The complete MAX619 circuit fits into less than 0.1in2 of board space because it requires only four external capacitors: two 0.22 F flying capacitors, and 10 F capacitors at the input and output. Low operating supply current (150 A max) and low shutdown supply current (1A max) make this device ideal for small, portable, and battery-powered applications. When shut down, the load is disconnected from the input.