AnsweredAssumed Answered

ADP190 maximum input voltage

Question asked by Gneut on Nov 3, 2011

Triggered by functionality and dimensions of the ADP190 power switch it suited well in my design. However, I see a drawback regarding the maximum input voltage: 3.6V, and according the datasheet 4.0V as absolute maximum. Looking at as combination of 3x NiMg batteries, fully charged it offers at least 4.1V and a fully charged Lipo battery cell 4.2V. This makes it hard to implement the ADP190 with any Lipo cell. The device is designed for low power and I do not want to loose battery charge  to have voltage from a Lipo cell dropping below 4.0V

 

How strict is the 4.0V absolute maximum? Any suggestions to overcome this?

 

Thanks.

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