Sujet : Re: Power from another source fed to 1117 regulator output pin
De : blockedofcourse (at) *nospam* foo.invalid (Don Y)
Groupes : sci.electronics.designDate : 30. Sep 2024, 13:21:28
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <vde54a$27tr9$1@dont-email.me>
References : 1
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On 9/30/2024 4:37 AM, Pimpom wrote:
I've been looking at the schematic of a popular product that has two options as the power source. One source is a Vin point (pin or DC jack) that goes to a 1117-5V regulator, the other is a USB port. The USB +5V line joins the 1117 output via a Schottky diode.
Does this mean that the 1117 has no problem with this arrangement - that is, with power coming from another source to its output pin?
Short the LDO's input to GND and consider how it will (mis)behave.
Re: Power from another source fed to 1117 regulator output pin
Re: Power from another source fed to 1117 regulator output pin
