Hi team.
In datasheet, recommended input capacitor is noted about size too.
This is because consider DC bias characteristic. Is this correct?
Best regards,
teritama
This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Hi
Sorry for not surely understand, can you describe the problem more clearly?
Thank you
HI
Sorry for lack my explained.
The datasheet p24 says about input capacitor selection like follow.
"Use a good-quality 10-µF, 1210 (3225) case size, X5R or X7R ceramic capacitor with sufficient voltage rating on the input of the device. Alternatively, in applications with strict size constraints and more stable input voltage it is possible to use a 10-µF, 1206 (3216) case size or a parallel combination of 2 × 4.7-µF, 0805 (2012), X5R or X7R capacitors."
This refers to the capacitor size like "1210(3225)". I understand that this is due to DC bias characteristics.
Is my understanding correct? If there is other reason, I want to know.
Best regards,
teritama
Hi Teritama
Yes you are right, this is for the DC bias consideration. For the same rated capacitor ,like 10uF/25V,X7R, although the specs are the same, The cap which size is 1210 normally has better DC Bias Characteristic than the 1206 ones.
For example, you can see the characterization sheet for "C3216X7R1E106K160AE"
https://product.tdk.com/system/files/dam/doc/product/capacitor/ceramic/mlcc/charasheet/c3216x7r1e106k160ae_200122.pdf and "C3225X7R1E106K250AC"
Please let me know if you have further questions.
Thank you.
No problem.