• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 63 subscribers
  • Views 164 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.

LMZ35003: Minimun Cout

Hirotsugu Kobayashi
Mastermind 8915 points
Part Number: LMZ35003

Hi team,

What is the minimum capacity of the output capacitor of LMZ35003?

There is a description that it is 47uFx2 of Ceramic capacitor, but if it is 10.5Vout,

the capacity reduction of DC bias is large and I do not know how many should be used.

Best Regards,

  • +1
    TI__Genius 10685 points

    Hello,

    The datasheet recommends at least 100uF of output capacitance, or 2 x 47uF or 4 x 22uF so this is a good place to start. 

    The output capacitors on the EVM (Capacitor, ceramic, 25 V, 10%, X7R, 22 µF, 1210, GRM32ER71E226KE15L) appear to de-rate by around 20% when 5VDC is applied across them. That would result in around 70uF of effective output capacitance when operating in steady state, be sure to select output capacitors that result in at least this value when operating at your desired conditions. 

    Regards,

    Harrison Overturf