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TLIN1028-Q1: Question about the values of capacitors

Chase Jeong
Guru 10005 points

Part Number: TLIN1028-Q1

Dear TI experts,

My customer consider TLIN10283DRBRQ1 for their new project.

The PCB is very small, so customer have to choose everything very small.

And about capacitor for Vsup and Vcc, it is recommended as 100nF for Vsup and minimum 1.5uF for Vcc.

Could you check it once again for the values/power ratings of capacitors?

Customer's current consumption of Vcc is under maximum 10mA. (5mA typical)

  1. Capacitor for Vsup : (values and power ratings)
  2. Capacitor for Vcc : (values and power ratings)

Best regards,

Chase

  • 0
    TI__Guru* 80542 points

    Hi Chase,

    1. 100 nF, 25 to 50 V is typical dependent on the system environment.

    2. 1.5 uF and a smaller cap could affect stability. Larger values can be acceptable. 10 to 16 V is typical dependent on the system environment. Hence, we do not recommend reducing the VCC capacitor below 1.5 µF, even though the customer’s current consumption is relatively low. I.e., the limiting factor should be the regulator’s stability rather than the output current, thanks 

    Best Regards,

    Michael. 

  • 0 in reply to Michael Ikwuyum
    Guru 10005 points

    Dear Michael,

    Thank you for your support.

    According to your suggestion,

    1. Capacitor for Vsup : 10nF, 25V is minimum value.

    2. Capacitor for Vcc : 1.5uF, 10V is minimum value.

    Please check it once again.

    Best regards,

    Chase

  • 0 in reply to Chase Jeong
    TI__Guru* 80542 points

    Hi Chase,

    Yes. However, please note that 1 is for 100 nF rather than 10 nF consistent with the data sheet's recommendations, thanks.

    Best Regards,

    Michael.

  • 0 in reply to Michael Ikwuyum
    Guru 10005 points

    Dear Michael,

    Thank you for your support.

    10nF is my typo. I sent it to my customer as 100nF.

    Best regards,

    Chase