Regulators low dropout

Blog Entry 4 The best way to do this is to put in a low dropout linear regulator on the output. Set the Boost regulator output for 12.5-12.7V, and then use an LDO to drop your voltage to 12 V. 

Determine which type of voltage regulator is best suited for the appHcation of interest, based on the descriptions given previously. For example, negative, variable output, low dropout voltage, etc. 

Low dropout voltage Refers to a class of voltage regulators designed to operate at especially low input-output voltage differentials. 

In some applications (e.g. battery powered portable electronic equipment), we may want the output rail to remain well-regulated even if the input voltage dips very low — say down to within 0.6 V or less of the set output level Vo- In such cases, the minimum possible headroom (or dropout ) achievable by the linear regulator stage may become an issue. 

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