Voltage Regulator - 5V (COM-00107)

This is a placeholder topic for “Voltage Regulator - 5V” comments.

This is the basic L7805 voltage regulator, a three-terminal positive regulator with a 5V fixed output voltage. This fixed regulator provides a local regulation, internal current limiting, thermal shut-down control, and safe area protection for your project. Each one of these voltage regulators can output a max current of 1.5A.

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I’m just wondering what the maximum current draw of this item would be?


Hi Arielle,

These have a max current of 1.5A

Thanks a lot Stephen!


If you need to get more current out of one of these, you can use figure 22 -23 from the datasheet to turn this into a high current regulator you will just need a high current Transistor and a few other components.

Hi Clinton,

I’m just doing a power budget at the moment so all good but thank you regardless! :slight_smile:

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Personally I’ve cut back on 7805’s and other linear voltage regulators in favour of the switching type (usually Polulu). Many of my projects rely on battery supply and the wasted power from using linear regulators was too much for me.


Switching Supplies are probably the prefered option in most cases though I have heard they can be a little noisy in some applications. The rational is that due to the square wave output of the PWM it has a lot of frequencies contained in it so you get a lot more resonances.

True but a noise filter between the regulated voltage and circuit will usually fix that … but both definitely have their place!