Filter
Top Products
www.ti.com
Contents
bq27500
bq27501
System-SideImpedanceTrack™FuelGauge
SLUS785–SEPTEMBER2007
Thesedeviceshavelimitedbuilt-inESDprotection.Theleadsshouldbeshortedtogetherorthedeviceplacedin
conductivefoamduringstorageorhandlingtopreventelectrostaticdamagetotheMOSgates.
1INTRODUCTION..........................................14.2DATAFLASHINTERFACE.........................16
1.1FEATURES...........................................14.3MANUFACTURERINFORMATIONBLOCKS......17
1.2APPLICATIONS......................................14.4ACCESSMODES...................................17
1.3DESCRIPTION.......................................14.5SEALING/UNSEALINGDATAFLASH..............17
2DEVICEINFORMATION.................................34.6DATAFLASHSUMMARY...........................18
2.1AVAILABLEOPTIONS...............................35FUNCTIONALDESCRIPTION........................20
2.2PINDIAGRAMS......................................35.1FUELGAUGING....................................20
2.3TERMINALFUNCTIONS.............................35.2IMPEDANCETRACK™VARIABLES...............21
3ELECTRICALSPECIFICATIONS......................45.3DETAILEDDESCRIPTIONOFDEDICATEDPINS.23
3.1ABSOLUTEMAXIMUMRATINGS...................45.4TEMPERATUREMEASUREMENT.................26
3.2RECOMMENDEDOPERATINGCONDITIONS......45.5OVERTEMPERATUREINDICATION...............26
5.6CHARGINGANDCHARGE-TERMINATION
3.3POWER-ONRESET..................................4
INDICATION.........................................26
3.4INTERNALTEMPERATURESENSOR
CHARACTERISTICS.................................55.7POWERMODES....................................27
3.5HIGHFREQUENCYOSCILLATOR..................55.8POWERCONTROL.................................29
3.6LOWFREQUENCYOSCILLATOR...................55.9AUTOCALIBRATION................................30
3.7INTEGRATINGADC(COULOMBCOUNTER)
6APPLICATION-SPECIFICINFORMATION..........31
CHARACTERISTICS.................................5
6.1BATTERYPROFILESTORAGEANDSELECTION31
3.8ADC(TEMPERATUREANDCELL
6.2APPLICATION-SPECIFICFLOWANDCONTROL.31
MEASUREMENT)CHARACTERISTICS.............5
7COMMUNICATIONS....................................33
3.9DATAFLASHMEMORYCHARACTERISTICS......6
7.1I
2
CINTERFACE.....................................33
3.10I
2
C-COMPATIBLEINTERFACECOMMUNICATION
8REFERENCESCHEMATICS..........................34
TIMINGCHARACTERISTICS........................6
8.1SCHEMATIC........................................34
4GENERALDESCRIPTION..............................8
4.1DATACOMMANDS..................................9
2ContentsSubmitDocumentationFeedback