BQ2040_15 Datasheet, PDF (27/36 Pages) Texas Instruments – Gas Gauge IC With SMBus Interface

Not Recommended For New Designs
bq2040
Absolute Maximum Ratings
Symbol
VCC
All other pins
REF
Parameter
Relative to VSS
Relative to VSS
Relative to VSS
VSR
Relative to VSS
TOPR
Operating tempera-
ture
Minimum
-0.3
-0.3
-0.3
-0.3
0
Maximum
+7.0
+7.0
+8.5
+7.0
+70
Unit
Notes
V
V
V Current limited by R11 (see Figure 1)
Minimum 100Ω series resistor should
V be used to protect SR in case of a
shorted battery.
°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 (TA = TOPR; V = 3.0 to 5.5V)
Symbol
Parameter
Minimum Typical Maximum Unit
Notes
EVSB
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, VCC should be 1.5V greater than VSB.
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