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LMR70503: LMR70503 design review

Jay Li
Prodigy 110 points
Part Number: LMR70503

Hi ,

We choose the LMR70503 as power rail on a new project.

We have completed the schematic and layout of LMR70503.

We  would like to ask you to give some advices for the schematic and layout of LMR70503 we drew below.

Schematic:

Layout:

Thanks

Best regards

Jay Li

  • +1
    TI__Genius 11215 points

    Hello, 

    Thanks for reaching out. What is the input voltage range to this circuit? This IC might not be able to deliver 0.27 A of current, please check the Figure 33 at page 12 of the datasheet. We're looking forward to hearing from you. 

    Kind regards,
    EM

  • +1 in reply to EM
    Prodigy 110 points

    Hi,

    Thanks for your quickly response.

    the input voltage of LMR70503 we set is 3.3V,and it is adjustable between 3-4V.

    I checked the figure33 and confirmed the cuurent of LMR70503 in our case is about 80mA. It's ok for our current project.

    Are there any other questions in the schematic and layout of LMR70503 we drew ?

    Please help to check and review it .

    Thanks

    Best regards

  • +1 in reply to Jay Li
    TI__Genius 11215 points

    Hello, 

    Thank you for your message. The schematic looks ok, please check Figure 39 for the layout, in order to have it as similar as possible to the suggested one in the datasheet. Let us know if you have further questions. 

    Kind regards,
    EM