Datasheet

Start
BATT_DETECT
Start 25mstimer
TimerExpired?
IsVOUT<VREG-100mV?
BatteryPresent
TurnoffSinkCurrent
Returntoflow
SetOUT REG
toVREG-400mV
Enablesinkcurrent
Reset & Start 25mstimer
No
Yes
TimerExpired?
No
Yes
IsVOUT>VREG-300mV?
BatteryPresent
TurnoffSinkCurrent
Returntoflow
Yes
No
Yes
No
Battery Absent
Don’tSignalCharge
TurnoffSinkCurrent
ReturntoFlow
bq24050
bq24052
bq24055
SLUS940B –SEPTEMBER 2009–REVISED JUNE 2012 www.ti.com
Figure 28. Battery Detect Flow Diagram
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