BQ24072 TI 锂电池 电源管理芯片

bq24072,bq24073bq24074,bq24075,bq24079 SLUS810E–SEPTEMBER2008–REVISED JULY2010 1.5A USB-FRIENDLY Li-Ion BATTERY CHARGER AND POWER-PATH MANAGEMENT ICCheck for Samples:bq24072,bq24073,bq24074,bq24075,bq24079FEATURESDESCRIPTION•Fully Compliant USB Charger–Selectable100mA and500mA Maximum The bq2407x series of devices are integrated Li-ionlinear chargers and system power path management Input Currentdevices targeted at space-limited portable –100mA Maximum Current Limit Ensuresapplications.The devices operate from either a USB Compliance to USB-IF Standardport or AC adapter and support charge currents up to –Input based Dynamic Power Management 1.5A.The input voltage range with input overvoltage (V IN-DPM)for Protection Against Poor USB protection supports unregulated adapters.The USB Sources input current limit accuracy and start up sequenceallow the bq2407x to meet USB-IF inrush current •28V Input Rating with Overvoltage Protectionspecification.Additionally,the input dynamic power •Integrated Dynamic Power Path Management management(VIN-DPM)prevents the charger from (DPPM)Function Simultaneously and crashing incorrectly configured USB sources.Independently Powers the System andThe bq2407x features dynamic power path Charges the Batterymanagement(DPPM)that powers the system while •Supports up to1.5A Charge Current with simultaneously and independently charging the Current Monitoring Output(ISET)battery.The DPPM circuit reduces the charge currentwhen the input current limit causes the system output •Programmable Input Current Limit up to1.5Ato fall to the DPPM threshold;thus,supplying the for Wall Adapterssystem load at all times while monitoring the charge •System Output Tracks Battery Voltagecurrent separately.This feature reduces the number (bq24072)of charge and discharge cycles on the battery,allows •Programmable Termination Current(bq24074)for proper charge termination and enables the systemto run with a defective or absent battery pack.•Battery Disconnect Function with SYSOFFInput(bq24075,bq24079)Typical Application Circuit •Programmable Pre-Charge and Fast-ChargeSafety Timers•Reverse Current,Short-Circuit and ThermalProtection•NTC Thermistor Input•Proprietary Start Up Sequence Limits InrushCurrent•Status Indication–Charging/Done,PowerGood•Small3mm×3mm16Lead QFN PackageAPPLICATIONS•Smart Phones•Portable Media Players•Portable Navigation Devices•Low-Power Handheld DevicesPlease be aware that an important notice concerning availability,standard warranty,and use in critical applications of TexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet.Copyright©2008–2010,Texas Instruments Incorporated Products conform to specifications per the terms of the Texasbq24072,bq24073bq24074,bq24075,bq24079SLUS810E–SEPTEMBER2008–REVISED This integrated circuit can be damaged by ESD.Texas Instruments recommends that all integrated circuits be handled with appropriate precautions.Failure to observe proper handling and installation procedures can cause damage.ESD damage can range from subtle performance degradation to complete device failure.Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.DESCRIPTION(CONTINUED)Additionally,the regulated system input enables instant system turn-on when plugged in even with a totally discharged battery.The power-path management architecture also permits the battery to supplement the system current requirements when the adapter cannot deliver the peak system currents,enabling the use of a smaller adapter.The battery is charged in three phases:conditioning,constant current,and constant voltage.In all charge phases,an internal control loop monitors the IC junction temperature and reduces the charge current if the internal temperature threshold is exceeded.The charger power stage and charge current sense functions are fully integrated.The charger function has high accuracy current and voltage regulation loops,charge status display,and charge termination.The input current limit and charge current are programmable using external resistors.ORDERING INFORMATIONPART NUMBER OPTIONALV OVP V BAT(REG)V OUT(REG)V DPPM MARKING(1)(2)FUNCTIONbq24072RGTR 6.6V 4.2V V BAT+225mV V O(REG)–100mV TD CKP bq24072RGTT 6.6V 4.2V V BAT+225mV V O(REG)–100mV TD CKP bq24073RGTR 6.6V 4.2V 4.4V V O(REG)–100mV TD CKQ bq24073RGTT 6.6V 4.2V 4.4V V O(REG)–100mV TD CKQ bq24074RGTR10.5V 4.2V 4.4V V O(REG)–100mV ITERM BZF bq24074RGTT10.5V 4.2V 4.4V V O(REG)–100mV ITERM BZF bq24075RGTR 6.6V 4.2V 5.5V 4.3V SYSOFF CDU bq24075RGTT 6.6V 4.2V 5.5V 4.3V SYSOFF CDU bq24079RGTR 6.6V 4.1V 5.5V 4.3V SYSOFF ODI bq24079RGTT 6.6V 4.1V 5.5V 4.3V SYSOFF ODI(1)The RGT package is available in the following options:R-taped and reeled in quantities of3,000devices per reel.T-taped and reeled in quantities of250devices per reel.(2)This product is RoHS compatible,including a lead concentration that does not exceed0.1%of total product weight,and is suitable foruse in specified lead-free soldering processes.In addition,this product uses package materials that do not contain halogens,including bromine(Br)or antimony(Sb)above0.1%of total product weight.2Submit Documentation Feedback Copyright©2008–2010,Texas Instruments Incorporatedbq24072,bq24073bq24074,bq24075,bq24079 SLUS810E–SEPTEMBER2008–REVISED JULY2010 ABSOLUTE MAXIMUM RATINGS(1)over the0°C to125°C operating free-air temperature range(unless otherwise noted)VALUE UNITIN(with respect to VSS)–0.3to28VBAT(with respect to VSS)–0.3to5VV I Input VoltageOUT,EN1,EN2,CE,TS,ISET,PGOOD,CHG,ILIM,TMR,ITERM,–0.3to7VSYSOFF,TD(with respect to VSS)I I Input Current IN 1.6AOUT5A Output CurrentI O BAT(Discharge mode)5A(Continuous)BAT(Charging mode) 1.5(2)A Output Sink Current CHG,PGOOD15mAT J Junction temperature–40to150°CT stg Storage temperature–65to150°C (1)Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device.These are stress ratingsonly,and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied.Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.All voltage values are with respect to the network ground terminal unless otherwise noted.(2)The IC operational charging life is reduced to20,000hours,when charging at1.5A and125°C.The thermal regulation feature reducescharge current if the IC’s junction temperature reaches125°C;thus without a good thermal design the maximum programmed charge current may not be reached.DISSIPATION RATINGSPOWER RATING PACKAGE(1)R q JA R q JCT A≤25°C T A=85°C RGT(2)39.47°C/W 2.4°C/W 2.3W225mW(1)For the most current package and ordering information,see the Package Option Addendum at the end of this document,or see the TIwebsite at .(2)This data is based on using the JEDEC High-K board and the exposed die pad is connected to a Cu pad on the board.The pad isconnected to the ground plane by a2x3via matrix.RECOMMENDED OPERATING CONDITIONSMIN MAX UNIT IN voltage range 4.3526VV I’72,’73,‘75,'79 4.35 6.4 IN operating voltage range V‘74 4.3510.2I IN Input current,IN pin 1.5AI OUT Current,OUT pin 4.5AI BAT Current,BAT pin(Discharging) 4.5AI CHG Current,BAT pin(Charging) 1.5(1)AT J Junction Temperature–40125°CR ILIM Maximum input current programming resistor11008000ΩR ISET Fast-charge current programming resistor(2)5903000ΩR ITERM Termination current programming resistor015kΩR TMR Timer programming resistor1872kΩ(1)The IC operational charging life is reduced to20,000hours,when charging at1.5A and125°C.The thermal regulation feature reducescharge current if the IC’s junction temperature reaches125°C;thus without a good thermal design the maximum programmed charge current may not be reached.