The Great Search: 3.3V LDO with 20V+ Input Voltage #TheGreatSearch #digikey @DigiKey @adafruit

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Published on ● Video Link: https://www.youtube.com/watch?v=H_0Kua2UZCs


Duration: 12:39
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This weekend we whipped up a quick FUSB302 (https://www.digikey.com/en/products/detail/onsemi/FUSB302MPX/5844455) breakout that will allow USB Type C sink power negotiation. Basically, we can plug into a USB hub or wall wart that can provide up to 20V and request that much voltage. This could be really handy for audio or robotics projects that need 9V, 12V, 15V or 20V without the fuss of finding a matching DC adapter.

Now that we've got the chip, the datasheet lets us know that we need a separate, external 3.3V-ish regulator to supply power to the chip. Let's go looking for an LDO that can handle 5V-20V in, and provide 3.3V and at least 100mA, along the way we'll also check that we have voltage-rated components and also chat about LDO versus buck converters for this use case.

See the chosen chip on Digi-Key at https://www.digikey.com/short/j3jtz4zm



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