Datasheet

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Vcc > V
I(BAT)
checked at all times
V
I(BAT)
<V
(LOWV)
Yes
No
t
(PRECHG)
Expired?
No
Yes
Indicate Fault
Yes
No
Yes
t
(CHG)
Expired?
No
Indicate Charge−
In−Progress
Regulate
I
O(PRECHG)
Indicate Charge−
In−Progress
Regulate Current
or Voltage
No
Reset and Start
t
(PRECHG)
timer
POR
Yes
Reset all timers,
Start t
(CHG)
timer
I
(TERM)
detection?
No
Yes
V
I(BAT)
< V
(RCH)
?
No
V
I(BAT)
<V
(LOWV)
No
Fault Condition
Yes
Yes
Indicate DONE
Turn off charge
Indicate SLEEP
MODE
SLEEP MODE
V
I(BAT)
<V
(LOWV)
Tj < T
(SHTDWN)
Tj < T
(SHTDWN)
Suspend charge
No
No
Yes
Indicate CHARGE
SUSPEND
I
(TAPER)
detection?
t
(TAPER)
Expired?
No
No
Yes
Yes
No
V
I(BAT)
> V
(RCH)
?
Enable I
(FAULT)
current
V
I(BAT)
> V
(RCH)
?
No
Yes
Yes
Disable I
(FAULT)
current
Yes
bq25015
bq25017
SLUS721A – DECEMBER 2006 – REVISED MARCH 2007
FUNCTIONAL DESCRIPTIONS (continued)
Figure 14. Operational Flow Chart
11
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