A light source system comprising: a light source; a semiconductor die comprising a first surface on which the light source is mounted; a first driver coupled to the light source; characterized in that the first driver comprises: a first transistor that is integrated in the semiconductor die and is configured to control supply of a first drive current to the light source for controlling operation of the light source; a turn-on pre-driver configured to turn on the first transistor by applying a turn-on signal to the gate/base terminal of the first transistor in order to transition the first driver from a charging state to an emission state; a turn-off pre-driver configured to turn off the first transistor by apply a turn-off signal to the gate/base terminal of the first transistor in order to transition the first driver from the emission state to the charging state; and a first capacitor for storing electrical energy for use in generating the first drive current, wherein in the emission state the first capacitor discharges to generate the first drive current and the first switch is configured to close a first drive current circuit to carry the first drive current between the first driver and the light source, and wherein in the charging state the first capacitor stores charge received from a power supply and the first switch is configured to open the first drive current circuit to stop supply of the first drive current to the light source. a light source; a semiconductor die comprising a first surface on which the light source is mounted; a first driver coupled to the light source; characterized in that the first driver comprises: a first transistor that is integrated in the semiconductor die and is configured to control supply of a first drive current to the light source for controlling operation of the light source; a turn-on pre-driver configured to turn on the first transistor by applying a turn-on signal to the gate/base terminal of the first transistor in order to transition the first driver from a charging state to an emission state; a turn-off pre-driver configured to turn off the first transistor by apply a turn-off signal to the gate/base terminal of the first transistor in order to transition the first driver from the emission state to the charging state; and a first capacitor for storing electrical energy for use in generating the first drive current, a first transistor that is integrated in the semiconductor die and is configured to control supply of a first drive current to the light source for controlling operation of the light source; a turn-on pre-driver configured to turn on the first transistor by applying a turn-on signal to the gate/base terminal of the first transistor in order to transition the first driver from a charging state to an emission state; a turn-off pre-driver configured to turn off the first transistor by apply a turn-off signal to the gate/base terminal of the first transistor in order to transition the first driver from the emission state to the charging state; and a first capacitor for storing electrical energy for use in generating the first drive current, wherein in the emission state the first capacitor discharges to generate the first drive current and the first switch is configured to close a first drive current circuit to carry the first drive current between the first driver and the light source, and wherein in the charging state the first capacitor stores charge received from a power supply and the first switch is configured to open the first drive current circuit to stop supply of the first drive current to the light source.