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LM25139-Q1EVM-440: Help me choose a microcircuit for a dc-dc converter.

Taras Burko
Prodigy 30 points
Part Number: LM25139-Q1EVM-440
Other Parts Discussed in Thread: LM25139, LM25149, LMR51403

Hi. I have been looking for a microcircuit for several days and can not decide on the choice.

Main parameters: Input voltage 33 V
Output voltage 13 V
Output current 10-200 mA
Current limit mode is required. So that the output current does not exceed 200 milliamperes.
I also plan to use UVLO and PFM

the most successful option is LM25139 

But there is perhaps another solution. Perhaps there is something with integrated transistors? 

 

  • 0
    TI__Genius 11020 points

    Thanks for your question. I will look into it and get back. 

  • 0 in reply to Naresh Adepu
    TI__Genius 11020 points

    hello Taras,


    For your specs - VIN 33 V, VOUT 13 V, 10–200 mA, with current limit, UVLO, and PFM - the LM25139 is an excellent fit. It directly supports wide VIN, precise current-mode control, user-programmable current limit, and advanced features for protecting the load. For similar range and robust performance, you can also consider TI’s LM25149 buck controllers, which offer comparable control and safety features for automotive and industrial DC-DC conversion.

    Thanks and regards

    naresh 

  • 0 in reply to Naresh Adepu
    TI__Guru* 76022 points

    Taras,

    You might also consider a converter or module for 200mA load, much easier implementation than a controller with external FETs for such low current. Do you need Q grade?

    Here is a possible converter option: LMR51403 42V/0.3A

    Regards,

    Tim