 9.5.1.2 Power-OnConfigurationRegisterREG01(reset=00011011,or1B) Figure27. REG01Power-OnConfigurationRegisterFormat 7 6 5 4 3 2 1 0 RegisterReset I2CWatchdog CHG_CONFIG[1] CHG_CONFIG[0] SYS_MIN[2] SYS_MIN[1] SYS_MIN[0] BOOST_LIM TimerReset R/W R/W R/W R/W R/W R/W R/W R/W LEGEND:R/W=Read/Write;R=Readonly;-n=valueafterreset Table9.REG01Power-OnConfigurationRegisterDescription BIT FIELD TYPE RESET DESCRIPTION NOTE Bit7 RegisterReset R/W 0 0–Keepcurrentregistersetting, Default:Keepcurrentregistersetting(0) 1–Resettodefault Backto0afterregisterreset Bit6 I2CWatchdog R/W 0 0–Normal;1–Reset Default:Normal(0) TimerReset Backto0aftertimerreset ChargerConfiguration Bit5 CHG_CONFIG[1] R/W 0 00–ChargeDisable,01–Charge Default:ChargeBattery(01) Battery, Bit4 CHG_CONFIG[0] R/W 1 10/11–OTG MinimumSystemVoltageLimit Bit3 SYS_MIN[2] R/W 1 0.4V Offset:3.0V,Range3.0Vto3.7V Default:3.5V(101) Bit2 SYS_MIN[1] R/W 0 0.2V Bit1 SYS_MIN[0] R/W 1 0.1V BoostModeCurrentLimit Bit0 BOOST_LIM R/W 1 0–500mA,1–1.3A Default:1.3A(1) 30 SubmitDocumentationFeedback Copyright©2012–2014,TexasInstrumentsIncorporated ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I www.ti.com SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 9.5.1.3 ChargeCurrentControlRegisterREG02(bq24190,bq24192reset=01100000,or60;bq24192I reset=00100000,or20) Figure28. REG02ChargeCurrentControlRegisterFormat 7 6 5 4 3 2 1 0 ICHG[5] ICHG[4] ICHG[3] ICHG[2] ICHG[1] ICHG[0] Reserved FORCE_20PCT R/W R/W R/W R/W R/W R/W R/W R/W LEGEND:R/W=Read/Write;R=Readonly;-n=valueafterreset Table10.REG02 ChargeCurrentControl RegisterDescription BIT FIELD TYPE RESET DESCRIPTION NOTE FastChargeCurrentLimit Bit7 ICHG[5] R/W 0 2048mA Offset:512mA Range:512to4544mA Bit6 ICHG[4] R/W 0:(bq24192I) 1024mA 1:(bq24190/92) Default: bq24190,bq24192:2048mA(011000), Bit5 ICHG[3] R/W 1 512mA bq24192I:1024mA(001000) Bit4 ICHG[2] R/W 0 256mA Bit3 ICHG[1] R/W 0 128mA Bit2 ICHG[0] R/W 0 64mA Bit1 Reserved R/W 0 0-Reserved Reserved.Mustwrite"0" Bit0 FORCE_20PCT R/W 0 0-ICHGasREG02[7:2](FastCharge Default:ICHGasREG02[7:2](FastCharge CurrentLimit)andREG03[7:4](Pre- CurrentLimit)andREG03[7:4](Pre-Charge ChargeCurrentLimit)programmed CurrentLimit)programmed(0) 1-ICHGas20%ofREG02[7:2](Fast ChargeCurrentLimit)and50%of REG03[7:4](Pre-ChargeCurrentLimit) programmed 9.5.1.4 Pre-Charge/TerminationCurrentControlRegisterREG03(reset=00010001,or11) Figure29. REG03Pre-Charge/TerminationCurrentControlRegisterFormat 7 6 5 4 3 2 1 0 IPRECHG[3] IPRECHG[2] IPRECHG[1] IPRECHG[0] ITERM[3] ITERM[2] ITERM[1] ITERM[0] R/W R/W R/W R/W R/W R/W R/W R/W LEGEND:R/W=Read/Write;R=Readonly;-n=valueafterreset Table11.REG03Pre-Charge/TerminationCurrentControlRegisterDescription BIT FIELD TYPE RESET DESCRIPTION NOTE Pre-ChargeCurrentLimit Bit7 IPRECHG[3] R/W 0 1024mA Offset:128mA, Range: Bit6 IPRECHG[2] R/W 0 512mA bq24190,bq24192:128mAto2048mA Bit5 IPRECHG[1] R/W 0 256mA bq24192I:128mAto640mA(0100) Bit4 IPRECHG[0] R/W 1 128mA Default:256mA(0001) TerminationCurrentLimit Bit3 ITERM[3] R/W 0 1024mA Offset:128mA Range:128mAto2048mA Bit2 ITERM[2] R/W 0 512mA Default:256mA(0001) Bit1 ITERM[1] R/W 0 256mA Bit0 ITERM[0] R/W 1 128mA Copyright©2012–2014,TexasInstrumentsIncorporated SubmitDocumentationFeedback 31 ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 