Replacement of LM8207

Eric Chen4

Expert 2370 points

Other Parts Discussed in Thread: LM8207, BUF20800, PMP9780, TPS65131-Q1

Hi,

I find LM8207 that it is NRND parts but I need negative voltage support.

But suggest parts -- BUF20800 that can't support negative voltage for Gamma Buffer application.

Would you kinldy provide your suggestion for our check again?

Thanks your help.

Best Regards,

Eric

over 7 years ago

0 Ilona over 7 years ago

TI__Expert 8010 points

Hello Eric,

Can you please specify the requirements for the application, like

What value for the negative voltage is required?
How many channels are required?
Do you already have a LCD Supply solution? If no, specify voltage/current of source/gate driver requirements

Thank you.

Best Regards.

Ilona

0 Eric Chen4 over 7 years ago in reply to Ilona

Expert 2370 points

Hi IIona,

I attach LCD panel spec for your check again as below.

Thanks your help.

0 Diaara over 7 years ago in reply to Eric Chen4

TI__Intellectual 2805 points

Hello Eric,

You could use the TPS65131-Q1 as replacement of LM8207. For that refer to the reference design PMP9780. For the VCOM + Gamma Buffer part I did not find a suitable part (I will let you know if that changes).

Best regards,
Diaara

0 Brigitte over 7 years ago in reply to Eric Chen4

TI__Guru 58215 points

Hello Eric,

Thank you very much for the Gamma Buffer requirements. Are you already using LM8207? If yes, would it be possible that you share the setup you are using the part in at the moment? I think it is possible to use BUF20800 in a similar way.

Best regards,
Brigitte

0 Brigitte over 7 years ago in reply to Brigitte

TI__Guru 58215 points

Hello Eric,

Did BUF20800 solve your issue?

Best regards,
Brigitte

Power management

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Replacement of LM8207