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Original question:

TLV755P: Drop Out

TLV755P: Drop Out

Mark Ackerson
Genius 10190 points
Part Number: TLV755P

Hi Ryan,

Any concern with the TLV755P output voltage ramp below?  C2 is 1.8V input and C3 is 1.2V output.  Without seeing the input ramp it looked strange, but looking at them on the same plot it makes sense.  Do you agree?

Regards,
Mark

  • 0
    TI__Guru 55940 points
    Hi Mark,

    It is a bit tricky to tell since the input and output are on different voltage scales; however, it does look like the output is following the input voltage. This appears to be leakage since you are below the UVLO threshold. This leakage can occur with many LDOs particularly at higher temperature and low load conditions. No damage will occur to the LDO due to this leakage.

    The true startup appears to occur where you have your trigger. At this point you can see the faster slew rate on both Vin and Vout until regulation is met.

    Very Respectfully,
    Ryan