Hello,
According to the reference circuit (https://docs.nordicsemi.com/r/bundle/ps_nrf54lm20a/page/chapters/ref_circuitry.html-concept_refcircuit_config_1), a bulk capacitor C4 with a value of 10 µF / 6.3 V in a 0402 package is used. If a 3.3 V MCU supply voltage is used, the effective capacitance is approximately 4 µF in the 0402 package.
Is this expected to be the minimum effective capacitance, or is a lower capacitance acceptable?
I am asking because I need to save space on the PCB, so I would like to know whether this minimum capacitance is actually acceptable.
Thank you.
| C4 | 10 µF | Capacitor, X6S, 6.3 V, ±20% | 0402 |