The TPS62173DSGR is a synchronous step-down (buck) converter from Texas Instruments that delivers a fixed 5 V output at up to 500 mA. Its DCS-Control™ topology combines fast transient response with a 2.25 MHz switching frequency.
Input range and load budget
The input voltage range spans 3 V to 17 V, covering 5 V, 9 V, 12 V, and intermediate bus rails without a separate pre-regulator. The 500 mA output current is the continuous rating — budget for the peak load of the 5 V rail plus derating at elevated ambient temperatures.