From: David VanHorn <microbrix@gmail.com>
To: Microcontroller discussion list - Public. <piclist@mit.edu>
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Date: Mon, 27 Apr 2020 10:35:23 -0700
Subject: Re: [EE] Voltage regulator with high input voltage
Thread-Topic: [EE] Voltage regulator with high input voltage
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A buck switcher would be the way to go.  Input protection from transients
might need to be added.

On Mon, Apr 27, 2020, 11:33 AM Denny Esterline <desterline@gmail.com> wrote=
:

> It's a bit "long in the tooth" but I typically use the LM2576HV for such.
> 3A @ 60V input is a bit more than you'll need, but...
>
> Since you're doing a one-off, a PCB module might be something to consider=
..
> Here's a $5 example https://www.ebay.com/i/303534088139
> Though I'm certain there are many, many more out there.
>
> -Denny
>
>
> On Mon, Apr 27, 2020 at 10:26 AM David C Brown <dcb.home@gmail.com> wrote=
:
>
> > I am designing a current monitor for my e-bike.  Using an INA169 hi sid=
e
> > current senor into a mid range PIC with a two digit LED display.
> >
> > Problem is getting the 5 volts for the PIC from the e bike battery whic=
h
> is
> > nominally 36v but can rise to over 40 volts when fully charged.  Most
> small
> > linear regulators seem to be rated at 36v..
> >
> > Current would be a couple of milliamps with the display off (most of th=
e
> > time).  Nearer 100 with the display on..
> >
> > Any suggestions
> >
> >
> > __________________________________________
> > David C Brown
> > 43 Bings Road
> > Whaley Bridge
> > High Peak                           Phone: 01663 733236
> > Derbyshire                eMail: dcb.home@gmail.com
> > SK23 7ND          web: www.bings-knowle.co.uk/dcb
> > <http://www.jb.man.ac.uk/~dcb>
> >
> >
> >
> > *Sent from my etch-a-sketch*
> > --
> > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
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> >
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