www.ti.com 9.5.1.5 ChargeVoltageControlRegisterREG04(bq24190,bq241192reset=10110010,orB2;bq24192I reset=10011010,or9A) Figure30. REG04ChargeVoltageControlRegisterFormat 7 6 5 4 3 2 1 0 VREG[5] VREG[4] VREG[3] VREG[2] VREG[1] VREG[0] BATLOWV VRECHG R/W R/W R/W R/W R/W R/W R/W R/W LEGEND:R/W=Read/Write;R=Readonly;-n=valueafterreset Table12.REG04 ChargeVoltageControl RegisterDescription BIT FIELD TYPE RESET DESCRIPTION NOTE ChargeVoltageLimit Bit7 VREG[5] R/W 1 512mV Offset:3.504V Range:3.504Vto4.400V(111000) Bit6 VREG[4] R/W 0 256mV Default: Bit5 VREG[3] R/W 0:(bq24192I) 128mV bq24190,bq24192:4.208V(101100) 1:(bq24190/92) bq24192I:4.112V(100110) Bit4 VREG[2] R/W 1 64mV Bit3 VREG[1] R/W 0:(bq24190/92) 32mV 1:(bq24192I) Bit2 VREG[0] R/W 0 16mV BatteryPrechargetoFastChargeThreshold Bit1 BATLOWV R/W 1 0–2.8V,1–3.0V Default:3.0V(1) BatteryRechargeThreshold(belowbatteryregulationvoltage) Bit0 VRECHG R/W 0 0–100mV,1–300mV Default:100mV(0) 9.5.1.6 ChargeTermination/TimerControlRegisterREG05(reset=10011010,or9A) Figure31. REG05ChargeTermination/TimerControlRegisterFormat 7 6 5 4 3 2 1 0 EN_TERM TERM_STAT WATCHDOG[1] WATCHDOG[0] EN_TIMER CHG_TIMER[1] CHG_TIMER[0] Reserved R/W R/W R/W R/W R/W R/W R/W R/W LEGEND:R/W=Read/Write;R=Readonly;-n=valueafterreset Table13.REG05ChargeTermination/TimerControlRegisterDescription BIT FIELD TYPE RESET DESCRIPTION NOTE ChargingTerminationEnable Bit7 EN_TERM R/W 1 0–Disable,1–Enable Default:Enabletermination(1) TerminationIndicatorThreshold Bit6 TERM_STAT R/W 0 0–MatchITERM, DefaultMatchITERM(0) 1–STATpinhighbeforeactual terminationwhenchargecurrent below800mA I2CWatchdogTimerSetting Bit5 WATCHDOG[1] R/W 0 00–Disabletimer,01–40s, Default:40s(01) 10–80s,11–160s Bit4 WATCHDOG[0] R/W 1 ChargingSafetyTimerEnable Bit3 EN_TIMER R/W 1 0–Disable,1–Enable Default:Enable(1) FastChargeTimerSetting Bit2 CHG_TIMER[1] R/W 0 00–5hrs,01–8hrs,10–12 Default:8hours(01) hrs,11–20hrs (SeeChargingSafetyTimerfordetails) Bit1 CHG_TIMER[0] R/W 1 Bit0 Reserved R/W 0 0-Reserved Reserved.Mustwrite"0" 32 SubmitDocumentationFeedback Copyright©2012–2014,TexasInstrumentsIncorporated ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I www.ti.com SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 9.5.1.7 IRCompensation/ThermalRegulationControlRegisterREG06(reset=00000011,or03) Figure32. REG06IRCompensation/ThermalRegulationControlRegisterFormat 7 6 5 4 3 2 1 0 BAT_COMP[2] BAT_COMP[1] BAT_COMP[0] VCLAMP[2] VCLAMP[1] VCLAMP[0] TREG[1] TREG[0] R/W R/W R/W R/W R/W R/W R/W R/W LEGEND:R/W=Read/Write;R=Readonly;-n=valueafterreset Table14.REG06IRCompensation/ThermalRegulationControlRegisterDescription BIT FIELD TYPE RESET DESCRIPTION NOTE IRCompensationResistorSetting Bit7 BAT_COMP[2] R/W 0 40mΩ Range:0to70mΩ Default:0Ω(000) Bit6 BAT_COMP[1] R/W 0 20mΩ Bit5 BAT_COMP[0] R/W 0 10mΩ IRCompensationVoltageClamp(aboveregulationvoltage) Bit4 VCLAMP[2] R/W 0 64mV Range:0to112mV Default:0mV(000) Bit3 VCLAMP[1] R/W 0 32mV Bit2 VCLAMP[0] R/W 0 16mV ThermalRegulationThreshold Bit1 TREG[1] R/W 1 00–60°C,01–80°C,10– Default:120°C(11) 100°C,11–120°C Bit0 TREG[0] R/W 1 9.5.1.8 MiscOperationControlRegisterREG07(reset=01001011,or4B) Figure33. REG07MiscOperationControlRegisterFormat 7 6 5 4 3 2 1 0 DPDM_EN