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UCC3952-4 Datasheet(PDF) 1 Page - Texas Instruments

Part # UCC3952-4
Description  Enhanced Single Cell Lithium-Ion Battery Protection IC
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

UCC3952-4 Datasheet(HTML) 1 Page - Texas Instruments

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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
0.1
µF
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


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