B57825 Philips IC Help

Hello,
I have this B57825 chip in one of the Landini tractor control boards, that seem to be malfunctioning. I can't find any info online at all. Do you guys have an idea what it is? Any datasheet is most welcome.

Maybe it's a custom-made chip.

I have found out, that it is a NTC control chip. Trying to figure out the pinout though.