This part is a kind of semiconductor called BA10339xx.

Function of this product has Ground Sense Comparator.

Manufacturers : ROHM

Image and pinout :

Some of the text within the PDF file :

Datasheet Comparators Ground Sense Comparator BA8391G BA10393F BA10339xx BA2903xxx BA2903Sxxx BA2903Wxx General Description General purpose BA8391G/BA10393F/BA10339xx and high reliability BA2903xxxx/BA2901xxx integrate one, two or four independent high gain voltage comparator. Some features are the wide operating voltage that is 2V to 36V (for BA8391G/BA10393F/ BA2903xxxx/BA2901xxx) 3V to 36V (for BA10339xx) and low supply current. Therefore, this series is suitable for any application. BA2901xx BA2901Sxx Key Specifications  Wide Operating Supply Voltage(Single Supply): BA8391G/BA10393F +2.0V to +36.0V BA2903xxx/BA2901xxxx +2.0V to +36.0V BA10339xx +3.0V to +36.0V  Wide Operating Supply Voltage(Split Supply): BA8391G/BA10393F ±1.0V to ±18.0V BA2903xxxx/BA2901xxx ±1.0V to ±18. [ ... ]

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