(2)Use a1%tolerance resistor for R ISET to avoid issues with the R ISET short test when using the maximum charge current setting. Copyright©2008–2010,Texas Instruments Incorporated Submit Documentation Feedback3bq24072,bq24073bq24074,bq24075,bq24079SLUS810E–SEPTEMBER2008–REVISED ELECTRICAL CHARACTERISTICSOver junction temperature range(0°≤T J≤125°C)and the recommended supply voltage range(unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT INPUTUVLO Undervoltage lock-out V IN:0V→4V 3.2 3.3 3.4VV hys Hysteresis on UVLO V IN:4V→0V200300mVInput power detected when V IN>V BAT+V IN(DT)V IN(DT)Input power detection threshold5580130mVV BAT=3.6V,VIN:3.5V→4VV hys Hysteresis on V IN(DT)V BAT=3.6V,V IN:4V→3.5V20mVTime measured from V IN:0V→5V1m st DGL(PGOOD)Deglitch time,input power detected status 1.2msrise-time to PGOOD=LOV IN:5V→7V(’72,’73,’75,'79) 6.4 6.6 6.8V OVP Input overvoltage protection threshold VV IN:5V→11V(’74)10.210.510.8V IN:7V→5V(’72,’73,’75,'79)110V hys Hysteresis on OVP mVV IN:11V→5V(’74)175t DGL(OVP)Input overvoltage blanking time(OVP fault deglitch)50m sTime measured from V IN:11V→5V with1m st REC Input overvoltage recovery time 1.2msfall-time to PGOOD=LOILIM,ISET SHORT CIRCUIT DETECTION(CHECKED DURING STARTUP)I SC Current source V IN>UVLO and V IN>V BAT+V IN(DT) 1.3mAV SC V IN>UVLO and V IN>V BAT+V IN(DT)520mV QUIESCENT CURRENTCE=LO or HI,input power not detected,I BAT(PDWN)Sleep current into BAT pin 6.5m ANo load on OUT pin,T J=85°CEN1=HI,EN2=HI,V IN=6V,T J=85°C50I IN Standby current into IN pin m AEN1=HI,EN2=HI,V IN=10V,T J=85°C200CE=LO,V IN=6V,no load on OUT pin,I CC Active supply current,IN pin 1.5mAV BAT>V BAT(REG),(EN1,EN2)≠(HI,HI)POWER PATHV DO(IN-OUT)V IN–V OUT V IN=4.3V,I IN=1A,V BAT=4.2V300475mVV DO(BAT-OUT)V BAT–V OUT I OUT=1A,V IN=0V,V BAT>3V50100mVV IN>V OUT+V DO(IN-OUT),V BAT<3.2V 3.3 3.4 3.5OUT pin voltage regulation(bq24072)VBAT +V BAT+V BAT+V IN>V OUT+V DO(IN-OUT),V BAT≥3.2V150mV225mV270mVV O(REG)V OUT pin voltage regulation(bq24073,bq24074)V IN>V OUT+V DO(IN-OUT) 4.3 4.4 4.5OUT pin voltage regulation(bq24075,bq24079)V IN>V OUT+V DO(IN-OUT) 5.4 5.5 5.6EN1=LO,EN2=LO9095100mAI IN max Maximum input current EN1=HI,EN2=LO450475500EN2=HI,EN1=LO K ILIM/R ILIM AI LIM=500mA to1.5A150016101720K ILIM Maximum input current factor AΩI LIM=200mA to500mA133015251720I IN max Programmable input current limit range EN2=HI,EN1=LO,R ILIM=8kΩto1.1kΩ2001500mAInput voltage threshold when input current isV IN-DPM EN2=LO,EN1=X 4.35 4.5 4.63V reducedV O(REG)–V O(REG)–V O(REG)–(’72,’73,’74)V Output voltage threshold when charging current is180mV100mV30mVV DPPMreduced(’75,'79) 4.2 4.3 4.4VV OUT≤V BATV BSUP1Enter battery supplement mode V BAT=3.6V,R ILIM=1.5kΩ,R LOAD=10Ω→2ΩV–40mVV OUT≥V BSUP2Exit battery supplement mode V BAT=3.6V,R ILIM=1.5kΩ,R LOAD=2Ω→10ΩVV BAT–20mVV O(SC1)Output short-circuit detection threshold,power-on V IN>V UVLO and V IN>V BAT+V IN(DT)0.80.91VOutput short-circuit detection threshold,supplementV O(SC2)V IN>V UVLO and V IN>V BAT+V IN(DT)200250300mV mode V BAT–V OUT>V O(SC2)indicates short-circuitt DGL(SC2)Deglitch