BQ24030_07 Datasheet, PDF (12/38 Pages) Texas Instruments – SINGLE-CHIP CHARGE AND SYSTEM POWER-PATH MANAGEMENT IC (bqTINY)

bq24030, bq24031, bq24032A
bq24035, bq24038
SLUS618F – AUGUST 2004 – REVISED NOVEMBER 2006
FUNCTIONAL DESCRIPTIONS (continued)
POR
Yes
No
Yes
Vcc > V _I(OUT)
checked at all
No
times?
Yes
SLEEP MODE
Indicate SLEEP
MODE
VI(BAT) < V(LOWV) _Yes
?
Reset and Start
t(PRECHG)timer
No
Reset all timers,
Start t _(CHG) timer
Regulate Current
or Voltage
Indicate Charge−
In−Progress
No
Regulate
IO(PRECHG)
Indicate Charge−
In−Progress
VI(OUT) <V(LOWV)
Yes
t _(CHG)
Expired?
No
Yes
VI(OUT) <V(LOWV)
?
Yes
t(PRECHG)
No
Expired?
Yes
Fault Condition
Indicate Fault
No
I(TERM)
detection?
Yes
Yes
Turn off charge
Indicate DONE
No
VI(OUT)> V(RCH)
?
No
Enable I(FAULT)
current
No
VI(OUT)> V _(RCH)
?
Yes
Disable I(FAULT)
current
V _I(OUT)< V(RCH)
?
Figure 3. Charge Control Operational Flow Chart
12
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