BQ2014_15 Datasheet, PDF (16/27 Pages) Texas Instruments – Gas Gauge IC with External Charge Control

Not Recommended For New Designs
bq2014
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 R1 (see Figure 1)
Minimum 100Ω series resistor should
V
be used to protect SR in case of a
shorted battery (see the bq2014 appli-
cation note for details).
°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 6.5V)
Symbol
Parameter
VEDVF Final empty warning, default
VEDV1 First empty warning, default
VSR1
Discharge compensation threshold
VSRO
SR sense range
VOVLD Overload threshold
VSRQ
Valid charge
VSRD
Valid discharge
VMCV
Maximum single-cell voltage
VBR
Battery removed/replaced
Minimum
0.92
1.02
-120
-300
-220
375
-
2.20
-
2.20
Typical
0.95
1.05
-150
-
-250
-
-
2.25
0.1
2.25
Maximum
0.98
1.08
-180
2000
-280
-
-300
2.30
0.25
2.30
Unit
Notes
V SB
V SB
mV SR
mV SR
mV SR
µV VSR + VOS (see note 1)
µV VSR + VOS (see note 1)
V SB
V SB pulled low
V SB pulled high
Notes:
1. Default value; value set in DMF register. VOS is affected by PC board layout. Proper layout guide
lines should be followed for optimal performance.
2. To ensure correct threshold determination and proper operation, VCC > VSB + 1.5V
16