Electronics > Projects, Designs, and Technical Stuff
Modern day 723 and 78xx for new design
tkamiya:
In old days, if one was making power supply, he/she used 723 or 78xx. But both of those series are quite dated. What's the modern day equivalent?
I need a low noise/ripple 24V 3A power supply.
Wolfgang:
I had the same question. All the "good" new ICs are for lower voltages. If you find a *real* replacement for a 723, please tell me ! (but dont forget, I need 40V input, 150mA, ...).
SiliconWizard:
Quite a few. Just to mention LT/AD: https://www.analog.com/en/parametricsearch/11536
Eg:
https://www.analog.com/en/products/lt1084.html
https://www.analog.com/en/products/adp7142.html
Now for those saying they are too pricy, go have a look at Alpha&Omega stuff. ;D
Wolfgang:
... not even close.
Where are the following 723 features:
- reference can be filtered
- long term drift spec
- settable current limit
- configurable compensation
- flexilibility to be used a spositive, negative, floating, ... regulator.
Why people still work with the 723 is:
- extremely flexible
- stable
- cheap like hell. 10€Cents in quantities, all "replacements" are some €.
iMo:
723 works as a switcher too..
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