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LM27341-Q1: Schematic Review Request

Kenneth Du
Genius 14295 points
Part Number: LM27341-Q1
Other Parts Discussed in Thread: LM27341

Hi,

I am currently working on a design and I want to use LM27341-Q1 to generate 6.5V rail to drive LEDs.

Here are some requirements:

Input: 9-18V; Output: 6.5V@1A Max.

I have designed the schematic as following:

Please let me know if you have any suggestions about above schematic.

Thanks.

Kenneth

  • 0
    TI__Expert 4100 points

    Hello Kenneth,

    Following comments on your schematic:

    1. for proper functionality you will need to add a diode in addition to C15 on your schematic. This diode in connection with C15 should generate gate drive voltage for internal N MOS switch. See device datasheet for various methods of generating the gate drive voltage.
    3. Increase inductance value . Suggested  value is 22uH

    I would recommend using webench online design tool to verify design assumptions and solutions.

    Hope this helps.

    Best regards

    Brani