Now you can’t just hook up the 22 ohm resistor to a 5V power supply for the sake of keeping it on — that would draw 1.1watts and get very hot!

The parts has four synchronous buck converters with outputs of 1A, 1A, 500mA, and 500mA, one synchronous 1A boost DC-DC, and one 1A buck-boost DC-DC, all powered from a 2.7V to 5.5V input.