STBC21 Datasheet, PDF (11/54 Pages) STMicroelectronics – LI+ battery charger with thermal regulation

STBC21
Electrical characteristics
Table 6. Electrical characteristics (DC) (continued)
Symbol
Parameter
Conditions
Min.
Charging start threshold –
V_{CC_OK VCC undervoltage alarm (VCC_UVLO)}
V_{CC_ASD} V_CC-V_BAT threshold
V_{CC_OVP} V_CC overvoltage protection
IO_{DROP_QP} Quasi-pulse V_CC-V_BAT drop
V_{0V_HD} 0V-charge threshold
V_{PRE_CH}
Pre-charge to fast-charge voltage
threshold
±5%
I_BAT=100 mA, I_BAT=1.0A
±5%
V_CC = 5.0 V
ΔV_FLT Float voltage range tolerance
V_{FLT_OVP} Float voltage OVP
V_FLT = 4.2 V, I_BAT =1 mA
T_J = -10 °C to 85 °C
5.0 V < V_CC < 9.0 V
T_BAT = 0 °C to 60 °C
I_BAT = 1.0 mA
TIMER-3 = 60 min.
V_{CC_QP}
Quasi-pulse minimum supply voltage
in pre-charge phase
V_{BAT_QP}
Minimum battery voltage to start
quasi-pulse mode
V_RECH Battery recharge threshold voltage
NTC voltage threshold
V_{TEMP_UN for battery unconnected}
5.0 V < V_CC < 9.0 V
±2%
NTC voltage threshold
V_{TEMP_OT for battery overtemperature}
±2%
V_REF
Reference voltage for NTC /
LED drive voltage
±5%
R_DS-ON
T_RECH
T_FULL
Power MOS saturation resistance 0 °C < T_J < 85 °C
Battery recharge deglitching time
V_CC = 5.0 V
Full charge detection deglitching time V_CC = 5.0 V – TIMER-3
(after termination)
=0
T_HV
Battery overvoltage detection
deglitching time
V_CC = 5.0 V
T_Hl
Overcurrent detection deglitching
time
V_CC = 5.0 V
T_{HOLD_OFF}
Deglitching time on V_CC to start
charging (V_CC=3.0 V)
V_BAT = 2.8 V
T_{BAT_HOT} Battery hot detection deglitching time V_CC = 5.0 V
T_{BAT_CON}
Battery connection detection
deglitching time
V_CC = 5.0 V
T_{BAT_TLO}
Battery T_LO temperature detection
deglitching time
V_CC = 5.0 V
2.66
8.55
-0.7
4.21
Typ.
2.8
125
9.0
1
3.0
4.23
3.1
2.8
3.9
2.425
0.505
2.9
300
100
100
100
100
10
10
400
100
Max.
2.94
9.45
0.35
0.7
4.25
Unit
V
mV
V
V
V
V
%
V
V
V
V
V
V
V
mΩ
ms
ms
ms
ms
ms
ms
ms
ms
Doc ID 023256 Rev 1
11/54