The devices are enabled by setting the EN pin to a logic HIGH. Accordingly, shutdown mode is forced if the EN pin is pulled LOW with a shutdown current of typically 0.7 μA.
In shutdown mode, the internal power switches as well as the entire control circuitry are turned off. An internal resistor of 260 Ω discharges the output through the VOS pin smoothly. The output discharge function also works when thermal shutdown, UVLO, or short-circuit protection are triggered.
An internal pulldown resistor of 400 kΩ is connected to the EN pin when the EN pin is LOW. The pulldown resistor is disconnected when the EN pin is HIGH.