Switching Power Supply Component Mark PULY

[leonarff]

I am trying to fix a switching source and found a SMD chip with puly mark and do not know what is.
Would anyone know what it is so I can find the datasheet ?
Thanks a lot.

Leonardo F. Farah

 

[kam1787]

seems more like a "un-marked" chip ............something the company does not want to reveal to help prevent copying the circuit.

 

[leonarff]

I tried to draft the schematic to better understand the circuit.
I do not know if it can help.

 

[FvM]

O.K. it's a tiny switch-mode controller. Unfortunately SMD IC markings are vendor specific and you can't identify the vendor if you don't find the marking by chance.

seems more like a "un-marked" chip ............something the company does not want to reveal to help prevent copying the circuit.

Don't think so. This kind of marking is commonly used for small SMD ICs. May be a catalog product, but we don't know if it's from a major vendor or an exotic one.