time,supplement mode short circuit250m st REC(SC2)Recovery time,supplement mode short circuit60ms4Submit Documentation Feedback Copyright©2008–2010,Texas Instruments Incorporatedbq24072,bq24073bq24074,bq24075,bq24079 SLUS810E–SEPTEMBER2008–REVISED JULY2010 ELECTRICAL CHARACTERISTICS(continued)Over junction temperature range(0°≤T J≤125°C)and the recommended supply voltage range(unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT BATTERY CHARGERI BAT Source current for BAT pin short-circuit detection V BAT=1.5V47.511mAV BAT(SC)BAT pin short-circuit detection threshold V BAT rising 1.6 1.82V('72,'73,'74,'75) 4.16 4.20 4.23V BAT(REG)Battery charge voltage V('79) 4.059 4.100 4.141V LOWV Pre-charge to fast-charge transition threshold V IN>V UVLO and V IN>V BAT+V IN(DT) 2.93 3.1Vt DGL1(LOWV)Deglitch time on pre-charge to fast-charge transition25mst DGL2(LOWV)Deglitch time on fast-charge to pre-charge transition25msV BAT(REG)>V BAT>V LOWV,V IN=5V CE=LO,Battery fast charge current range3001500mAEN1=LO,EN2=HII CHG CE=LO,EN1=LO,EN2=HI,Battery fast charge current V BAT>V LOWV,V IN=5V,I IN max>I CHG,no load on OUT pin,K ISET/R ISET Athermal loop and DPPM loop not activeK ISET Fast charge current factor797890975AΩI PRECHG Pre-charge current K PRECHG/R ISET AK PRECHG Pre-charge current factor7088106AΩCE=LO,(EN1,EN2)≠(LO,LO),0.09×I CHG0.1×I CHG0.11×I CHGV BAT>V RCH,t<t MAXCH,V IN=5V,DPPM loop and thermalloop not activeTermination comparator detection thresholdI TERM A(internally set)CE=LO,(EN1,EN2)=(LO,LO),0.027×I CHG0.033×I CHG0.040×I CHGV BAT>V RCH,t<t MAXCH,V IN=5V,DPPM loop and thermalloop not activeI BIAS(ITERM)Current for external termination-setting resistor V IN>V UVLO and V IN>V BAT+V IN(DT)727578m ATermination current threshold(externally set)I TERM K ITERM×R ITERM/R ISET A(bq24074)USB500or ISET mode(EN1,EN2)≠(LO,LO)0.02250.03000.0375CE=LO,V BAT>V RCH,t<t MAXCH,V IN=5V,DPPM loop andthermal loop not activeK Factor for termination detection thresholdK ITERM A (externally set)(bq24074)USB100mode(EN1,EN2)=(LO,LO),0.0080.01000.012CE=LO,V BAT>V RCH,t<t MAXCH,V IN=5V,DPPM loop andthermal loop not activet DGL(TERM)Deglitch time,termination detected25msV BAT(REG)V BAT(REG)V BAT(REG)V RCH Recharge detection threshold V IN>V UVLO and V IN>V BAT+V IN(DT)V–140mV–100mV–60mVt DGL(RCH)Deglitch time,recharge threshold detected62.5msV BAT=3.6V.Time measured fromt DGL(NO-IN)Delay time,input power loss to OUT LDO turn-off20msV IN:5V→3V1m s fall-timeI BAT(DET)Sink current for battery detection V BAT=2.5V57.510mAt DET Battery detection timer BAT high or low250ms BATTERY CHARGING TIMERSt PRECHG Pre-charge safety timer value TMR=floating144018002160st MAXCHG Charge safety timer value TMR=floating144001800021600st PRECHG Pre-charge safety timer value18kΩ<R TMR<72kΩR TMR×K TMR st MAXCHG Charge safety timer value18kΩ<R TMR<72kΩ10×R TMR×K TMR sK TMR Timer factor364860s/kΩBATTERY-PACK NTC MONITOR(1)I NTC NTC bias current V IN>UVLO and V IN>V BAT+V IN(DT)727578m AV HOT High temperature trip point Battery charging,V TS Falling270300330mVV HYS(HOT)Hysteresis on high trip point Battery charging,V TS Rising from V HOT30mVV COLD Low temperature trip point Battery charging,V TS Rising200021002200mVV HYS(COLD)Hysteresis on low trip point Battery charging,V TS Falling from V COLD300mVt DGL(TS)Deglitch time,pack temperature fault detection TS fault detected to charger disable50msV DIS(TS)TS function disable threshold(bq24072,bq24073)TS unconnected V IN-200mV V THERMAL REGULATIONT J(REG)Temperature regulation limit125°CT J(OFF)Thermal