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Although there is no minimum value limit for ESR, there is a limit on the maximum value. The capacitance of the output capacitor has a minimum value limit, and the maximum value is listed for some products. Please refer to the technical materials for details. The minimum capacitance for the input capacitor will vary depending on model. Although the maximum value is not specified, to lower the impedance of the input terminal of the IC a capacitor with large capacitance and low ESR is recommended.Related Link:Technical Document