BQ24013 Datasheet, PDF (10/21 Pages) Texas Instruments – SINGLE-CHIP, LI-ION CHARGE MANAGEMENT IC FOR HANDHELD APPLICATIONS (bq TINY)

bq24010, bq24012, bq24013, bq24014
SLUS530F − SEPTEMBER 2002 − REVISED AUGUST 2005
POR
SLEEP MODE
VCC > VI(BAT)
checked at
No
all times
Indicate SLEEP
MODE
Yes
VI(BAT) < V(LOWV)
Yes
Reset and Start
t(PRECHG) timer
No
Regulate
IO(PRECHG)
Indicate
Charge-in-Progress
Reset all timers
start t(CHG)
timers
Regulate Current
or Voltage
Indicate
Charge-in-Progress
No
TJ < t(SHTDWN)
Yes
Suspend charge
No
Indicate
Charge Suspend
Yes
VI(BAT) < V(LOWV)
Yes
t(PRECHG)
expired?
t(CHG)
expired?
No
TJ < t(SHTDWN)
No
Yes
Yes
Yes
VI(BAT) < V(LOWV)
Fault Condition
Indicate Fault
No
I(TERM)
detection
?
No
Yes
No
t(TAPER)
expired?
I(TAPER)
detection
?
Yes
No
Yes
Yes
Turn off charge
Indicate DONE
No
VI(BAT) > V(RCH)
?
No
Enable
I(FAULT)
current?
VI(BAT) > V(RCH)
?
Yes
Disable
I(FAULT)
current?
VI(BAT) < V(RCH)
?
Yes
Enter Battery
Absent
Detection
No
No
Figure 5. Operational Flow Chart
10
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