The TPS53319DQPR from Texas Instruments is an adjustable step-down (buck) DC-DC switching regulator Integrated Circuit rated at 14 A, in a 22-SON package.
The TPS53319DQPT from Texas Instruments is a buck switching regulator Integrated Circuit with a positive adjustable 0.6 V output, 1 output rated 14 A, in a 22-PowerLFDFN package.