Datasheet

POWERMODES
bq27510-G1
www.ti.com .....................................................................................................................................................................................................SLUS927–APRIL2009
WhenPFC=1,thebq27505canindicatewhenbatterytemperaturehasfallenbeloworrisenabovepredefined
thresholdsSuspendLowTemporSuspendHighTemp,respectively.Inthismode,the[XCHG]bitissetto
indicatethiscondition.The[XCHG]bitisclearedoncethebatterytemperaturereturnstotherange[Charge
InhibitTempLow+TempHys,ChargeInhibitTempHigh–TempHys].
ThechargingshouldnotstartwhenthetemperatureisbelowtheChargeInhibitTempLoworabovetheCharge
InhibitTempHigh.Thechargingcancontinueifthechargingstartsinsidethewindow[ChargeInhibitTempLow,
ChargeInhibitTempHigh]untilthetemperatureiseitherbelowSuspendLowTemporabovetheSuspendLow
Temp.Therefore,thewindow[ChargeInhibitTempLow,ChargeInhibitTempHigh]mustbeinsidethewindow
of[SuspendLowTemp,SuspendHighTemp].
Thebq27510hasfourpowermodes:NORMAL,SLEEP,HIBERNATEandBATINSERTCHECK.InNORMAL
mode,thebq27510isfullypoweredandcanexecuteanyallowabletask.InSLEEPmodethefuelgaugeexists
inareduced-powerstate,periodicallytakingmeasurementsandperformingcalculations.InHIBERNATEmode,
thefuelgaugeisinaverylowpowerstate,butcanbewokenupbycommunication.Finally,theBATINSERT
CHECKmodeisapowered-up,butlow-powerhalted,state,wherethebq27510resideswhennobatteryis
insertedintothesystem.
TherelationshipbetweenthesemodesisshowninFigure2.
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