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LMC555: Spec Question Asking

Part Number: LMC555

Hi team,

According to datasheet.

From the datasheet of LCM555, and it can work from 1.5 to 12V . and in the use example, only list 1.5 ,5V,12V three voltage. But my customer plan to apply VBAT=4.0V on Vs, if it is ok?