AN290非常低压降稳压器，提催供应链整体绩效

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