A display driver includes an adjustment unit 20 that outputs an electronic volume value based on a detected temperature derived using a temperature sensor 90, a power supply circuit 60 that supplies a drive power supply voltage based on the electronic volume value, and a drive circuit that drives a display panel based on the drive power supply voltage. The adjustment unit 20 outputs a first electronic volume value that sets the drive power supply voltage to a first voltage, in the case where the detected temperature belongs to a first temperature range, outputs a second electronic volume value that sets the drive power supply voltage to a second voltage, in the case where the detected temperature belongs to a second temperature range, and an interpolated electronic volume value that sets the drive power supply voltage to an interpolated voltage that is between the first voltage and the second voltage, in the case where the temperature range to which the detected temperature belongs switches from the first temperature range to the second temperature range.