Texas Instruments UCC3952PWTR-3, UCC3952PWTR-2, UCC3952PWTR-1, UCC3952PW-4, UCC3952PW-3 Datasheet
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UCC3952-1/-2/-3/-4
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
DESCRIPTION
The UCC3952 is a monolithic BiCMOS lithium-ion battery protection circuit that is designed to enhance the useful operating life of one cell rechargeable 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 discharged. Additional features include an on chip MOSFET for reduced external component count and a charge pump for reduced power losses while charging or discharging a low cell voltage battery pack. This protection circuit requires one external capacitor and is able to operate and safely shutdown in the presence of a short circuit condition.
APPLICATION DIAGRAM
1 |
TCLK |
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PACK+ |
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16 |
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+ |
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3k |
CBPS |
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2 |
N/C |
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15 |
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3 |
BNEG |
N/C |
0.1 F |
14 |
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4 |
BNEG |
PACK– |
CHARGER |
13 |
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5 |
BNEG |
PACK– |
12 |
6 |
BNEG |
PACK– |
LOAD |
11 |
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7 |
BNEG |
PACK– |
10 |
8 |
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9 |
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BNEG |
PACK– |
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UDG-98205
SLUS400A - FEBRUARY 2000
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 terminal. Consult Packaging Section of Databook for thermal limitations and considerations of packages. All voltages are referenced to GND.
TSSOP-16 (TOP VIEW)
PW Package
TCLK |
1 |
16 |
PACK+ |
N/C |
2 |
15 |
CBPS |
BNEG |
3 |
14 |
N/C |
BNEG |
4 |
13 |
PACK– |
BNEG |
5 |
12 |
PACK– |
BNEG |
6 |
11 |
PACK– |
BNEG |
7 |
10 |
PACK– |
BNEG |
8 |
9 |
PACK– |
UCC3952-1/-2/-3/-4
CONNECTION DIAGRAMS
SOIC-16 (TOP VIEW)
DP Package
TCLK |
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PACK+ |
1 |
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16 |
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CBPS |
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N/C |
2 |
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15 |
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N/C |
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N/C |
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3 |
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14 |
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SUB |
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SUB |
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4 |
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13 |
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SUB |
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SUB |
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5 |
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12 |
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BNEG |
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PACK– |
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6 |
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11 |
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BNEG |
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PACK– |
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7 |
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10 |
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BNEG |
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PACK– |
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8 |
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9 |
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BCC-18 (TOP VIEW)
GSH Package
N/C |
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TCLK |
PACK+ |
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N/C |
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1 |
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18 |
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17 |
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16 |
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2 |
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N/C |
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CBPS |
15 |
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3 |
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BNEG |
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N/C |
14 |
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BNEG |
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4 |
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PACK– |
13 |
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5 |
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BNEG |
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PACK– |
12 |
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6 |
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BNEG |
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PACK– |
11 |
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7 |
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8 |
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9 |
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10 |
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BNEG BNEG |
PACK– |
PACK– |
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Consult factory for GSH package availability.
ELECTRICAL CHARACTERISTICS: Temperature Range: –20°C < TA < 70°C, Unless otherwise stated. All voltages are with respect to BNEG. TA = TJ
PARAMETER |
TEST CONDITIONS |
MIN |
TYP |
MAX |
UNITS |
State Transition Threshold Section |
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NORM to OV (VOV) |
UCC3952-1 |
4.15 |
4.20 |
4.25 |
V |
OV to NORM (VOVR) |
UCC3952-1 |
3.85 |
3.90 |
3.95 |
V |
NORM to OV (VOV) |
UCC3952-2 |
4.20 |
4.25 |
4.30 |
V |
OV to NORM (VOVR) |
UCC3952-2 |
3.90 |
3.95 |
4.00 |
V |
NORM to OV (VOV) |
UCC3952-3 |
4.25 |
4.30 |
4.35 |
V |
OV to NORM (VOVR) |
UCC3952-3 |
3.95 |
4.00 |
4.05 |
V |
NORM to OV (VOV) |
UCC3952-4 |
4.30 |
4.35 |
4.40 |
V |
OV to NORM (VOVR) |
UCC3952-4 |
4.00 |
4.05 |
4.10 |
V |
2
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