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BQ24070RHLRG4 Datasheet, PDF (11/31 Pages) Texas Instruments – SINGLE-CHIP LI-ION CHARGE AND SYSTEM POWER-PATH MANAGEMENT IC | |||
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www.ti.com
bq24070
bq24071
SLUS694F â MARCH 2006 â REVISED DECEMBER 2009
POR
Y es
No
Y es
Vcc > VI(BAT)
checked at all
No
times?
Y es
SLEEP MODE
Indicate SLEEP
MODE
V I(BAT) < V(LOWV) Yes
?
Reset and Start
t(PRECHG) timer
No
Reset all timers,
Start t (CHG) timer
Regulate Current
or V oltage
Indicate Chargeâ
InâProgress
No
Y es
t (CHG)
Expired?
No
Y es
V I(BAT) <V(LOWV)
?
No
I (TERM)
detection?
Y es
Y es
T urn off charge
Indicate DONE
No
Regulate
I O(PRECHG)
Indicate Chargeâ
InâProgress
V I(BAT) <V(LOWV)
Y es
t(PRECHG)
No
Expired?
Y es
Fault Condition
Indicate Fault
V I(BAT) > V(RCH)
?
No
Enable I(F AUL T)
current
No
V I(BAT) > V(RCH)
?
Y es
Disable I (F AUL T)
current
V I(BAT) < V(RCH)
?
Figure 4. Charge Control Operational Flow Chart
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