TMR2X_EN BATFET_Disable Reserved Reserved Reserved INT_MASK[1] INT_MASK[0] R/W R/W R/W R/W R/W R/W R/W R/W LEGEND:R/W=Read/Write;R=Readonly;-n=valueafterreset Table15.REG07MiscOperationControlRegisterDescription BIT FIELD TYPE RESET DESCRIPTION NOTE ForceDPDMdetection(bq24190)orsetdefaultinputcurrentlimitfromPSEL/OTGpins(bq24192,bq24192I) Bit7 DPDM_EN R/W 0 0–NotinD+/D–detection; Default:NotinD+/D–detection(0), 1–ForceD+/D–detection Backto0afterdetectioncomplete SafetyTimerSettingduringInputDPMandThermalRegulation Bit6 TMR2X_EN R/W 1 0–Safetytimernotslowedby2Xduring Default:Safetytimerslowedby2X(1) inputDPMorthermalregulation, 1–Safetytimerslowedby2Xduring inputDPMorthermalregulation ForceBATFETOff Bit5 BATFET_Disable R/W 0 0–AllowQ4turnon,1–TurnoffQ4 Default:AllowQ4turnon(0) Bit4 Reserved R/W 0 0–Reserved Bit4 Reserved R/W 0 0–Reserved.Mustwrite"0" Bit3 Reserved R/W 1 1–Reserved.Mustwrite"1" Bit2 Reserved R/W 0 0–Reserved.Mustwrite"0" Bit1 INT_MASK[1] R/W 1 0–NoINTduringCHRG_FAULT,1– Default:INTonCHRG_FAULT(1) INTonCHRG_FAULT Bit0 INT_MASK[0] R/W 1 0–NoINTduringBAT_FAULT,1–INT Default:INTonBAT_FAULT(1) onBAT_FAULT Copyright©2012–2014,TexasInstrumentsIncorporated SubmitDocumentationFeedback 33 ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 www.ti.com 9.5.1.9 SystemStatusRegisterREG08 Figure34. REG08SystemStatusRegisterFormat 7 6 5 4 3 2 1 0 VBUS_STAT[1] VBUS_STAT[0] CHRG_STAT[1] CHRG_STAT[0] DPM_STAT PG_STAT THERM_STAT VSYS_STAT R R R R R R R R LEGEND:R=Readonly;-n=valueafterreset Table16.REG08SystemStatusRegisterDescription BIT FIELD TYPE DESCRIPTION Bit7 VBUS_STAT[1] R 00–Unknown(noinput,orDPDMdetectionincomplete),01–USBhost,10–Adapter port,11–OTG Bit6 VBUS_STAT[0] R Bit5 CHRG_STAT[1] R 00–NotCharging,01–Pre-charge(<V ),10–FastCharging,11–Charge BATLOWV TerminationDone Bit4 CHRG_STAT[0] R Bit3 DPM_STAT R 0–NotDPM,1–VINDPMorIINDPM Bit2 PG_STAT R 0–NotPowerGood,1–PowerGood Bit1 THERM_STAT R 0–Normal,1–InThermalRegulation Bit0 VSYS_STAT R 0–NotinVSYSMINregulation(BAT>VSYSMIN),1–InVSYSMINregulation(BAT< VSYSMIN) 9.5.1.10 FaultRegisterREG09 Figure35. REG09FaultRegisterFormat 7 6 5 4 3 2 1 0 WATCHDOG_ BOOST_ CHRG_FAULT[1] CHRG_FAULT[0] BAT_FAULT NTC_FAULT[2] NTC_FAULT[1] NTC_FAULT[0] FAULT FAULT R R R R R R R R LEGEND:R=Readonly;-n=valueafterreset Table17.REG09FaultRegisterDescription BIT FIELD TYPE DESCRIPTION Bit7 WATCHDOG_FAULT R 0–Normal,1-Watchdogtimerexpiration Bit6 BOOST_FAULT R 0–Normal,1–VBUSoverloaded(OCP),orVBUSOVPinboostmode Bit5 CHRG_FAULT[1] R 00–Normal,01–Inputfault(VBUSOVPorVBAT<VBUS<3.8V),10-Thermal shutdown, Bit4 CHRG_FAULT[0] R 11–ChargeSafetyTimerExpiration Bit3 BAT_FAULT R 0–Normal,1–BATOVP Bit2 NTC_FAULT[2] R 000–Normal,001–TS1Cold,010–TS1Hot,011–TS2Cold, 100–TS2Hot,101–BothCold,110–BothHot Bit1 NTC_FAULT[1] R Bit0 NTC_FAULT[0] R 34 SubmitDocumentationFeedback Copyright©2012–2014,TexasInstrumentsIncorporated ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I www.ti.com SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 9.5.1.11 Vender/Part/RevisionStatusRegisterREG0A (bq24190reset=00100011,or23;bq24192 reset=00101011,or2B;bq24192Ireset=00001011,or0B) Figure36. REG0AVender/Part/RevisionStatusRegisterFormat 7 6 5 4 3 2 1 0 Reserved Reserved PN[2] PN[1] PN[0] TS_PROFILE