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A4001 Datasheet(PDF) 15 Page - AIT Components Ltd.

Part No. A4001
Description  BATTERY MANAGEMENT
Download  17 Pages
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Manufacturer  AITCOMPONENTS [AIT Components Ltd.]
Direct Link  http://aitcomponents.com
Logo AITCOMPONENTS - AIT Components Ltd.

A4001 Datasheet(HTML) 15 Page - AIT Components Ltd.

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AiT Semiconductor Inc.
www.ait-ic.com
A4001
BATTERY MANAGEMENT
ONE CELL LITHIUM-ION/POLYMER BATTERY PROTECTION IC
REV1.0
- JUN 2014 RELEASED -
- 15 -
Typical Application Circuit
Symbol
Components
Purpose
Min.
Typ.
Max.
Remarks
R1
Resistor
Limit current, stabilize VCC and
Strengthen ESD protection
100
Ω
100
Ω
200
Ω
1
R2
Resistor
Limit current
1K
Ω
1K
Ω
2K
Ω
2
C1
Capacitor
Stabilize VCC
0.01uF
0. 1uF
1.0uF
3
M1
N-MOSFET
Discharge control
-
-
-
4
M2
N-MOSFET
Charge control
-
-
-
5
1
R1 should be as small as possible to avoid lowering the overcharge detection accuracy due to current
consumption. When a charger is connected in reversed, the current flows from the charger to the IC. At
this time, if R1 is connected to high resistance, the voltage between VCC pin and VSS pin may exceed the
absolute maximum rating.
2
If R2 has a resistance higher than 2k
Ω, the charging current may not be cut when a high-voltage charger
is connected. Please select as large a resistance as possible to prevent current when a charger is
connected in reversed.
3
C1 will stabilize the supply voltage of VCC
,the value of C1 should be equal to or more than 0.01μF.
4
If a NMOSFET with a threshold voltage equal to or higher than the overdischarge detection voltage is
applied, discharging may be stopped before overdischarge is detected.
5
If the withstanding voltage between the gate and source is lower than the charger voltage, the FET may
be destroyed.


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