From: David Strumpf <davidcou@aol.com>
To: "piclist@mit.edu" <piclist@mit.edu>
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Date: Wed, 4 Mar 2020 15:49:41 -0800
Subject: Re: Re: [OT] Adjustable regulator down to 0V
Thread-Topic: Re: [OT] Adjustable regulator down to 0V
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Thank you Harold. This sounds intriguing!
I will read the datasheet now as I was looking for something like this earl=
ier this week and did not know of this part.
David Strumpf(573) 268-7870


-----Original Message-----
From: Harold Hallikainen <harold@mai.hallikainen.org>
To: Microcontroller discussion list - Public. <piclist@mit.edu>
Sent: Wed, Mar 4, 2020 05:45 PM
Subject: Re: [OT] Adjustable regulator down to 0V


Have a look at
https://www.analog.com/media/en/technical-documentation/data-sheets/3083fa.=
pdf
and similar parts. It uses a reference current instead of reference
voltage. You add an external resistor to set the output voltage. The
output voltage is the same as the voltage across that resistor. Since you
can make it zero ohms, the output can go all the way to 0V. Also, the
devices can be paralleled for higher current.

I always thought the reference current idea was very clever.

Harold



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