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What is the STM32WL55 LDO mode output capacitor value on the VFBSMPS pin?

AO.2
Associate

‎2022-06-21 06:55 AM

The datasheet indicates the value of 470nF for the SMPS mode on the VFBSMPS pin. But for the LDO mode, I didn't find the required value.

Thanks

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Louis AUDOLY
ST Employee

‎2022-06-28 05:15 AM

Hello @AO.2​  and welcome to the community,

For LDO mode, you just have to remove the SMPS coil and keep the 470nF capacitance as you can see in the figure 3 of the datasheet .

Best regards

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