Re: [EE] looking for negative 5V regulator or circuit

On Tue, June 10, 2025 12:17 pm, Isaac Marino Bavaresco wrote:
> The project is battery powered and it seems that you are worried about
> power consumption, then I would suggest a switching regulator.
>
> The power savings with the switching regulator will be even greater than
> saving the quiescent power of the linear regulator.
>
> Your message is not clear but I infer that you already have a negative
> power source, because you were already considering the 7905, but if you do
> not have the negative voltage, you could use a flyback switching converter
> and produce the negative voltage directly from the +12 V.

There are also charge pump voltage inverters like
https://www.analog.com/media/en/technical-documentation/data-sheets/adp5600.pdf
. There are also charge pump voltage splitters as described at
https://www.analog.com/en/resources/technical-articles/properties-of-the-chargepump-voltage-splitter.html
.

Harold
https://w6iwi.org




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