A brief explanation on the analog based LDO regulators
Firstly, the question relates to analog electronic engineering but appears to have been incorrectly categorised under 'Formal Social Control'.
A good introduction to linear voltage regulators can be found here:
https://www.mouser.com/pdfdocs/linear_reg_basic_appli-e.pdf
('LDO' in the term 'analog LDO regulator' is an acronym for 'Low Drop Out', which refers to a specific property that some linear voltage regulators are advertised as having. This is further explained in the article in the link given above.)
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