DEV_REG[0] DEV_REG[1] R R R R R R R R LEGEND:R=Readonly;-n=valueafterreset Table18.REG0AVender/Part/RevisionStatusRegisterDescription BIT FIELD TYPE RESET DESCRIPTION Bit7 Reserved R 0 0-Reserved Bit6 Reserved R 0 0-Reserved DeviceConfiguration Bit5 PN[2] R 0:(bq24192I) bq24190–100,bq24192–101,bq24192I–011 1:(bq24190/92) Bit4 PN[1] R 0 Bit3 PN[0] R 0:(bq24190) 1:(bq24192/92I) Bit2 TS_PROFILE R 0 0–Cold/Hotwindow Bit1 DEV_REG[0] R 1 11 Bit0 DEV_REG[1] R 1 Copyright©2012–2014,TexasInstrumentsIncorporated SubmitDocumentationFeedback 35 ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 www.ti.com 10 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validateandtesttheirdesignimplementationtoconfirmsystemfunctionality. 10.1 Application Information AtypicalapplicationconsistsofthedeviceconfiguredasanI2Ccontrolledpowerpathmanagementdeviceanda singlecellLi-IonbatterychargerforsinglecellLi-IonandLi-polymerbatteriesusedinawiderangeoftabletsand other portable devices. It integrates an input reverse-blocking FET (RBFET, Q1), high-side switching FET (HSFET, Q2), low-side switching FET (LSFET, Q3), and BATFET (Q4) between the system and battery. The devicealsointegratesabootstrapdiodeforthehigh-sidegatedrive. 10.2 Typical Application 5VUSBSDP/DCP bq24190 1μH SYS:3.5V-4.35V VBUS SW 1μF PMID 10μF 10μF 10μF 10μF 47nF 6.8μF BTST USB D+ REGN 4.7μF D– SYS PGND 2.2kW SYS VREF STAT BAT 10kW 10kW 10kW 353W 10μF (1.5Amax) SDA ILIM SCL Host REGN INT OTG 5.52kW CE TS1 TS2 31.23kW 10kW (103-AT) PowerPad Figure37. bq24190withD+/D-DetectionandUSBOn-The-Go(OTG) 36 SubmitDocumentationFeedback Copyright©2012–2014,TexasInstrumentsIncorporated ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I www.ti.com SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 Typical Application (continued) bq24192 2.2μH SYS:3.5V-4.35V 5VUSBor VBUS SW 5VAdapter 1μF PMID 47nF 10μF 10μF 6.8μF BTST REGN 4.7μF SYS PGND 2.2kW SYS VREF PG STAT BAT 10kW 10kW 10kW 177W 10μF (3Amax) SDA ILIM Host SCL REGN INT OTG 5.52kW CE TS1 TS2 31.23kW 10kW PHY PSEL (103-AT) PowerPad Figure38. bq24192withPSELandUSBOn-The-Go(OTG) bq24192I 2.2μH SYS:3.5V-4.35V 5VUSB VBUS SW 15VAdapter 1μF PMID 47nF 10μF 10μF 6.8μF BTST REGN 4.7μF SYS PGND 2.2kW SYS VREF PG STAT BAT 10kW 10kW 10kW 353W 10μF (1.5Amax) SDA ILIM Host SCL REGN INT OTG 10kW CE TS1 TS2 10kW PHY PSEL PowerPad Figure39. bq24192IwithPSEL,USBOn-The-Go(OTG),NoThermistorConnections Copyright©2012–2014,TexasInstrumentsIncorporated SubmitDocumentationFeedback 37 ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 www.ti.com Typical Application (continued) 10.2.1 DesignRequirements Table19.DesignRequirements DESIGNPARAMETER EXAMPLEVALUE Inputvoltage 3.9Vto17V Inputcurrentlimit 3000mA Fastchargecurrent 4000mA Boostmodeoutputcurrent 1.3A 10.2.2 DetailedDesignProcedure 10.2.2.1 InductorSelection The bq24190, bq24192, bq24192I has 1.5-MHz switching frequency to allow the use of small inductor and capacitor values. The Inductor saturation current should be higher than the charging current (I ) plus half the CHG ripplecurrent(I ): RIPPLE I ³ I + (1/2)I SAT CHG RIPPLE (5) The inductor ripple current depends on input voltage (VBUS), duty cycle (D = V /V ), switching frequency BAT VBUS (fs)andinductance(L): V ´D´(1-D) I = IN RIPPLE ¦s´L (6) The maximum inductor ripple current happens with D = 0.5 or close to 0.5. Usually inductor ripple is designed in the range of (20 to 40%) maximum charging current as a trade-off between inductor size and efficiency for a practicaldesign.Typicalinductorvalueis2.2 µH. 10.2.2.2 InputCapacitor Input capacitor should have enough ripple current rating to absorb input switching ripple current. The worst case RMS ripple current is half of the charging current when duty cycle is 0.5. If the converter does not operate at 50% duty cycle, then the worst case capacitor RMS current I occurs where the duty cycle is closest to 50% CIN andcanbeestimatedbythefollowingequation: I =I ´ D´(1-D) CIN CHG (7) For best performance, VBUS should be decouple to PGND with 1-μF capacitance. The remaining input capacitor shouldbeplaceonPMID. Low ESR ceramic capacitor such as X7R or X5R is preferred for input decoupling capacitor and should be placed to the drain of the high side MOSFET and source of the low side MOSFET as close as possible. Voltage rating of the capacitor must be higher than normal input voltage level. 25-V rating or higher capacitor is preferred for15-Vinputvoltage. 10.2.2.3 OutputCapacitor Output capacitor also should have enough ripple current rating to absorb output switching ripple current. The outputcapacitorRMScurrentI isgiven: COUT I I = RIPPLE »0.29´I COUT RIPPLE 2´ 3 (8) Theoutputcapacitorvoltageripplecanbecalculatedasfollows: V æ V ö DV = OUT ç1- OUT ÷ O 8LC¦s2 ç VIN ÷ è ø (9) At certain input/output voltage and switching frequency, the voltage ripple can be reduced by increasing the outputfilterLC. 38 SubmitDocumentationFeedback Copyright©2012–2014,TexasInstrumentsIncorporated ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I www.ti.com SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 The charger device has internal loop compensator. To get good loop stability, the resonant frequency of the output inductor and output capacitor should be designed between 15 kHz and 25 kHz. With 2.2-µH inductor, the typicaloutputcapacitorvalueis20µF.Thepreferredceramiccapacitoris6Vorhigherrating,X7RorX5R. 10.2.3 ApplicationPerformancePlots VBUS 5V/div VBUS 5V/div REGN 5V/div REGN 5V/div SYS 2V/div SYS 2V/div IIN /PG 200mA/div 2V/div 100ms/div 40ms/div VBAT3.2V VBAT3.2V Figure40.bq24190PowerUpfromUSB100mA Figure41.bq24192PowerUpwithChargeDisabled STAT 2V/div VBUS 5V/div /CE 5V/div REGN 5V/div SW 5V/div SYS 2V/div IBAT IBAT 2A/div 1A/div 100ms/div 400us/div VBUS5V Figure42.bq24192PowerUpwithChargeEnabled Figure43.ChargeEnable SYS STAT 3.4VOffset 2V/div 200mV/div /CE 5V/div IIN 2A/div SW 10V/div ISYS IBAT 2A/div 2A/div 4us/div 2ms/div VBUS12V VBUS5V,IIN3A,ChargeDisable Figure44.ChargeDisable Figure45.InputCurrentDPMResponsewithoutBattery Copyright©2012–2014,TexasInstrumentsIncorporated SubmitDocumentationFeedback 39 ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 www.ti.com SYS 3.4Voffset 200mV/div SW ISYS 5V/div 5A/div IIN 1A/div IL 1A/div IBAT 2A/div 0 2ms/div 400ns/div VBUS9V,IIN1.5A,VBAT3.8V VBUS12V,VBAT3.8V,ICHG3A Figure46.LoadTransientDuringSupplementMode Figure47.PWMSwitchingWaveform SYS 3.4Voffset 100mV/div SW 5V/div SW 5V/div IL 1A/div IL 1A/div 4us/div 400ns/div