Part Number : TPS53219A
Function : Wide Input Voltage, Eco-mode, Single Synchronous Step-Down Controller
Package : QFN 16 Pin type
Maker : Texas Instruments
Pinouts : 
Description :
The TPS53219A is a small-sized single buck controller with adaptive on-time D-CAP mode control. The device is suitable for low output voltage, high current, PC system power rail and similar point-of-load (POL) power supplies in digital consumer products.
The small package and minimal pin-count save space on the PCB, while the dedicated EN pin and pre-set frequency selections simplify the power supply design.
Official Homepage : https://www.ti.com/product/TPS53219A
Datasheet PDF Download : 
Others datasheet of same file : 3219A, TPS53219, TPS53219ARGTR, TPS53219ARGTT