Hello friends , as i`m quite new to this voltage reg , is it normal for it to run quite hot , it is unpleasant when touching it ? Input voltage is around 10 V DC and the output stays at 5 V DC and it seems stable , but i do suppose that it oscillates somehow . It has been used for providing a PSU for the digital +5v of the Xylink transport to DAC and the reason why i do think it is faulty is because of the fact that first it is working fine but after some minute or more it is start to add clicking to the sound . How can i check this reg if it is working properly ? I have tried looking at the outputs with oscilloscope but found nothing ...
Do you hear clicking from the switch-mode step-down converter itself, for example from its inductor or from its output capacitor, or from the loudspeakers? Did you manage to solder the exposed die pad properly and is it connected to a sufficiently large piece of copper plane?
Noise is from the speakers , yes had a look at it and it seems fine soldered , copper plane is not that big
Why do you think the problem is related to the step-down converter? Does it work properly with another 5 V supply?