BQ24100 Datasheet, PDF (10/26 Pages) Texas Instruments – SYNCHRONOUS SWITCHMODE, LI-ION AND LI-POL CHARGE MANAGEMENT IC WITH INTEGRATED POWERFETS

bq24100, bq24103
bq24105, bq24108
bq24113, bq24115
SLUS606C – JUNE 2004 – REVISED SEPTEMBER 2005
APPLICATION INFORMATION
POR
www.ti.com
Battery
Detect?
Yes
TS Pin
in LTF to HTF
Range?
Check for Battery
Presence
No
Indicate BATTERY
ABSENT
Suspend Charge
No
Indicate CHARGE
SUSPEND
Yes
V_BAT<V_LOWV
Yes
Reset and Start
T30min timer
Regulate
I_PRECHG
Indicate Charge-
In-Progress
No
Reset and Start
FSTCHG timer
Regulate
Current or Voltage
Indicate Charge-
In-Progress
TS Pin
in LTF to TCO
No
Range?
Yes
FSTCHG Timer
Expired?
TS pin
in LTF to TCO
range?
Yes
No
Suspend Charge
Indicate CHARGE
SUSPEND
No
TS pin
in LTF to HTF
range?
V_BAT<V_LOWV
Yes
T30min
Expired?
Suspend Charge
No
Indicate CHARGE
SUSPEND
No
TS pin
in LTF to HTF
range?
Yes
No
No
Yes
Yes
V_BAT<V_LOWV
Yes
No
No
I_TERM detection?
*NOTE: If the TTC pin is
pulled low, the safety timer
and termination are
disabled; the charger
continues to regulate, and
the STAT pins indicate
charge in progress.
If the TTC pin is pulled high
(VTSB), only the safety
timer is disabled
(termination is normal).
Yes
- Turn Off Charge
- Enable I_DISCHG for
t_DISCHG2
Indicate Charge-
In-Progress
V_BAT < V_RCH?
Charge Complete
No
Indicate DONE
*
Battery Removed
Yes
Indicate BATTERY
ABSENT
Yes
- Fault Condition
- Enable I_DETECT
Indicate Fault
Battery
Replaced?
(Vbat < Vrch?)
No
Yes
Figure 4. Stand-Alone Version Operational Flow Chart
10