What this part is and where it fits
The Maxim Integrated MAX738ACWE+T is a step-down (buck) switching regulator that delivers a fixed 5V output at up to 750 mA from an input rail between 6V and 16V. Switching at 160 kHz, it uses an external diode and inductor — no synchronous rectifier inside, so the bill of materials includes a Schottky catch diode. The 16-SOIC wide-body package (7.50 mm width) suits medium-density boards where a TO-220 or D2PAK would be overkill. Temperature range is commercial: 0°C to 70°C, which covers office equipment, benchtop instruments, and indoor power supplies but not an engine bay or rooftop enclosure.
What the ratings mean for the BOM
The 750 mA output current is the continuous rating. The 160 kHz switching frequency calls for a larger inductor than a higher-frequency part.
Lifecycle and sourcing posture
The MAX738ACWE+T carries an Active product status, so there is no last-time-buy clock ticking. It is ROHS3 compliant, which clears the REACH and RoHS paperwork for EU-bound builds. The part is available through independent distribution; current pricing and stock levels are confirmed at quote time against an RFQ.