The MAX15053EWL+T is a 2A step-down (buck) switching regulator in a 9-WLP (1.5x1.5 mm) package — effectively a 9-bump wafer-level chip-scale package with no plastic overmold.
Temperature grade and sourcing posture
Analog Devices lists the part as Active with ROHS3 compliance. The laser-etched date-code and package marking should be verified against Analog Devices' factory format — the 9-WLP marking is small enough that a re-mark is visually detectable under 10× magnification.
