On Tue, Aug 29, 2023 at 08:29 AM, Kees T wrote:
1) What is happening to 3.3V between t=80ms and t=200ms after Power ON ? Need more detail on the actual voltage seen.?Maybe Jonathan can expand that area on the scope so you see more 3.3V. detail ?
Here's a tighter view:
And zoomed in on the linear regulator portion. ?Vertical scale in both is 500mV/division with a -1.5V offset.
Here's a similar trace with channel two showing LIN_REG_EN. ?Note the difference in scale and offset between the two channels. ?I didn't include VCC here because I don't have enough hands to hold the probes and not short anything out, sorry.
