Faisal
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After modeling the ESR variation vs. frequency as described in the Ken Kundert's paper "Modeling Dielectric Absorption in Capacitors", I have come to conclusion that for LDO, only the ESR value near the resonance frequency is critical.
The Resistance value at low frequencies has no influence either on stability or transient behavior, probably because of high time constants.
I would like to know about the experience of ESR with other LDO designers on this forum
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