Step-down regulator with 3 A capability for point-of-load rails
The Maxim MAX1623EAP+ is a synchronous buck regulator delivering up to 3 A from a 4.5 V to 5.5 V input rail, with an adjustable output ranging from 1.1 V up to 3.8 V. It integrates the synchronous rectifier, so no external Schottky diode is needed, and the switching frequency runs up to 350 kHz — a practical balance between inductor size and switching loss for point-of-load conversion in industrial and telecom equipment.
The 20-SSOP (0.209" body width, 5.30 mm wide) is a standard surface-mount footprint with a pitch that suits manual rework and automated assembly alike.
No replacement or second-source part is listed in the official record, but the part is current-production and available through independent distribution. The ROHS3 compliance means it meets the latest EU restriction levels, including exemptions for lead in high-temperature solders.