STBC21 Datasheet, PDF (19/54 Pages) STMicroelectronics – LI+ battery charger with thermal regulation

STBC21
Figure 7. V-I characteristics
CV- 1/2/3/4
4. 20 V + 0.03V / - 0.03
Battery voltage (V)
CV- 1/2/3/4
4. 10 V + 0.03V / - 0.03
CV- 1/2/3/4
4.05V + 0.03V / - 0.03
3V
Detailed description
CV- 1/2/3/4
4. 20 V + 0.03V / - 0.06
CV- 1/2/3/4
4. 10 V + 0.03V / - 0.06
CV- 1/2/3/4
4.05V + 0.03V / - 0.06
AM10418v 1
IS E T1
(Pr e --char ge cur r ent value)
IS E T2
(Fast - ch- ar ge cur r ent value)
Charging
current ( mA )
Figure 8. Battery temperature alarm after charging starts (at battery insertion and
at recharge) flowchart
BaƩery Temperature
Alarm DetecƟon / AŌer
charging starts
BaƩery Temperature
Alarm occurrence
YES
BaƩery Temperature
> 45°C
NO
YES
BaƩery Temperature
< 0°C
NO
Charge on going
LED SET
Start charging
Charging doesn’t start
BaƩery Temp Alarm /
AŌer charging starts
LED SET
NO
0°C < BaƩery Temperature < 43°C
YES
Charge on going
LED SET
Start charging
AM10419v 1
Doc ID 023256 Rev 1
19/54