Datasheet

www.ti.com
Vcc>V
I(OUT)
checkedatalltimes
V
I(OUT)
<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(OUT)
<V
(RCH)
?
No
V
I(OUT)
<V
(LOWV)
No
FaultCondition
Yes
Yes
IndicateDONE
Turnoffcharge
IndicateSLEEP
MODE
SLEEP MODE
V
I(OUT)
<V
(LOWV)
I
(TAPER)
detection?
t
(TAPER)
Expired?
No
No
Yes
Yes
No
Yes
V
I(OUT)
>V
(RCH)
?
EnableI
(FAULT)
current
V
I(OUT)
>V
(RCH)
?
No
Yes
Yes
DisableI
(FAULT)
current
(1)
t
(TAPER)
doesnotapplytobq24026/7
(1)
bq24020 , , bq24022 , , bq24023
bq24024 , bq24025 , bq24026
bq24027
SLUS549E – DECEMBER 2002 – REVISED NOVEMBER 2007
Figure 4. Operational Flow Chart
Copyright © 2002 – 2007, Texas Instruments Incorporated Submit Documentation Feedback 11
Product Folder Link(s): bq24020 bq24022 bq24023 bq24024 bq24025 bq24026 bq24027