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参数资料
| 型号： | TS2208BCX6 |
| 厂商： | Taiwan Semiconductor Co., Ltd. |
| 英文描述： | Li-Ion Battery Protector |
| 中文描述： | 锂离子电池保护器 |
| 文件页数： | 1/6页 |
| 文件大小： | 107K |
| 代理商： | TS2208BCX6 |
TS2208A/B series
1-6
2003/12 rev. B
TS2208A/B
Li-Ion Battery Protector
Ideal for One-Cell Rechargeable
Li-Ion Battery
General Description
The TS2208A/B series are over-charge/discharge protection ICs for rechargeable one-cell Lithium-ion batteries. They
bear an over-charge/over-discharge threshold for the battery cell voltage during charging/discharging process, and also
provide on-time protection when excess current or short circuit occurs.
The TS2208A/B series are essentially composed of a reference unit and three voltage detectors. During charging
process, when the cell voltage/V
DD
crosses the over-charge threshold voltage V
C1
, the over charge detector (COM1) will
switch the output pin (C
OUT
) to a low level within a delay time (t
C1
), and thus turning off the MOSFET connected to the
charging path. The C
OUT
pin may change to high level again when the V
DD
voltage falls below “V
C1
-V
HYS
”, or when V
DD
falls below V
C1
while the charger is disconnected from the battery pack.
During the discharging process, when the V
DD
voltage crosses the over-discharge threshold voltage (V
D1
), the
over-discharge detector (COM2) will switch D
OUT
to low level within a delay time (t
D1
), and thus turning off the MOSFET
connecting the discharging path. In the mean time, the TS2208A/B series will enter a low current standby mode. Once
into standby mode, it can only be released from standby after the battery pack is connected to a charger.
The conditions of excess current and short circuit protection are both determined according to the voltage at the V- pin.
As the voltage of V- pin reaches a greater value than V
OC
, which means an undesirable large current is flowing through
the path, D
OUT
will be switched to a low level and the path is cutoff after internally pre-set delay time (t
OC
) elapses. In the
case of short circuit, i.e. V- rises above V
SHORT
, the path will also be cutoff but with almost no delay time. Once the excess
current or short circuit fault is removed, the built-in resistor at the V- pin, typically 100kohm, will pull V- down to V
SS
and
bringing the IC back to normal operation.
Together with the application circuit, the TS2208A/B will function as a consummate protector for Li-ion battery packs
which leads to safety and long lifetime.
Ordering Information
Note: Marking B
XX,
XX
is wafer and assembly lot code (A~Z and 1~9)
Part No.
Threshold Voltage
Reel
TS2208ACX6
4.33V ~ 4.37V
Black
White
TS2208BCX6
4.26V ~ 4.30V
Features
Low current consumption
Supply current 3uA (typ) and standby current 0.1uA
High withstand voltage up to 22V (VDD ~ V-)
High accuracy voltage detection
Over charge detector
Over discharge detector
Small package of SOT-26
Over current and short circuit protection
Applications
Over-charge and over-discharge protection for Li-ion
cell pack
High precision protectors for cell-phones and other
gadget using on board Li-ion cell battery
Pin Description
No. Symbol
Description
1
D
OUT
V
-
Output of over discharge detection
2
Pin for charger negative input
3
C
OUT
Output of over charge detection
4
C
EXT
Pin for external capacitor Setting
COM1 delay time
5
V
DD
Power supply
6
V
SS
Ground
Pin assignment
1. D
OUT
2. V
-
3. C
OUT
4. C
EXT
5. V
DD
6. V
SS
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