Hello,
I would like to ask you about bootstrap capacitor selection for the LM2672MX device.
In the data sheet, CB is described as "0.01uF, 50V Ceramic".
However, 50V products are not readily available, so I would like to change to 25V products.
If the input voltage is 12V, the device's internal 5V will be added, resulting in a maximum of 17V (=12+5).
(Question)
Should I consider the DC bias characteristics of the bootstrap capacitor at 5V?
Assuming a DC bias of 5V, how many uF or more should the capacitance be?
I'm thinking of using Murata Manufacturing's "GRM033R71E103KE14", but if the DC bias is 5V, the capacitor capacity (-9.1%) will decrease slightly (there is also an error of ±10%).
Best regards,
