• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 63 subscribers
  • Views 343 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TLV62084A: Reducing Input Capacitance

Michael Balourdas
Expert 5515 points
Part Number: TLV62084A


Hello,

My customer is testing TLV62084A and they have a 10uF capacitor on the input as recommended, but are wondering if this value can be reduced.  They are seeing some in-rush current that is higher than they would like, and reducing this input capacitance shows a reduction in that in-rush current.  Can a lower Cin be used without causing this device to go unstable or out of regulation?

Vin = 2.7 to 5.5V

Vout = 1.85V

Iout = <1mA in idle, and <30mA average in run mode

Thanks,

Michael

  • +1
    TI__Mastermind 21620 points

    Hello Michael,

    Decrease of input capacitance to reduce the inrush current might come at the cost of instability in input voltage (higher Vin overshoot) that can result in exceed of Vin over the absolute max. rating.

    So it is not recommended to do so.

    Thanks and Best Regards,

    Farheen 

  • 0 in reply to Farheen
    TI__Mastermind 21620 points

    Hello Michael,

    If you do not have any more questions, please feel free to close the issue.

    Thanks and Best Regards,

    Farheen