LM4950 Output Stop Problem

Kuramochi Tadahiko

Guru 28715 points

Other Parts Discussed in Thread: LM4950

Hi,

My customer has trouble on LM4950.

The output stops after the shutdown pin is switched L→H→L… by 0.8sec~1sec.

The output returns by the hard-reset.

Is this correct operation?

And is there any solution?

Regards,

Kuramochi

over 10 years ago

0 José Luis over 10 years ago

TI__Mastermind 20085 points

Hi Tadahiko-san

The wake-up time depends of the CB(Cbypass). For instance, if you use a CB=10uF the wake-up time is 440ms. If you want to reduce or increase the wake-up time, you could change the CB. You could refer to the Power Supply Bypassing section of the amplifier's datasheet to find more information. Please let me know your opinion or if you have more questions.

Best Regards
Jose Luis Figueroa
Audio Applications Engineer | A-Team

0 Kuramochi Tadahiko over 10 years ago in reply to José Luis

Guru 28715 points

Luis-san,

Thank you for your support.
And I am sorry for late reply.

I'm going to post another thread about LM4950.
I appreciate your help.

Best Regards,
Kuramochi

Audio

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LM4950 Output Stop Problem