AN290非常低压降稳压器，提催供应链整体绩效 APPLICATION NOTE VERY LOW DROP REGULATORS ENHANCE SUPPLY PERFORMANCE By Paolo ANTONIAZZI and Arturo WOLFSGRUBER Standard three-terminal voltage regulator ICs use developed two 5V low drop voltage regulators that an NPN transistor as the series pass element, so the use a new vertical PNP transistor structure to obtain input-output voltage drop is 1.5V-2V. Low dropout low dropout and low quiescent current. regulators using lateral PNP pass transistors have Type L4940 delivers up to 1.5A and offers an input- been available fo……