LMR23610: Cff selection

Part Number:LMR23610

Hi

Cout = 47uF and Cff = 39pF is obtained from Webench simulation with Vin=24V, Vout=3.3V and Iout = 0.3A.

While, according to equation (17) and (18), Cff can be calculated as 58pF under following condition.

Vout = 3.3V,

Cout = 47uF (ceramic capacitor after derating)

RFBT = 51Kohm

If selected Cff is smaller than the result of calculation, what impact can be considered?

BestRegards