DRV8824: V3P3OUT capacitance

NAOKI AOYAMA

Guru 11215 points

Part Number: DRV8824

Hello,

Our customer use the DRV8824, have a question about V3P3OUT capacitance.

TI recommend to connect the capacitance as 0.47uF between V3P3OUT and GND.

The customer want to connect a capacitance as 0.1uF or less.

Is there any impact to characteristics of 3.3V regulator?

Best Regards,

Naoki Aoyama

over 8 years ago

0 Rick Duncan over 8 years ago

TI__Guru** 114905 points

Hi Aoyama-san,

The internal regulator was designed to use the recommended capacitor. Reducing the capacitance can cause stability issues with the regulator.

0 NAOKI AOYAMA over 8 years ago in reply to Rick Duncan

Guru 11215 points

Hi Rick-san,

Thank you for your reply.
I will suggest the customer to use the recommended capacitor.

Thanks,
Naoki Aoyama

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DRV8824: V3P3OUT capacitance