• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 63 subscribers
  • Views 59 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.

TPS7B4250-Q1: Output capacitor selection for TPS7B4250-Q1

Kenneth Lee
Intellectual 1708 points
Part Number: TPS7B4250-Q1

Tool/software:

Hello Expert, 

My customer is using TPS7B4250-Q1 and reviewing their external component with car oem.

She is using 2.2uF MLCC on the output of TPS7B4250-Q1. 

 

Datasheets specifies requirement of output capacitor as below. 

  1. VALUE : 1~50Uf
  2. ESR : 0.001 ~ 20 ohm

There're no comment about the frequency range of this ESR requires.

Could you please specify which frequency range the ESR should meet the requirement?

Thank you in advance. 

  • +1
    TI__Expert 5081 points

    Hey Kenneth.

     

    Thank you for the question.

    Most MLCC capacitors have extremely low ESR and generally meet the requirement, but ensure the output capacitor is in range in the10khz range as this is where the LDO's internal error amplifier and feedback loop are most sensitive

    Thanks,

    Vahnroy