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5
6
7
8
19
3
交流
USB
SW
VSS
STAT1
STAT2 13
12
ISET2
ISET1
bq25012RHL
PACK+
PACK−
VDC
地
VBUS
地
D+
d −
usb 端口
交流Adapter
15CE
2FB
16bat/输出
+
DSP
处理器
bluetooth chipset
电池
包装
1.8 v
17bat/输出
9
18
VSS
VSS
EN4 20FPWM
UDG−04070
R
设置
14PG
bq25010
bq25011
bq25012
SLUS615–DECEMBER2004
单独的-chipchargeranddc/dcconvertericforbluetoothheadsets
andotherportableapplications(bqhybrid™)
•
li-ionorli-polchargemanagementand
ThebqHYBRID™seriesarehighlyintegratedcharge
synchronousdc-dcpowerconversionina
andpowermanagementdevicestargetedat
SingleChip
空间-limitedbluetoothapplications.thebqhybrid
seriesofferintegratedpowerFETandcurrentsensor
•
OptimizedforPoweringBluetoothHeadsets
forchargecontrol,reverseblockingprotection,高
andAccessories
accuracycurrentandvoltageregulation,承担
•
ChargesandPowerstheSystemfromEither
状态,chargetermination,andahighlyefficientand
theACAdapterorUSBwithAutonomous
低-powerdc-dcconverterinasmallpackage.
PowerSourceSelection
thebqhybridchargesthebatteryinthreephases:
•
IntegratedUSBChargeControlwith
conditioning,constantcurrentandconstantvoltage.
Selectable100mAand500mAChargeRates
chargeisterminatedbasedonminimumcurrent.一个
•
IntegratedPowerFETandCurrentSensorfor
internalchargetimerprovidesabackupsafetyfeature
forchargetermination.thebqhybridautomatically
Upto500mAChargeApplicationsAND
re-startsthechargeifthebatteryvoltagefallsbelow
100ma1.8vdc-dccontrollerwith
aninternalthreshold.thebqhybridautomatically
IntegratedFET
enterssleepmodewhenV
CC
supplyisremoved.
•
ReverseLeakageProtectionPreventsBattery
theintegratedlow-powerhigh-efficiencydc-dccon-
Drainage
verterisdesignedtooperatedirectlyfroma
•
AutomaticPowerSaveModeForHigh
单独的-cellli-ionorli-polbatterypack.theoutput
efficiencyatlowcurrent,orforcedpwmfor
voltageiseitheradjustablefrom0.7vtovbat
FrequencySensitiveApplications
(bq25010),fixedat3.3v(bq25011),orfixedat1.8v
(bq25012),andiscapableofdeliveringupto150-毫安
ofloadcurrent.thedc-dcconverteroperatesata
synchronized1MHzswitchingfrequencyallowingfor
•
BluetoothHeadsets
theuseofsmallinductors.
•
BluetoothAccessories
•
低-powerhandhelddevices
TYPICALAPPLICATION
pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
bqhybridisatrademarkofbenchmark.
productiondatainformationiscurrentasofpublicationdate.
copyright©2004,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
necessarilyincludetestingofallparameters.
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