[time-nuts] ULN regulator with more current capability than LT3042?

Gerhard Hoffmann dk4xp at arcor.de
Wed Mar 21 22:51:13 UTC 2018



Am 20.03.2018 um 10:09 schrieb Attila Kinali:
> Hoi Gerhard,
>
> On Sun, 18 Mar 2018 21:41:28 +0100
> Gerhard Hoffmann <dk4xp at arcor.de> wrote:
>
>> Use the LT3042 with an external power transistor, such as D44VH10G:
>>
>> <
>> https://www.flickr.com/photos/137684711@N07/29197476530/in/album-72157662535945536/
>>   >
>>
>> Performance is about the same as the LT3042 alone. That is exactly the
>> circuit from the data sheet
> Have you measured it's dynamic performance?
> I did some spice simulations some time ago and noticed that there are
> some load conditions where this circuit is very close to oscillation
> (ie load changes lead to heavy ringing)....of course, this is under
> the assumption that the spice model of the LT3042 is accurate in that
> regard.
No, I didn't. My oscillators are quite boring loads for a regulator.

regards, Gerhard




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