Datasheet

V
AUXPWR
<V
SHORT
?
Yes
No
32-Minute
TimerExpired?
No
EnableI
SHORT
IndicateCharge-In-
Progress
Regulate
InputCurrent, Charge
CurrentorVoltage
HighImpedanceModeorHost
ControlledOperationMode
TerminationEnabled
I
TERM
detected
andV
AUXPWR
>V
OREG
-V
RCH
?
Yes
V
AUXPWR
< V
OREG
-
V
RCH
?
V
AUXPWR
<V
SHORT
?
No
No
Yes
Yes
Yes
/CE=HIGH
TurnOffCharge
IndicateFault
IndicateShort
Circuitcondition
32-Minute
Timer Expired?
No
Yes
Yes
IndicateDONE
ChargeComplete
V
BUS
<V
IN(MIN)
?
Yes
No
IndicatePower
notGood
DisableCharge
WaitMode
Delay T
INT
V
BUS
<V
IN(MIN)
?
No
Yes
V
AUXPWR
< V
OREG
-
V
RCH
?
EnableI
DETECT
for
t
DETECT
TurnOffCharge
No
No
ResetCharge
Parameters
BatteryRemoved
WaitMode
Delay T
INT
Yes
V
AUXPWR
<V
LOWV
and bq24155?
PowerUp
V
BUS
>V
UVLO
No
Yes
Any Charge State/CE=HIGH
ChargeConfigure
Mode
DisableCharge
/CE=LOW
32-Minute Timer
Active?
No
Yes
HighImpedance
Mode
ChargeComplete
ResetandStart
32-Minute Timer
POR
LoadI
2
CRegisters
withDefaultValue
bq24155
SLUS942 –FEBRUARY 2010 www.ti.com
OPERATIONAL FLOW CHART
Figure 12. Operational Flow Chart of bq24155 in Charge Mode
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Product Folder Link(s): bq24155