VBUS9V,NoBattery,ISYS10mA,ChargeDisable VBAT3.8V,ILOAD1A Figure48.PFMSwitchingWaveform Figure49.BoostModeSwitchingWaveform VBUS 5Voffset 200mV/div IBAT 500mA/div IVBUS 500mA/div 4ms/div VBAT3.8V Figure50.BoostModeLoadTransient 40 SubmitDocumentationFeedback Copyright©2012–2014,TexasInstrumentsIncorporated ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I www.ti.com SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 11 Power Supply Recommendations In order to provide an output voltage on SYS, the bq2419x require a power supply between 3.9 V and 17 V input with at least 100 mA current rating connected to VBUS; or, a single-cell Li-Ion battery with voltage > V BATUVLO connected to BAT. The source current rating needs to be at least 3 A in order for the buck converter of the chargertoprovidemaximumoutputpowertoSYS. 12 Layout 12.1 Layout Guidelines The switching node rise and fall times should be minimized for minimum switching loss. Proper layout of the components to minimize high frequency current path loop (see Figure 51) is important to prevent electrical and magnetic field radiation and high frequency resonant problems. Here is a PCB layout priority list for proper layout.LayoutPCBaccordingtothisspecificorderisessential. 1. Place input capacitor as close as possible to PMID pin and GND pin connections and use shortest copper traceconnectionorGNDplane. 2. Place inductor input terminal to SW pin as close as possible. Minimize the copper area of this trace to lower electrical and magnetic field radiation but make the trace wide enough to carry the charging current. Do not use multiple layers in parallel for this connection. Minimize parasitic capacitance from this area to any other traceorplane. 3. Put output capacitor near to the inductor and the IC. Ground connections need to be tied to the IC ground withashortcoppertraceconnectionorGNDplane. 4. Route analog ground separately from power ground. Connect analog ground and connect power ground separately. Connect analog ground and power ground together using power pad as the single ground connectionpoint.Orusinga0-Ω resistortotieanaloggroundtopowerground. 5. Use single ground connection to tie charger power ground to charger analog ground. Just beneath the IC. Usegroundcopperpourbutavoidpowerpinstoreduceinductiveandcapacitivenoisecoupling. 6. DecouplingcapacitorsshouldbeplacednexttotheICpinsandmaketraceconnectionasshortaspossible. 7. It is critical that the exposed power pad on the backside of the IC package be soldered to the PCB ground. Ensure that there are sufficient thermal vias directly under the IC, connecting to the ground plane on the otherlayers. 8. Theviasizeandnumbershouldbeenoughforagivencurrentpath. See the EVM design for the recommended component placement with trace and via locations. For the VQFN information,refertoSCBA017 andSLUA271. Figure51. HighFrequencyCurrentPath Copyright©2012–2014,TexasInstrumentsIncorporated SubmitDocumentationFeedback 41 ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 www.ti.com 12.2 Layout Example C C C REGN BTST PMID R BTST PGND PGND Top layer L S U CB PGND 2ndlayer(PGND) VBUS CSYS via PIN1 VSYS PGND PGND on PGND VBAT Top layer C BAT PGND PGND Figure52. LayoutExampleDiagram 42 SubmitDocumentationFeedback