1 Features

1• Conversion input voltage range: 3 V to 28 V

• VDD input voltage range: 4.5 V to 25 V

• 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-skip Eco-Mode™ for light-load efficiency

• D-CAP™ mode with 100-ns load-step response

• Adaptive ON-time control architecture with 8

selectable frequency settings

• 4700ppm/°C RDS(on) current sensing

• 0.7-ms, 1.4-ms, 2.8-ms and 5.6-ms selectable

internal voltage servo soft start

• Pre-charged start-up capability

• Built-in output discharge

• Open-drain power-good output

• Integrated boost switch

• Built-In OVP/UVP/OCP

• Thermal shutdown (non-latch)

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

2 Applications

• Storage computers

• Server computers

• Multi-function printers

• Embedded computing

3 Description

The TPS53219A device 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 pointof-

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. The skip mode at light load conditions,

strong gate drivers, and low-side FET RDS(on) current

sensing supports low-loss and high efficiency, over a

broad load range. The conversion input voltage (highside

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. The TPS53219A is available in a 16-pin,

QFN package specified from –40°C to +85°C.