shutdown temperature T J Rising155°CT J(OFF-HYS)Thermal shutdown hysteresis20°C (1)These numbers set trip points of0°C and50°C while charging,with3°C hysteresis on the trip points,with a Vishay Type2curve NTCwith an R25of10kΩ.Copyright©2008–2010,Texas Instruments Incorporated Submit Documentation Feedback5E T RE T E R M R S OF F E T R bq24072,bq24073bq24074,bq24075,bq24079SLUS810E –SEPTEMBER 2008–REVISED JULY 2010ELECTRICAL CHARACTERISTICS (continued)Over junction temperature range (0°≤T J ≤125°C)and the recommended supply voltage range (unless otherwise noted)PARAMETERTEST CONDITIONSMINTYPMAXUNITLOGIC LEVELS ON EN1,EN2,CE,SYSOFF,TD V IL Logic LOW input voltage 00.4V V IH Logic HIGH input voltage 1.46V I IL Input sink current V IL =0V 1m A I IHInput source currentV IH =1.4V10m ALOGIC LEVELS ON PGOOD,CHG V OLOutput LOW voltageI SINK =5mA0.4VRGT PACKAGE (Top View)PIN FUNCTIONSPINNO.I/ODESCRIPTIONNAME'72,'73'74'75,'79External NTC Thermistor Input.Connect the TS input to the NTC thermistor in the battery pack.TS monitors TS 111I a 10k ΩNTC thermistor.For applications that do not utilize the TS function,connect a 10k Ωfixed resistor from TS to VSS to maintain a valid voltage level on TS.Charger Power Stage Output and Battery Voltage Sense Input.Connect BAT to the positive terminal of the BAT2,32,32,3I/Obattery.Bypass BAT to VSS with a 4.7m F to 47m F ceramic capacitor.Charge Enable Active-Low Input.Connect CE to a high logic level to place the battery charger in standby mode.In standby mode,OUT is active and battery supplement mode is still available.Connect CE to a low CE 444I logic level to enable the battery charger.CE is internally pulled down with ~285k Ω.Do not leave CE unconnected to ensure proper operation.EN2555I Input Current Limit Configuration e EN1and EN2control the maximum input current and enable USB compliance.See Table 2for the description of the operation states.EN1and EN2are internally pulled EN1666I down with ≉285k Ω.Do not leave EN1or EN2unconnected to ensure proper operation.Open-drain Power Good Status Indication Output.PGOOD pulls to VSS when a valid input source isPGOOD 777O detected.PGOOD is high-impedance when the input power is not within specified limits.Connect PGOOD to the desired logic voltage rail using a 1k Ω-100k Ωresistor,or use with an LED for visual indication.VSS 888–Ground.Connect to the thermal pad and to the ground rail of the circuit.Open-Drain Charging Status Indication Output.CHG pulls to VSS when the battery is charging.CHG is high CHG999Oimpedance when charging is complete and when charger is disabled.Connect CHG to the desired logic voltage rail using a 1k Ω-100k Ωresistor,or use with an LED for visual indication.System Supply Output.OUT provides a regulated output when the input is below the OVP threshold and above the regulation voltage.When the input is out of the operation range,OUT is connected to V BAT except OUT 10,1110,1110,11Owhen SYSOFF is high (bq24075and bq24079only).Connect OUT to the system load.Bypass OUT to VSS with a 4.7m F to 47m F ceramic capacitor.Adjustable Current Limit Programming Input.Connect a 1100Ωto 8k Ωresistor from ILIM to VSS to program ILIM 121212Ithe maximum input current (EN2=1,EN1=0).The input current includes the system load and the battery charge current.Leaving ILIM unconnected disables all charging.Input Power Connection.Connect IN to the external DC supply (AC adapter or USB port).The input operating range is 4.35V to 6.6V (bq24072,bq24073,bq24075,and bq24079)or 4.35V to 10.5V (bq23074).The input IN 131313Ican accept