Copyright©2012–2014,TexasInstrumentsIncorporated ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I www.ti.com SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 13 Device and Documentation Support 13.1 Documentation Support 13.1.1 RelatedDocumentation bq2419xEVM(PWR021)User’sGuide(SLUUA14) QuadFlatpackNo-LeadLogicPackagesApplicationReport (SCBA017) QFN/SONPCBAttachmentApplicationReport (SLUA271) 13.2 Related Links The table below lists quick access links. Categories include technical documents, support and community resources,toolsandsoftware,andquickaccesstosampleorbuy. Table20.RelatedLinks TECHNICAL TOOLS& SUPPORT& PARTS PRODUCTFOLDER SAMPLE&BUY DOCUMENTS SOFTWARE COMMUNITY bq24190 Clickhere Clickhere Clickhere Clickhere Clickhere bq24192 Clickhere Clickhere Clickhere Clickhere Clickhere bq24192I Clickhere Clickhere Clickhere Clickhere Clickhere 13.3 Trademarks Alltrademarksarethepropertyoftheirrespectiveowners. 13.4 Electrostatic Discharge Caution Thesedeviceshavelimitedbuilt-inESDprotection.Theleadsshouldbeshortedtogetherorthedeviceplacedinconductivefoam duringstorageorhandlingtopreventelectrostaticdamagetotheMOSgates. 13.5 Glossary SLYZ022—TIGlossary. Thisglossarylistsandexplainsterms,acronyms,anddefinitions. Copyright©2012–2014,TexasInstrumentsIncorporated SubmitDocumentationFeedback 43 ProductFolderLinks:bq24190 bq24192 bq24192I

bq24190,bq24192,bq24192I SLUSAW5B–JANUARY2012–REVISEDDECEMBER2014 www.ti.com 14 Mechanical, Packaging, and Orderable Information The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of thisdocument.Forbrowser-basedversionsofthisdatasheet,refertotheleft-handnavigation. 44 SubmitDocumentationFeedback Copyright©2012–2014,TexasInstrumentsIncorporated ProductFolderLinks:bq24190 bq24192 bq24192I

PACKAGE OPTION ADDENDUM www.ti.com 15-Apr-2017 PACKAGING INFORMATION Orderable Device Status Package Type Package Pins Package Eco Plan Lead/Ball Finish MSL Peak Temp Op Temp (°C) Device Marking Samples (1) Drawing Qty (2) (6) (3) (4/5) BQ24190RGER ACTIVE VQFN RGE 24 3000 Green (RoHS CU NIPDAU Level-2-260C-1 YEAR -40 to 85 BQ24190 & no Sb/Br) BQ24190RGET ACTIVE VQFN RGE 24 250 Green (RoHS CU NIPDAU Level-2-260C-1 YEAR -40 to 85 BQ24190 & no Sb/Br) BQ24192IRGER ACTIVE VQFN RGE 24 3000 Green (RoHS CU NIPDAU Level-2-260C-1 YEAR -40 to 85 BQ & no Sb/Br) 24192I BQ24192IRGET ACTIVE VQFN RGE 24 250 Green (RoHS CU NIPDAU Level-2-260C-1 YEAR -40 to 85 BQ & no Sb/Br) 24192I BQ24192RGER ACTIVE VQFN RGE 24 3000 Green (RoHS CU NIPDAU Level-2-260C-1 YEAR -40 to 85 BQ24192 & no Sb/Br) BQ24192RGET ACTIVE VQFN RGE 24 250 Green (RoHS CU NIPDAU Level-2-260C-1 YEAR -40 to 85 BQ24192 & no Sb/Br) HPA01186RGER ACTIVE VQFN RGE 24 3000 Green (RoHS CU NIPDAU Level-2-260C-1 YEAR -40 to 85 BQ24190 & no Sb/Br) HPA02150RGER ACTIVE VQFN RGE 24 3000 Green (RoHS CU NIPDAU Level-2-260C-1 YEAR -40 to 85 BQ24190 & no Sb/Br) (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Addendum-Page 1

PACKAGE OPTION ADDENDUM www.ti.com 15-Apr-2017 (4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. (6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish value exceeds the maximum column width. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. Addendum-Page 2

