• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 62 subscribers
  • Views 157 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

LMZ31530: Rset value for Vin = 9.0V

Kazuhiko Hirano
Genius 11613 points
Part Number: LMZ31530

Hello,

 

My customer would like to use LMZ31530 with Vin = 9.0V for the following three cases.

 

Vin = 9.0V, Vout = 1.0V

Vin = 9.0V, Vout = 1.8V

Vin = 9.0V, Vout = 3.3V

 

Could you provide appropriate Rset value for above three cases, please?

 

Best regards,

 

K.Hirano

  • 0
    TI__Genius 17905 points

    Hi Hirano-san,

    You can use RSET values in between the ones recommended for PVIN=12V and 5V in Table 1 in the datasheet. The values in the table should get you pretty close to the target. The DC output voltage will depend on the ripple at the VADJ pin, which will depend on your output cap, so from this initial value you may fine tune the value further if the real measured DC voltages on the board are not close enough to the desired values.

    Regards,
    Kris