Texas Instruments BQ29412 Handleiding
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GND
OUT
VDD
CD
VC4
VC1
VC3
1
2VC2
3
45
6
7
8
DCTPACKAGE
(TOPVIEW)
1
2
3
4
8
7
6
5
VC1
VC2
VC3
GND
OUT
VDD
CD
VC4
PWP
ACKAGE
(TOPVIEW)
bq29410,bq29411,bq29412
bq29413,bq29414
bq29415,bq29419
www.ti.com
SLUS669G–AUGUST2005–REVISEDAUGUST2008
VOLTAGEPROTECTIONFOR2-,3-,OR4-CELLLi-IonBATTERIES
(2
nd
-LEVELPROTECTION)
CheckforSamples:bq29410,bq29411,bq29412,bq29413,bq29414,bq29415,bq29419
1
FEATURESDESCRIPTION
Thebq2941xisasecondaryovervoltageprotection
•2-,3-,or4-CellSecondaryProtection
ICfor2-,3-,or4-celllithium-ionbatterypacksthat
•LowPowerConsumptionI
CC
<2µA
incorporatesahigh-accuracyprecisionovervoltage
[VCELL
(ALL)
<V
(PROTECT)
]
detectioncircuit.Itincludesaprogrammabledelay
•FixedHighAccuracyOvervoltageProtection
circuitforovervoltagedetectiontime.
Threshold
FUNCTION
–bq29410=4.35V
Eachcellinamultiple-cellpackiscomparedtoan
–bq29411=4.40V
internalreferencevoltage.Ifonecellreachesan
–bq29412=4.45V
overvoltagecondition,theprotectionsequence
–bq29413=4.50V
begins.Thebq2941xdevicestartschargingan
externalcapacitorthroughtheCDpin.WhentheCD
–bq29414=4.55V
pinvoltagereaches1.2V,theOUTpinchangesfrom
–bq29415=4.60V
alowleveltoahighlevel.
–bq29419=4.30V
•ProgrammableDelayTimeofDetection
•HighPowerSupplyRippleRejection
•StableDuringPulseChargeOperation
APPLICATIONS
•2
nd
-LevelOvervoltageProtectioninLi-Ion
BatteryPacksin:
–NotebookComputers
–PortableInstrumentation
–PortableEquipment
1
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof
TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
Copyright©2005–2008,TexasInstrumentsIncorporated
ProductsconformtospecificationsperthetermsoftheTexas
Instrumentsstandardwarranty.Productionprocessingdoesnot
necessarilyincludetestingofallparameters.
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | BQ29412 |
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