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I can't find anything that is matching with a 8 pin smd chip marked BDXCLC. The board is the electric motor controller of "ninebot Es2" scooter. As far as I can understand, it should be part of buck converter step down or dc to dc converter with 12 Volts output (input 30 - 45 volts. Pls. check the attached photo, component circled in red.

enter image description here

I'm looking for a datasheet and a possible replacement.

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  • \$\begingroup\$ Gonna be a pain in the neck to replace that one. Cooling pad and that blob of silicone/hot glue(?) next to it. The board looks quite polluted in general - the connectors are covered in goo too, which is one big no-no. It might eat itself in between the socket and the crimp. \$\endgroup\$
    – Lundin
    Commented Sep 24 at 11:21
  • \$\begingroup\$ Thankyou. Yes indeed. I had to remove all the silicon above.... \$\endgroup\$
    – Antonello Caraceni
    Commented Sep 26 at 15:07
  • \$\begingroup\$ Remove the silicone not the silicon :) Very easy to mix those two up for us who aren't native English speakers. \$\endgroup\$
    – Lundin
    Commented Sep 27 at 6:31

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It's a Silergy SY8502FCC step-down converter.

enter image description here

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(Source: lcsc.com)

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  • \$\begingroup\$ I think you've found the right part. But to make things complicated, there's an obscure Japanese manufacturer Bellnix which also has a BDX family of step-down converters, but not in SO8 package. \$\endgroup\$
    – Lundin
    Commented Sep 24 at 11:16

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