From: Denny Esterline <desterline@gmail.com>
To: Microcontroller discussion list - Public. <piclist@mit.edu>
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Date: Mon, 27 Apr 2020 10:34:30 -0700
Subject: Re: [EE] Voltage regulator with high input voltage
Thread-Topic: [EE] Voltage regulator with high input voltage
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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 side
> 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 which =
is
> nominally 36v but can rise to over 40 volts when fully charged.  Most sma=
ll
> linear regulators seem to be rated at 36v..
>
> Current would be a couple of milliamps with the display off (most of the
> 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*
> --
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