Smd code marking B8I 4 pin ,
pdf documan pls
Hello berk_2,
It seems that is an IC for voltage detection as seen here: Supervisors | Power Management (PMIC) | Electronic Components Distributor DigiKey which comes in few different packages one of which is 4 pin.
Take a look at the data sheet on it here:
S-808XXC Series VOLTAGE DETECTOR
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