Here's another take on a similar theme. I've built a few of these: https://www.maximintegrated.com/en/design/technical-documents/app-notes/4/4434.html https://

Here's another take on a similar theme. I've built a few of these: https://www.maximintegrated.com/en/design/technical-documents/app-notes/4/4434.html https://www.maximintegrated.com/en/design/technical-document... In my case, I was looking for a way to get decent analog power from a USB port for a non audio related project, but a LiPo battery would present a similar challenge.