VB408 -- constant current source

VB408 Guest 2011-03-27 18:49 #2121235

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Hi,
can the VB408 voltage regulator ( 
http://www.datasheetcatalog.org/datasheet/SGSThomsonMicroelectronics/mXttvuy.pdf 
) be used as a constant current source as shown in the picture (provided 
Iout<40mA)?

Attached files:

vb408_const-curr.png (1.4 KB)

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HildeK Guest 2011-03-27 19:18 #2121282

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I've never used this regulator, but with a coarse view of the data sheet 
I think this will be possible - within a range between 1.2mA and 40mA.

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VB408 Guest 2011-03-27 19:52 #2121349

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Thanks, that's exactly what I had been hoping for. Guess I'll give it a 
shot.

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VB408 Guest 2011-03-28 11:08 #2121945

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It passed the smoke test and appears to work.
BTW: The VB408 is no longer in production, but I had a couple stashed 
away. The only other high voltage regulator I know of that is still in 
production is the LR8, but that one is limited to 20mA.

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Desolate Man Guest 2011-03-28 11:38 #2121976

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This is an action like pigs feed with pearls!

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VB408 Guest 2011-03-28 14:02 #2122203

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> This is an action like pigs feed with pearls!
You are very welcome. I hope you enjoyed your meal.

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Desolate Man Guest 2011-03-28 15:26 #2122326

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Thus reacts somebody who stands no truth - with insults!

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