BD35231 compatible replacement

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  • m4a2t0t
    Badcaps Veteran
    • Mar 2013
    • 279
    • USA

    #1

    BD35231 compatible replacement

    Anyone know of a compatible replacement that has an adjustable output? The BD35230 has a fixed output of 1.0V and would be acceptable but I cannot find it anywhere. There is also the BD3523 which has an adjustable output but its also nowhere to be found. I could probably source them from alibaba but I dont have that much time and I dont want to make a huge order.

    Or perhaps you know how the BD35231 can be modified to output 0.95-1.0V? The board does have empty pads for an adjustable IC but Ive only been able to make the output go up.

    Thanks for any help
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  • truclacicr
    Badcaps Veteran
    • Apr 2019
    • 326
    • australia

    #2
    Page 18 of the datasheet shows the internal feedback divider resistors. The FB voltage is 0.65V. Reducing the output voltage would involve adding an external resistor between VOS and FB. What is your target Vout? Is the resistor on pin #7 your own modification? What is the present Vout?

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