SM12 ?

[bob.steel]

I have a circuit with a dc photovoltaic string of about 280 volts feeding into this. The circuit calls for a SM12 chip with I think 4 pins. I guessed it was a voltage regulator of some kind but all the googled datasheets give different devices and none seem to fit this .
Can anyone tell me what it would be and where I would get one?

Its marked Pin 1 is L, Pin 2 is N, Pin 3 is +12 v, Pin 4 is 0 v Just noticed in the notes he says " A small Chinese postage stamp sized 12v dc power supply provides power ." Could these two be the same thing .

 

[davenn]

I have a circuit with a dc photovoltaic string of about 280 volts feeding into this. The circuit calls for a SM12 chip with I think 4 pins. I guessed it was a voltage regulator of some kind but all the googled datasheets give different devices and none seem to fit this .
Can anyone tell me what it would be and where I would get one?

Its marked Pin 1 is L, Pin 2 is N, Pin 3 is +12 v, Pin 4 is 0 v Just noticed in the notes he says " A small Chinese postage stamp sized 12v dc power supply provides power ." Could these two be the same thing .

Please show us the circuit

 

[Bluejets]

Started to see some LED units with only the one ic driven from 220v AC, no other driver gear.
Seem to be known as "smart ic" LED driver.

Haven't seen much more on the particular ic though.

 

[dave9]

Please show us the circuit

and the notes, and pictures, and ...

Is this something you're building or repairing and either way, on a custom PCB where you need a certain form factor IC, or just the function of regulating from one voltage to another (12VDC?) ?

 

[bob.steel]

No its just a straight forward question . If its not familiar to you straight off then you probably won't be able to help.

 

[Bluejets]

Well....there ya go Dave.....I guess this means you have been officially informed of your level of ability...

 

[davenn]

Well....there ya go Dave.....I guess this means you have been officially informed of your level of ability...

hahaha some people are so obnoxious

and for being a smartass his thread is closed