Datasheet

VCC > SRN
No
IndicateSLEEP
SLEEP MODE
Yes
EnableVREFLDO &
ChipBias
Battery
present?
Yes
Initiatebattery
detectalgorithm
Indicatebattery
absent
No
Conditionsmet
forcharge?
No
IndicateNOT
CHARGING,
Suspendtimers
Yes
VFB< VLOWV
Yes
Start 30 minute
prechargetimer
IndicateCharge -
In-Progress
Regulate
prechargecurrent
VFB < VLOWV
Precharge
timerexpired?
Yes
No
Yes
IndicateFAULT
FAULT
EnableI
FAULT
VFB > VRECH
StartFastcharge
timer
IndicateCharge -
In-Progress
Regulate
fastchargecurrent
Fastcharge
TimerExpired ?
No Yes
VFB> VRECH
&
ICHG < ITERM
Yes
No
IndicateChargeIn
Progress
Turnoffcharge ,
EnableI
DISCHG
for1
second
VFB < VRECH No
IndicateDONE
ChargeComplete
Yes
IndicateBATTERY
ABSENT
BatteryRemoved
Yes
POR
See Enablingand
DisablingCharge Section
Conditionsmet
forcharge?
No
Yes
No
Conditionsmet
forcharge?
No
Yes
IndicateNOT
CHARGING
,
Suspendtimers
No
No
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