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  • Inexpensive, linear buck drivers

    posted by chimo on 01/19/2008

    Involvement:Expert (understands the inner workings) - Ownership:more than 1 month


    -Can disable/remove 1 or 2 of the 7135s if a lower current is desired
    -Thermal protection works


    -one of the boards had a mis-alligned 7135 soldered on

    -contact pads could be better marked


    Since this was a 10-pack, I tried pushing a board to its thermal limits by running it at full load and a varying input voltage to test how far it could be pushed. The thermal shutdown kicked in, and the 7135s shut down until they cooled enough to restart. The cycle was repeated.

    Thisis not recommended for an implementation method, but it's good to know the thermal regulation works.


    A good value

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