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The absolute maximum rating of battery protection IC

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ALLEN_GUN

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Dear all:
The link website is shown below is the one cell battery protection IC
**broken link removed**

In page "8", It's written the VDD pin's absolute maximum rating is 12v

I have a problem with this spec. Hope someone can give me a solution. Thanks!!

1.The one cell Li-ion battery cell is only about 4.2V. Why or when the BPIC's VDD Pin need 12V rating???
 

see caution on the same page:

Code: 
Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical
damage. These values must therefore not be exceeded under any conditions.

4.2 V lies in range specified electrical specification. So overcharge u can set around 4.2 V.

Hope this helps.
 

    A

    ALLEN_GUN

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Usually, the overcharge protection voltage is set around 4.3V

So the VDD is protected at 4.3V.

Thus, why the VDD pin need 12V rating??

When the 12V voltage occurs at VDD pin??
 

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