PACKAGE MATERIALS INFORMATION www.ti.com 24-May-2019 TAPE AND REEL INFORMATION *Alldimensionsarenominal Device Package Package Pins SPQ Reel Reel A0 B0 K0 P1 W Pin1 Type Drawing Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant (mm) W1(mm) BQ24190RGER VQFN RGE 24 3000 330.0 12.4 4.25 4.25 1.15 8.0 12.0 Q2 BQ24190RGET VQFN RGE 24 250 180.0 12.4 4.25 4.25 1.15 8.0 12.0 Q2 BQ24192IRGER VQFN RGE 24 3000 330.0 12.4 4.25 4.25 1.15 8.0 12.0 Q2 BQ24192IRGET VQFN RGE 24 250 180.0 12.4 4.25 4.25 1.15 8.0 12.0 Q2 BQ24192RGER VQFN RGE 24 3000 330.0 12.4 4.25 4.25 1.15 8.0 12.0 Q2 BQ24192RGET VQFN RGE 24 250 180.0 12.4 4.25 4.25 1.15 8.0 12.0 Q2 PackMaterials-Page1

PACKAGE MATERIALS INFORMATION www.ti.com 24-May-2019 *Alldimensionsarenominal Device PackageType PackageDrawing Pins SPQ Length(mm) Width(mm) Height(mm) BQ24190RGER VQFN RGE 24 3000 367.0 367.0 35.0 BQ24190RGET VQFN RGE 24 250 210.0 185.0 35.0 BQ24192IRGER VQFN RGE 24 3000 367.0 367.0 35.0 BQ24192IRGET VQFN RGE 24 250 210.0 185.0 35.0 BQ24192RGER VQFN RGE 24 3000 367.0 367.0 35.0 BQ24192RGET VQFN RGE 24 250 210.0 185.0 35.0 PackMaterials-Page2

GENERIC PACKAGE VIEW RGE 24 VQFN - 1 mm max height PLASTIC QUAD FLATPACK - NO LEAD Images above are just a representation of the package family, actual package may vary. Refer to the product data sheet for package details. 4204104/H

PACKAGEOUTLINE RGE0024H VQFN- 1mmmaxheight PLASTICQUADFLATPACK-NOLEAD A 4.1 B 3.9 4.1 PIN1INDEXAREA 3.9 1MAX C SEATINGPLANE 0.05 0.00 0.08 C (cid:3)(cid:3)(cid:3)(cid:3)(cid:21)(cid:17)(cid:26)(cid:147)(cid:19)(cid:17)(cid:20) 2X2.5 (0.2)TYP 7 12 20X0.5 6 13 2X 25 SYMM 2.5 1 18 0.30 PIN1ID 24X 0.18 (OPTIONAL) 24 19 0.1 C A B SYMM 0.48 0.05 C 24X 0.28 4219016 A 082017 NOTES: 1. Alllineardimensionsareinmillimeters.Anydimensionsinparenthesisareforreferenceonly.Dimensioningandtolerancing perASMEY14.5M. 2. Thisdrawingissubjecttochangewithoutnotice. 3. Thepackagethermalpadmustbesolderedtotheprintedcircuitboardforthermalandmechanicalperformance. www.ti.com

EXAMPLEBOARDLAYOUT RGE0024H VQFN- 1mmmaxheight PLASTICQUADFLATPACK-NOLEAD (3.825) (2.7) 24 19 24X(0.58) 24X(0.24) 1 18 20X(0.5) 25 SYMM (3.825) 2X (cid:11)(cid:145)(cid:19)(cid:17)(cid:21)(cid:12)(cid:3)(cid:57)(cid:44)(cid:36) (1.1) TYP 6 13 (R0.05) 7 12 2X(1.1) SYMM LANDPATTERNEXAMPLE SCALE:20X 0.07MAX 0.07MIN ALLAROUND METAL ALLAROUND SOLDERMASK OPENING SOLDERMASK METALUNDER OPENING SOLDERMASK NONSOLDERMASK DEFINED SOLDERMASK (PREFERRED) DEFINED SOLDERMASKDETAILS 4219016 A 082017 NOTES:(continued) 4. Thispackageisdesignedtobesolderedtoathermalpadontheboard.Formoreinformation,seeTexasInstruments literaturenumber SLUA271(www.ti.comlitslua271) . 5. Soldermasktolerancesbetweenandaroundsignalpadscanvarybasedonboardfabricationsite. www.ti.com

EXAMPLESTENCILDESIGN RGE0024H VQFN- 1mmmaxheight PLASTICQUADFLATPACK-NOLEAD (3.825) 4X(1.188) 24 19 24X(0.58) 24X(0.24) 1 18 20X(0.5) SYMM (3.825) (0.694) TYP 6 13 (R0.05)TYP 25 METAL TYP 7 12 (0.694) TYP SYMM SOLDERPASTEEXAMPLE BASEDON0.125mmTHICKSTENCIL EXPOSEDPAD 78PRINTEDCOVERAGEBYAREA SCALE:20X 4219016 A 082017 NOTES:(continued) 6. Lasercuttingapertureswithtrapezoidalwallsandroundedcornersmayofferbetterpasterelease.IPC-7525mayhavealternate designrecommendations.. www.ti.com

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