[TriEmbed] Powering ESP32 from an 8v golf cart battery

Carl Nobile carl.nobile at gmail.com
Sun Nov 15 19:59:06 CST 2020


You could just use an L7805. There is a TO192 package for this that can
supply, I think, up to 100ma. If that's not enough current then use the
TO220 package it can handle up to 1.5A.
~Carl

On Sun, Nov 15, 2020 at 8:08 PM The MacDougals via TriEmbed <
triembed at triembed.org> wrote:

> Can’t find ams1117-3.3  TI’s L1117-3.3 is a direct replacement.
>
>
>
> The data sheet shows 15v (max) for Vin and nothing for min.  What am I
> missing?
>
> https://www.ti.com/lit/ds/symlink/lm1117.pdf
> <https://www.ti.com/lit/ds/symlink/lm1117.pdf?HQS=TI-null-null-digikeymode-df-pf-null-wwe&ts=1605410881526>
>
>
>
> ---> Paul
>
>
>
>
>
> *From:* Josh Wyatt <dragojdw at gmail.com>
> *Sent:* Sunday, November 15, 2020 7:47 PM
> *To:* paulmacd at acm.org
> *Cc:* TriEmbed <triembed at triembed.org>
> *Subject:* Re: [TriEmbed] Powering ESP32 from an 8v golf cart battery
>
>
>
> Why not use something like AMS1117-3.3? Minimum voltage on your 8 volt
> battery is going to be something like 6VDC.
>
>
>
> -j
>
>
>
> On Sun, Nov 15, 2020 at 7:38 PM The MacDougals via TriEmbed <
> triembed at triembed.org> wrote:
>
> How do I find an LDO that operates on 8 – 8.8 v?
>
> I looked at a couple of datasheets and found linear regulators that take
> 9v (max) input.
>
> I did not see a (min) spec for input v.
>
>
>
> How can I tell if it works at 8?
>
>
>
> For example:
>
> https://www.njr.com/electronic_device/PDF/NJM2888_E.pdf
>
>
>
>
>
> ---> Paul
>
>
>
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-- 
-------------------------------------------------------------------------------
Carl J. Nobile (Software Engineer)
carl.nobile at gmail.com
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