My customer met an issue with TLV2217. As it's shown below, there's an inrush current-limit resistor in series with input of TLV2217. When the resistor Rx is below 30ohm, TLV2217 works fine. When customer increases the resistor to above 70 or 80ohm, TLV2217 stops regulating normally and outputs 2.6V only , meanwhile drawing a lot more current from the input.
Similar results happened in LM7812, which I did a test on. I wonder if it's related to LDO's internal circuit or is it a stability issue? It'll be appriciated if you can introduce me the details. Thank you...