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AN2390 Fiches technique(PDF) 29 Page - STMicroelectronics

No de pièce AN2390
Description  A flexible universal battery charger
PDF  42 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2390 Fiches technique(HTML) 29 Page - STMicroelectronics

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AN2390
How to use the evaluation board
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3.3.2
Li-ion battery charger
The following parameter values are used in the Li-ion charger:
The following values are programmed for the different phases:
1) Precharge Phase:
Here Vbat <= 3.0 V and charging current: 200 mA
2) Constant Current Phase:
Here 3.0 < Vbat < 4.2 V and charging current: 500 mA
3) Constant Voltage Phase:
Here 4.15< Vbat < 4.2 V
Table 9 shows the results of an experiment with the evaluation board charging a single Li-ion
battery.
Table 6.
Li-ion battery charger parameters
SL No
Parameter name
Value
Input Parameter
1
Input Supply Voltage
5 V
2
Max Input Supply Current
2A
Output Parameter
3
Max Battery Output Voltage
4.2V
4
Max Output Current
1000 mA



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