Texas Instruments UCC3952PWTR-3, UCC3952PWTR-2, UCC3952PWTR-1, UCC3952PW-4, UCC3952PW-3 Datasheet
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UCC3952-1/-2/-3/-4
DESCRIPTION
The UCC3952 is a monolithic BiCMOS lithium-ion battery protection circuit
that is designed to enhance the useful operating life of one cell recharge
able battery pack. Cell protection features consist of internally trimmed
charge and discharge voltage limits, discharge current limit with a delayed
shutdown and an ultra low current sleep mode state when the cell is dis
charged. Additional features include an on chip MOSFET for reduced exter
nal component count and a charge pump for reduced power losses while
charging or discharging a low cell voltage battery pack. This protection cir
cuit requires one external capacitor and is able to operate and safely shut
down in the presence of a short circuit condition.
Enhanced Single Cell Lithium-Ion Battery Protection IC
FEATURES
•
Protects sensitive Lithium Ion cells
from over-charging and
over-discharging
•
Dedicated for one cell applications
•
Integrated low impedance MOSFET
switch and sense resistor
•
Precision trimmed overcharge and
overdischarge voltage limits
•
Extremely low power drain
•
3A current capacity
•
Overcurrent and Short Circuit
Protection
•
Reverse Charger Protection
• Thermal Protection
SLUS400A - FEBRUARY 2000
1
3
2
4
5
7
6
8
16
14
15
13
12
10
11
9
0.1µF
3k
TCLK
N/C
BNEG
BNEG
BNEG
BNEG
BNEG
BNEG PACK–
PACK–
PACK–
PACK–
PACK–
N/C
CBPS
PACK+
LOAD
CHARGER
+
APPLICATION DIAGRAM
UDG-98205
2
UCC3952-1/-2/-3/-4
SOIC-16 (TOP VIEW)
DP Package
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (PACK+ to BNEG) . . . . . . . . . . . . . . . . . . . . 7V
Maximum Forward Voltage (PACK+ to PACK–) . . . . . . . . . 16V
Maximum Reverse Voltage
(where PACK+ to BNEG = 5V). . . . . . . . . . . . . . . . . . . . . –8V
Maximum Cell Continuous Charge Current. . . . . . . . . . . . . . 3A
Junction Temperature. . . . . . . . . . . . . . . . . . . . –55°C to 150°C
Storage Temperature Range . . . . . . . . . . . . . . –40°C to 125°C
Currents are positive into, negative out of the specified termi
-
nal. Consult Packaging Section of Databook for thermal limita
tions and considerations of packages. All voltages are
referenced to GND.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
N/C
TCLK
BNEG
BNEG
BNEG
N/C
SUB
SUB
SUB
SUB
N/C
PACK+
CBPS
PACK–
PACK–
PACK–
CONNECTION DIAGRAMS
PACK+
N/C
BNEG
BNEG
BNEG
BNEG
BNEG
TCLK
BNEG
8
7
6
5
4
3
2
1
9
10
11
12
13
14
15
16
CBPS
N/C
PACK–
PACK–
PACK–
PACK–
PACK–
TSSOP-16 (TOP VIEW)
PW Package
ELECTRICAL CHARACTERISTICS: Temperature Range: –20°C < T
A
< 70°C, Unless otherwise stated. All voltages are
with respect to BNEG. T
A
= T
J
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
State Transition Threshold Section
NORM to OV (V
OV
) UCC3952-1 4.15 4.20 4.25 V
OV to NORM (V
OVR)
UCC3952-1 3.85 3.90 3.95 V
NORM to OV (V
OV
) UCC3952-2 4.20 4.25 4.30 V
OV to NORM (V
OVR)
UCC3952-2 3.90 3.95 4.00 V
NORM to OV (V
OV
) UCC3952-3 4.25 4.30 4.35 V
OV to NORM (V
OVR)
UCC3952-3 3.95 4.00 4.05 V
NORM to OV (V
OV
) UCC3952-4 4.30 4.35 4.40 V
OV to NORM (V
OVR)
UCC3952-4 4.00 4.05 4.10 V
N/C
18 17
7 10
8
9
1
N/C
16
BNEG
CBPS
N/C
PACK–
TCLK PACK+ N/C
BNEG BNEG PACK–
15
14
2
3
4
5
BNEG
BNEG
BNEG
6
13
12PACK–
PACK–
11
PACK–
Consult factory for GSH package availability.
BCC-18 (TOP VIEW)
GSH Package
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