Part Number: TPS7A7001
Dear Sir or Madam,
I am unable to access your PDF. Please follow the instructions to attach a file as described here.
Please be sure to include a schematic, any scope shots that may help show the issue, and the output current.
In reply to Ryan Eslinger:
In reply to mh_:
sorry, paralleling is the wrong word.
All these LDOs provdide individual voltages with current consumption (below 0.5A) but all take the same input voltage.
For some reason, all or some of the LDOs now have very low DC input resistance. As all the LDO inputs are in parallel, it is hard to say which one it is.
Thanks for any idea. Our development is on hold, till this problem is solved.
as the LDOs have become low-ohm after a few days/hours of operation. I can no longer turn them on.
May be we can start from a different point:: Could you please screen the schematic in my PDF. The caps, the poti, ... one more 4.7uF cap is placed at the output.
Anything wrong with that. We need to solve this problem. Right now, the only chance is to try different LDOs.
... yes, but something needs to be wrong.
#1) If the caps and their ESR do not lead to instability and failure
#2) If the resistor values, also from the Potis are all safe
then: what else could it be ?
Shall we change the LDOs ?
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