BQ2954 Datasheet, PDF (13/18 Pages) Texas Instruments – Lithium Ion Charge Management IC with Integrated Switching Controller

bq2954
Absolute Maximum Ratings
Symbol
Parameter
Minimum Maximum Unit
Notes
VCC
V_CC relative to V_SS
-0.3
+7.0
V
V_T
DC voltage applied on any pin ex-
cluding V_CC relative to V_SS
-0.3
+7.0
V
-20
T_OPR
Operating ambient temperature
-40
+70
°C Commercial
+85
°C Industrial “N”
TSTG
Storage temperature
-55
+125
°C
TSOLDER Soldering temperature
-
+260
°C 10s max.
Note:
Permanent device damage may occur if Absolute Maximum Ratings are exceeded. Functional opera-
tion should be limited to the Recommended DC Operating Conditions detailed in this data sheet. Expo-
sure to conditions beyond the operational limits for extended periods of time may affect device reliability.
DC Thresholds (TA = TOPR; VCC = 5V ±10%)
Symbol
Parameter
Rating
Unit Tolerance
Notes
V_REG
Internal reference voltage
Temperature coefficient
2.05
V
1% TA = 25°C
-0.5
mV/°C 10%
VLTF
VHTF
V_TCO
VHCO
TS maximum threshold
TS hysteresis threshold
TS minimum threshold
High cutoff voltage
0.6 _* VCC
V
0.44 _* V_CC
V
0.4 _* V_CC
V
VREG + 0.25V
V
± 0.03V Low-temperature fault
± 0.03V High-temperature fault
± 0.03V Temperature cutoff
± 0.03V
VMIN
Under-voltage threshold at BAT
V_RECHG Recharge voltage threshold at BAT
1.5
1.92
V
± 0.05V
V
± 0.05V
VLCO
Low cutoff voltage
0.8
V
± 0.03V
V_SNS
Current sense at SNS
0.250
0.025
V
10% IMAX
V
10% I_COND
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