Microchip MIC2920A-3.3WS-TR, 1 Low Dropout Voltage, Voltage Regulator 400mA, 3.3 V 3-Pin, SOT-223

The MIC2920A family are "bulletproof" efficient voltage regulators with very low dropout voltage (typically 40mV at light loads and 370mV at 250mA), and very low quiescent current (140μA typical). The quiescent current of the MIC2920A increases only slightly in dropout, prolonging battery life.

High output voltage accuracy
Guaranteed 400mA output
Low quiescent current
Low dropout voltage
Extremely tight load and line regulation
Very low temperature coefficient
Current and thermal limiting
Input withstands -20V reverse battery and +60V positive transients
Error flag warns of output dropout
Logic-controlled electronic shutdown
Output programmable from 1.24V to 26V (MIC29202/MIC29204)
Available in TO-220, TO-220-5, and surface-mount TO-263-5, SOT-223, and SO-8 packages.