Regarding the input capacitance of the power supply IC, we are considering placing two 0.1uF MLCCs in series and a 1000uF electrolytic capacitor on the IN terminal line.
The data sheet states min0.1 uF, typ 1uF, and contains the following information.
(1) For robust EMI performance the minimum input capacitance is 500 nF.
Let me ask you a few questions.
①Does the above information apply to the circuit configuration of MLCC only?
(Is this a level that cannot be covered by electrolytic capacitors?)
②If ① is yes, the MLCC will be 0.05uF in the circuit currently being considered, but what kind of impact will it have if this becomes smaller? Is it okay to understand that it's just EMI performance?