Component identification.

[Azertyyyy]

Hi,

Could. someone tell me what's the component on the picture sot23 package (43L)? I can't find the datasheet.

 

[AnalogKid]

The reference designator "VR1" tells me it is a voltage reference or regulator of some kind, maybe a shunt regulator like a TL431, or any of a zillion active voltage references.

ak

 

[Diver300]

I also think that it's a TL431 or equivalent. Is it in a switch-mode power supply? A lot of those use TL431or similar for the voltage feedback.

 

[augustinetez]

This is one entry I could find for 43L - LM431SACM3X Fairchild SOT-23 Adjustable/2.5V, 2% Tolerance Shunt Regulator - as AK says a 431.