LM224: Recommendation Value for Bypass Capacitor

hideyuki sakai

Mastermind 6250 points

Part Number: LM224

Dear, Sir.

The datasheet describes the recommendation value for bypass capacitor is

0.1uF. However, my customer is considering to change to more smaller value

as 0.0088uF ~ 0.011uF.

1. Is it no problem to set such smaller value as bypass capacitor?

2. Please clarify the range of the recommendation value if you have.

Best Regards,

H. Sakai

over 4 years ago

0 Ron Michallick over 4 years ago

TI__Guru*** 140126 points

Sakai-san,

The minimum bypass capacitance is zero. The LM224 does not require a capacitor.

Having a good phase margin (stability) in the application circuit is always a good idea. More so with no bypass capacitor.

0 kai klaas69 over 4 years ago

Guru 140200 points

Hi Hideyuki,

it depends a bit on the actual circuit and the load the LM224 sees at its output. Can you post a schematic? And what is the load connected to the output? Also, how is the LM224 powered? Linear voltage regulator, switcher or battery?

Kai

0 hideyuki sakai over 4 years ago in reply to kai klaas69

Mastermind 6250 points

Dear, Kai-san.

Thank you so much for your support.

I have obtained the schematic & supply information.

Is possible to contact to my private mail because the schematic is a type of confidential?

My mail ADRS : <email address removed by TI for privacy concerns>

Best Regards,

H. Sakai

0 Ron Michallick over 4 years ago in reply to hideyuki sakai

TI__Guru*** 140126 points

Sakai-san,

You can share information privately after completing a friend request. Hover mouse over a user name and select request friendship. Note that Kai is not a TI employee. However, his advice is very good. I will send a friendship request to you.

0 hideyuki sakai over 4 years ago in reply to Ron Michallick

Mastermind 6250 points

Dear, Ron-san and Kai-san.

Thank you so much for all of your support.

I tried to send the customer's schematic & power supply information via private mail.

Have you received with no problem?

Best Regards,

H. Sakai

0 Ron Michallick over 4 years ago in reply to hideyuki sakai

TI__Guru*** 140126 points

Sakai-san,

Message received

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LM224: Recommendation Value for Bypass Capacitor