BQ2012_15 Datasheet, PDF (16/26 Pages) Texas Instruments – Gas Gauge IC With Slow-Charge Control

Not Recommended For New Designs
bq2012
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 bq2012 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
VEDV1 First empty warning
Minimum
0.93
1.03
VSR1
Discharge compensation threshold
-120
VORD
VSRO
VSRQ
VSRD
VMCV
VBR
Overload threshold
SR sense range
Valid charge
Valid discharge
Maximum single-cell voltage
Battery removed/replaced
-230
-300
375
-
2.20
-
2.20
Typical
0.95
1.05
-150
-250
-
-
-
2.25
0.1
2.25
Maximum
0.97
1.07
-180
-280
+2000
-
-300
2.30
0.25
2.30
Unit
Notes
V SB
V SB
mV
SR, VSR + VOS (see
note 2)
mV SR, VSR + VOS
mV SR, VSR + VOS
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
guidelines should be followed for optimal performance. See “LayoutConsiderations.”
2. Proper threshold measurements require VCC to be more than 1.5V greater than the desired signal
value.
16