temperature drift

This refers to the variation in output of a power supply circuit due to changes in ambient temperature. Typically, the output at the maximum and minimum specified temperatures is measured and compared to the output at room temperature. In some cases, the change in output per 1°C variation in ambient temperature is expressed as a percentage. For stable output, smaller temperature drift is preferable. Initial drift, which refers to the output variation that occurs from power-on until the internal components reach their continuous operating temperature, is also considered a type of temperature drift.