LM4875: Input capacitor

Atsuo Nakano

Prodigy 40 points

Part Number: LM4875

Tool/software:

Hi Ti,

The LM4875 datasheet describes Input Capacitor.
What is the best type of Capacitor?

Ceramic, multilayer ceramic, film, voltage, etc.

best regards

3 months ago

0 Ivan Salazar 3 months ago

TI__Guru** 109145 points

Hi Atsuo,

Ceramic / MLCC are the most commonly used caps for this purpose. Usually, you select a non-polarized type of cap for this purpose.

Best regards,
-Ivan Salazar
Applications Engineer

0 Atsuo Nakano 3 months ago in reply to Ivan Salazar

Prodigy 40 points

Thank you for your prompt reply.

Are there any recommended specifications for Ceramic / MLCC?
Temperature characteristics, rated voltage, etc.

best regards

+1 Ivan Salazar 3 months ago in reply to Atsuo Nakano

TI__Guru** 109145 points

Hi Atsuo,

X7R or X5R are usually best. Voltage rating should allow some headroom on top of the intended application requirement, eg. if the signal Vpk is 5V you may use 15V rated caps. Special consideration is needed whenever DC voltage is applied to the capacitor, as the capacitance derated considerably in ceramic caps as DC is applied to it.

Best regards,
-Ivan Salazar
Applications Engineer

0 Atsuo Nakano 3 months ago in reply to Ivan Salazar

Prodigy 40 points

Thank you for your response.

I understand the selection specification.

Thank you very much.

Best regards,

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LM4875: Input capacitor