Datasheet

Operation description STNS01
18/29 DocID024654 Rev 2
Figure 18. Charging flowchart
AM12709v1
Start
End
t
PR E
timer
Expir ed ?
Pre-charge
V
BAT
<V
PRE
?
V
BAT
<V
PRE
OR t
FAST
timer
expired ?
V
BAT
<V
FLOAT
?
Fast-charge
CC
I
BAT
<I
END
?
Fast-charge
CV
Stop charger
Start alarm
YES
NO
YES
NO
YES
NO
YES
NO
NO
YES
Is Battery
Temperature
Good?
Stop charger,
Start alarm
Always active
During charge
Resume
charging,
Stop alarm
YES
NO
V
BAT
>V
OCHG
?
YES
Stop charger,
Start alarm
NO
End
Always active
During charge
Actions
Pre-charge:
starts t
PRE
timer,
starts ch arg ing in CC mode
at I
PRE
Fast-charge CC:
starts t
FAST
timer, increases charg e
currentto I
FAST
Fast-charge CV:
activates
the constant-voltagecontrol
loop
Start Alarm:
the CHG p in
starts toggling