The purpose of the discharge function is to make sure of a defined down-ramp of the output voltage when the device is disabled and keep the output voltage close to 0V when the device is off. The output discharge feature is only active after the TPSM8281x has been enabled at least once since the supply voltage was applied. The discharge function is enabled as soon as the device is disabled, in thermal shutdown, or in undervoltage lockout. The minimum supply voltage required for the discharge function to remain active is typically 1V.