• Conversion input voltage range: 3 V to 28 V

• VDD input voltage range: 4.5 V to 25V

• Output voltage range: 0.6 V to 5.5 V

• Wide output load range: 0 A to > 20 A

• Built-in 0.6-V (±0.8%)reference

• Built-in LDO linear voltage regulator

• Auto-skipEco-Mode? for light-loadefficiency

• D-CAP? mode with 100-ns load-stepresponse

• Adaptive ON-time control architecture with8 selectable frequency settings

• 4700ppm/°C RDS(on) currentsensing

• 0.7-ms, 1.4-ms, 2.8-ms and 5.6-ms selectable internal voltage servosoft start

• Pre-charged start-up capability

• Built-in outputdischarge

• Open-drain power-good output

• Integrated boostswitch

• Built-In OVP/UVP/OCP

• Thermal shutdown (non-latch)

• 3-mm × 3-mm QFN, 16-Pin (RGT) package

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The TPS53219A device is a small-sized single buck controller with adaptive ON-time D-CAPmode control. The device is suitable for low output voltage, high current, PC system power rail andsimilar point-of-load (POL) power supplies in digital consumer products. The small package andminimal pin-count save space on the PCB, while the dedicated EN pin and pre-set frequencyselections simplify the power supply design. The skip mode at light load conditions, strong gatedrivers, and low-side FET RDS(on) current sensing supports low-loss and highefficiency, over a broad load range. The conversion input voltage (high-side FET drain voltage)range is between 4.5 V and 25 V, and the output voltage range is between 0.6 V and 5.5 V. TheTPS53219A is available in a 16-pin, QFN package specified from –40°C to +85°C.