voltages up to 26V without damage but operation is suspended.Connect bypass capacitor 1m F to 10m F to VSS.6Submit Documentation FeedbackCopyright ©2008–2010,Texas Instruments Incorporatedbq24072,bq24073bq24074,bq24075,bq24079 SLUS810E–SEPTEMBER2008–REVISED JULY2010PIN FUNCTIONS(continued)PINNO.I/O DESCRIPTIONNAME'72,'73'74'75,'79Timer Programming Input.TMR controls the pre-charge and fast-charge safety timers.Connect TMR to VSS TMR141414I to disable all safety timers.Connect a18kΩto72kΩresistor between TMR and VSS to program the timersa desired length.Leave TMR unconnected to set the timers to the default values.Termination Disable Input.Connect TD high to disable charger termination.Connect TD to VSS to enablecharger termination.TD is checked during startup only and cannot be changed during operation.See the TD TD15––Isection in this datasheet for a description of the behavior when termination is disabled.TD is internally pulleddown to VSS with~285kΩ.Do not leave TD unconnected to ensure proper operation.Termination Current Programming Input.Connect a0Ωto15kΩresistor from ITERM to VSS to program the ITERM–15–I termination current.Leave ITERM unconnected to set the termination current to the default10%terminationthreshold.System Enable Input.Connect SYSOFF high to turn off the FET connecting the battery to the system output.When an adapter is connected,charging is also disabled.Connect SYSOFF low for normal operation. SYSOFF––15ISYSOFF is internally pulled up to V BAT through a large resistor(~5MΩ).Do not leave SYSOFF unconnectedto ensure proper operation.Fast Charge Current Programming Input.Connect a590Ωto3kΩresistor from ISET to VSS to program thefast charge current level.Charging is disabled if ISET is left unconnected.While charging,the voltage at ISET ISET161616I/Oreflects the actual charging current and can be used to monitor charge current.See the CHARGE CURRENTTRANSLATOR section for more details.There is an internal electrical connection between the exposed thermal pad and the VSS pin of the device. Thermal The thermal pad must be connected to the same potential as the VSS pin on the printed circuit board.Do not–Pad use the thermal pad as the primary ground input for the device.VSS pin must be connected to ground at alltimes.Table1.EN1/EN2SettingsEN2EN1Maximum input current into IN pinB100modeB500mode10Set by an external resistor from ILIM to VSS11Standby(USB suspend mode)Copyright©2008–2010,Texas Instruments Incorporated Submit Documentation Feedback7bq24072,bq24073bq24074,bq24075,bq24079SLUS810E–SEPTEMBER2008–REVISED SIMPLIFIED BLOCK DIAGRAM Array8Submit Documentation Feedback Copyright©2008–2010,Texas Instruments IncorporatedV500 mV/div5 V/divI V 5 V/divVV 500 mA/divV CHGI BAT2 V/divV BAT1A/div5 V/div2 V/div400ms/divA/div5 V/divII V 3.6 VBAT V 3.825 VOUT I OUT I BATV 3.8 VBAT500 mA/div500 mV/div1 ms/divV 4.4 V OUT 1A/divSupplement ModeI OUTI BAT200 mV/div400s/divm V 4.4 VOUT 500 mA/div500 mA/div5 V/div2 V/div400s/divm 500 mA/divV SYSOFFIBATV 4 VBAT V 5.5 VOUT V CEI BATV 3.6 VBAT V CHG500 mA/div1 V/div5 V/div5 V/div 10 V/div500 mV/div1A/div40s/divm V INI BATV 4.2 VBAT V 4.4 V OUT bq24072,bq24073bq24074,bq24075,bq24079SLUS810E –SEPTEMBER 2008–REVISED JULY 2010TYPICAL CHARACTERISTICSV IN =6V,EN1=1,EN2=0,bq24073application circuit,T A =25°C,unless otherwise noted.ADAPTER PLUG-IN BATTERY CONNECTEDBATTERY DETECTION BATTERY DETECTION R LOAD =10ΩBATTERY INSERTEDBATTERY REMOVEDFigure 1.Figure 2.Figure 3.ENTERING AND EXITING BATTERYENTERING AND EXITING BATTERYSUPPLEMENT MODE SUPPLEMENT