Datasheet

27
bq2040
Absolute Maximum Ratings
Symbol Parameter Minimum Maximum Unit Notes
V
CC
Relative to V
SS
-0.3 +7.0 V
All other pins Relative to V
SS
-0.3 +7.0 V
REF Relative to V
SS
-0.3 +8.5 V Current limited by R11 (see Figure 1)
V
SR
Relative to V
SS
-0.3 +7.0 V
Minimum 100
Ω
series resistor should
be used to protect SR in case of a
shorted battery.
T
OPR
Operating tempera
-
ture
0 +70 °C Commercial
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 Voltage Thresholds (T
A
=T
OPR
; V = 3.0 to 5.5V)
Symbol Parameter Minimum Typical Maximum Unit Notes
E
VSB
Battery voltage error relative to SB -50mV - 50mV V See note
Note: The accuracy of the voltage measurement may be improved by adjusting the battery voltage offset and
gain, stored in external EEPROM. For best operation, V
CC
should be 1.5V greater than V
SB
.