Print Page 1 of 13 TOPRO CONFIDNETIAL
2003/7/28 Print
QW730101-05A
TP3102
1Cell Li-ion Battery
Protector IC
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Version: 1.1
Aug/2002
http://www.topro.com.tw
HQ:
5F, No.10, Prosperity Road 1, Science-Based Industrial Park, Hsinchu 300, Taiwan, R.O.C
300 10 5
TPE:
5 F, No.27, Min Chuan W. Rd. Taipei 104, Taiwan, R.O.C
104 27 5
SHENZHEN
:
Room 802, Tower A, World Trade Plaza, Fahong Rd., Fatian, Shenzhen, China
9 A 802 (518033)
H.Q.: Tel:886-3-5632515 Fax:886-3-5641728
TPE.: Tel:886-2-25856858 Fax:886-2-25941104
SHENZHEN:TEL:755-3679985 Fax:755-3679518
Print Page 2 of 13 TOPRO CONFIDNETIAL
2003/7/28 Print
QW730101-05A
TP3102
1Cell Li-ion Battery
Protector IC
Contents
1. General Specification
P. 3 ---
P.
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2. Pin Configurations and Package Type
P. 4 ---
P.
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3. Pin Descriptions
P. 4 ---
P.
4
4. Functional Block Diagram
P. 5 ---
P.
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5. Function Descriptions
P. 6 ---
P.
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6. Absolute Maximum Ratings
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7. DC Electrical Characteristic
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P.
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8. Feature
P. 11 ---
P.
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9. Application Diagrams
P. 12 ---
P.
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10. Application Notes
P. 13 ---
P.
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Print Page 3 of 13 TOPRO CONFIDNETIAL
2003/7/28 Print
QW730101-05A
TP3102
1Cell Li-ion Battery
Protector IC
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The TP3102 series are protection IC for over-charge/discharge of rechargeable one-cell Lithium-ion
(Li+) batteries by CMOS process.
The TP3102 series can detect over-charge/discharge of Li+ one-cell and excess load current, further
include a short circuit protector for preventing large external short circuit current.
Each of these ICs is composed of three voltage detectors, a reference unit, a hysteresis circuit, and a
short circuit protector. When charging voltage crosses the detector threshold from a low value to a
value higher than VDET1, the output of COUT pin, the output of over-charge detector/VD1, switches
to low level, charger's negative pin level. After detecting overcharge the VD1 can be reset and the
output of COUT pin becomes "H" when the VDD voltage is coming down to a level lower than '
VDET1
VHYS1 ", or when a charger is disconnected from the battery pack while the VDD level is
in between 'VDET1" and ' VDET1
VHYS1 " in the TP3102 version.
The output of DOUT pin, the output of over-discharge detector/VD2, switches to "L" after
internally fixed delay time passed, when discharging voltage crosses the detector threshold from a
high value to a value lower than VDET2. An excess load current can be sensed and cut off after
internally fixed delay time passed through the built in excess current detector, VD3, with DOUT being
enabled to low level. Once after detecting excess current, the VD3 is released and DOUT level
switches to "H" by detaching a battery pack from a load system.
Further, short circuit protector makes Dout level to "L" immediately with external short circuit
current and removing external short circuit leads DOUT level to "H". After detecting over-discharge,
supply current will be kept extremely "L" by halting some internal circuits operation. The output
delay of over - charge detectors can be set by connecting external capacitors. Output type of COUT
and DOUT are CMOS. SOT26-w is available.
Print Page 4 of 13 TOPRO CONFIDNETIAL
2003/7/28 Print
QW730101-05A
TP3102
1Cell Li-ion Battery
Protector IC
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PIN DESCRIPTION:
Pin No
Symbol
Pin description
3 C
OUT
Output of over-charge detection, CMOS output
4 ID
Battery
ID
6 V
SS
Ground
1 D
OUT
Output of over-discharge detection, CMOS output
5 V
DD
Power
supply
2
V-
Pin for charger negative input
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