MODE ENTERING AND EXITING DPPMMODER LOAD =25ΩTO 4.5ΩR LOAD =20ΩTO 4.5ΩR LOAD =20Ωto 9Ωbq24074bq24072Figure 4.Figure 5.Figure 6.SYSTEM ON/OFF WITH INPUTOVP FAULT CONNECTED V IN =6V to 15V V IN =6VCHARGER ON/OF USING CER LOAD =10Ωbq24075,bq24079Figure 7.Figure 8.Figure 9.Copyright ©2008–2010,Texas Instruments Incorporated Submit Documentation Feedback 9600400100Temperature -Co 3002005000120125130135140145I - m AB A T 5 V/div4 ms/divV I V V255075100T - Junction Temperature - °CJ D r o p o u t V o l t a g e - V -V I N O U T25T - Junction Temperature - °CJ D r o p o u t V o l t a g e - V -V B A TO U T2.53 3.544.5V - O u t p u t V o l t a g e - VO V - Battery Voltage - VBAT 0255075100125T - Junction Temperature - °CJ V - O u t p u t V o l t a g e - VO bq24072,bq24073bq24074,bq24075,bq24079SLUS810E –SEPTEMBER 2008–REVISED JULY 2010TYPICAL CHARACTERISTICS (continued)V IN =6V,EN1=1,EN2=0,bq24073application circuit,T A =25°C,unless otherwise noted.SYSTEM ON/OFF WITH INPUT NOTCONNECTED DROPOUT VOLTAGEV IN =0Vvsbq24075,bq24079THERMAL REGULATIONTEMPERATUREFigure 10.Figure 11.Figure 12.DROPOUT VOLTAGEbq24072bq24072vsOUTPUT REGULATION VOLTAGEOUTPUT REGULATION VOLTAGETEMPERATURE vsvsNO INPUT SUPPLYBATTERY VOLTAGETEMPERATUREFigure 13.Figure 14.Figure 15.10Submit Documentation Feedback Copyright ©2008–2010,Texas Instruments Incorporated255075100125T - Junction Temperature - °CJ V - O u t p u t V o l t a g e - VO4.304.334.354.384.404.434.45255075100125T - Junction Temperature - °CJ V - O u t p u t V o l t a g e - VO 4.1804.1854.1904.1954.2004.2054.21051015202530T - Junction Temperature - °CJ V - R e g u l a t i o n V o l t a g e - VB A T5678910V - Input Voltage - VI I - I n p u t C u r r e nt - m AL I M 0255075100125T - Junction Temperature - °CJ V - O u t p u t V o l t a g eT h r e s h o l d - VO V P 0255075100125T - Junction Temperature - °CJ V - O u t p u t V o l t a g e T h r e s h o l d - VO V P V IN =6V,EN1=1,EN2=0,bq24073application circuit,T A =25°C,unless otherwise noted.bq24073/74bq24075,bq24079OUTPUT REGULATION VOLTAGEOUTPUT REGULATION VOLTAGEBAT REGULATION VOLTAGEvsvsvsTEMPERATURETEMPERATURETEMPERATUREFigure 16.Figure 17.Figure 18.bq24072/73/75/79bq24074bq24074OVERVOLTAGE PROTECTIONOVERVOLTAGE PROTECTIONTHRESHOLDTHRESHOLDINPUT CURRENT LIMITvsvsvsTEMPERATURETEMPERATUREINPUT VOLTAGEFigure 19.Figure 20.Figure 21.33.23.43.6 3.844.2I - F a s t C h a r g e C u r r e n t -AB A T V - Battery Voltage - VBAT 33.23.4 3.6 3.844.2I - F a s t C h a r g e C u r r e n t -AB A T V - Battery Voltage - VBAT 959697989910010110210310410522.22.42.62.83I - P r e c h a r g e C u r r e n t -AB A T V - Battery Voltage - VBAT22.2 2.4 2.6 2.83I - P r e c h a r g e C u r r e n t -AB A T V - Battery Voltage - VBAT V IN =6V,EN1=1,EN2=0,bq24073application circuit,T A =25°C,unless otherwise noted.FASTCHARGE CURRENTFASTCHARGE CURRENTPRECHARGE CURRENTvsvsvsBATTERY VOLTAGEBATTERY VOLTAGEBATTERY VOLTAGEFigure 22.Figure 23.Figure 24.PRECHARGE CURRENTvsBATTERY VOLTAGEFigure 25.APPLICATION CIRCUITSV IN=UVLO to V OVP,I FASTCHG=800mA,I IN(MAX)=1.3A,Battery Temperature Charge Range=0°C to50°C,6.25 hour Fastcharge Safety Timering bq24072/bq24073in a Host Controlled Charger ApplicationV IN=UVLO to V OVP,I FASTCHG=800mA,I IN(MAX)= 1.3A,I TERM=110mA,Battery Temperature Charge Range=0°C to50°C,Safety Timers disableding bq24074in a Stand Alone Charger ApplicationV IN=UVLO to V OVP,I FASTCHG=800mA,I IN(MAX)=1.3A,Battery Temperature Charge Range=0°C to50°C, 6.25hour Fastcharge Safety Timering bq24075or bq24079to Disconnect the Battery from the System。