www.德州仪器.com
FEATURESAPPLICATIONS
描述
交流
USB BAT
输出
bq2403x
PACK+
PACK−
系统
VDC
地
VBUS
地
D+
d −
usb 端口
交流Adapter
+
Q1
Q2Q3
UDG−04082
40
m
Ω
(2)
bq24030,bq24032,
bq24032a,bq24035,bq24038
SLUS618D–AUGUST2004–REVISEDOCTOBER2005
单独的-chipchargeandsystempower-pathmanagementic(bqtiny™-iii)
•
SmartPhonesandPDA
•
small3,5mm×4,5mmqfnpackage
•
MP3Players
•
designedforsingle-cellli-ion-或者
•
DigitalCamerasHandheldDevices
li-polymer-basedportableapplications
•
InternetAppliances
•
integrateddynamicpower-pathmanagement
(dppm)featureallowingtheacadapteror
theUSBPorttoSimultaneouslyPowerthe
SystemandChargetheBattery
thebqtiny™-iiiseriesofdevicesarehighly
•
PowerSupplementModeAllowsBatteryto
integratedli-ionlinearchargersandsystem
电源-pathmanagementdevicestargetedat
SupplementtheUSBorACInputCurrent
空间-limitedportableapplications.thebqtiny-iii
•
autonomouspowersourceselection(交流
seriesofferintegratedusb-portanddcsupply(交流
adapterorusb)
adapter),电源-pathmanagementwithautonomous
•
IntegratedUSBChargeControlWith
电源-sourceselection,powerfetsandcurrent
selectable100-maand500-mamaximum
传感器,highaccuracycurrentandvoltage
InputCurrentRegulationLimits
规章制度,chargestatus,andchargetermination,在
asinglemonolithicdevice.
•
DynamicTotalCurrentManagement
forUSB
thebqtiny-iiipowersthesystemwhile
independentlychargingthebattery.thisfeature
•
supportsupto2-atotalcurrent
reducesthechargeanddischargecyclesonthe
•
3.3-vintegratedldooutput
电池,allowsforproperchargeterminationand
•
ThermalRegulationforChargeControl
allowsthesystemtorunwithanabsentordefective
batterypack.thisfeaturealsoallowsforthesystem
•
ChargeStatusOutputsforLEDorSystem
toinstantaneouslyturnonfromanexternalpower
InterfaceIndicatesChargeandFault
sourceinthecaseofadeeplydischargedbattery
情况
包装.theicdesignisfocusedonsupplying
•
reversecurrent,短的-电路,andthermal
continuouspowertothesystemwhenavailablefrom
保护
theac,usb,orbatterysources.
•
powergood(acadapterandusbport
呈现)statusoutputs
•
chargevoltageoptions:4.2vor4.36v
POWERFLOWDIAGRAM
(1)
(1)seefigure2andfunctionalblockdiagramformoredetailedfeatureinformation.
(2)p-fetbackgatebodydiodesaredisconnectedtopreventbodydiodeconduction.
pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
bqtinyisatrademarkoftexasinstruments.
UNLESSOTHERWISENOTEDthisdocumentcontains
copyright©2004–2005,texasinstrumentsincorporated
productiondatainformationcurrentasofpublicationdate.
ProductsconformtospecificationsperthetermsofTexas
instrumentsstandardwarranty.productionprocessingdoesnot
necessarilyincludetestingofallparameters.
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