BQ2050_15 Datasheet, PDF (16/27 Pages) Texas Instruments – Lithium Ion Power Gauge™ IC

Not Recommended For New Designs
bq2050
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 bq2050 appli-
cation note for details).
°C Commercial
Note:
Permanent device damage may occur if Absolute Maximum Ratings are exceeded. Functional operation
should be limited to the Recommended DC Operating Conditions detailed in this data sheet. Exposure to con-
ditions 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
Minimum Typical Maximum Unit
Notes
VEDVF
VEDV1
VSRO
VSRQ
VSRD
VMCV
Final empty warning
First empty warning
SR sense range
Valid charge
Valid discharge
Maximum single-cell voltage
1.44
1.49
-300
210
-
2.20
1.47
1.52
-
-
-
2.25
1.50
1.55
2000
-
-200
2.30
V SB
V SB
mV SR, VSR + VOS
µV VSR + VOS (see note)
µV VSR + VOS (see note)
V SB
Note:
VOS is affected by PC board layout. Proper layout guidelines should be followed for optimal performance.
See “Layout Considerations.”
16