SLVUAP8A April 2016 – October 2021 TPS54202H
There is an internal 1-MΩ resistor from EN to GND thus EN can be floated to shut down the chip. To enable the chip, a pull-up resistor (range 200 kΩ to 1 MΩ, typical 510 kΩ) is connected between VIN and EN to limit the EN input current for light load efficiency improvement.