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L5973D 24V in 12V OUT Max current

DKim.24
Associate

Hi

I'm trying to use L5973D for 24V in 12V Out

How can I calculate Max current when Vo is 12V

1 REPLY 1
Peter BENSCH
ST Employee

There are several factors influencing the max current in your design, e.g.:

  • current limit (for L5973D: min 2.5A)
  • power dissipation (max 2.25W according to the datasheet)
  • thermal resistance (for L5973D: 40K/W)
  • ambient temperature
  • possibly additional cooling

You should be able to get an output current of 2A, but maybe it is a good idea to simulate your design using our eDesignSuite.

When your question is answered, please close this topic by choosing Select as Best. This will help other users find that answer faster.

Good luck!

/Peter

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