The device has an output discharge function that ensures a defined ramp down of the output voltage when the device is disabled and keeps the output voltage close to 0 V while the device is off. The output discharge function is enabled when DISCHEN = 1 in the CONTROL1 register. The output discharge function is enabled by default.
If enabled, the device discharges the output under the following conditions:
The output discharge function is not available until the user has enabled the device at least once after power up. During power down, the device continues to discharge the output for as long as the internal supply voltage is greater than approximately 1.8 V.
In the following device variants, which do not have I2C, the output discharge function is permanently enabled: