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by kevin_thibedeau
1154 days ago
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They are not. They are inherently high dropout devices which is why LDOs were created in the first place. LDOs are a refinement on those early generation of linear regulators. The rise of 3.3V devices created a demand to derive regulated power from a 5V rail. Traditional linear regulators are unsuitable for this because the dropout voltage is in the range of 2V. LM317, the most likely old school variable output candidate, is 3V drop and can't do the job either. |
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