DRIVER CIRCUIT APPARATUS FOR AN LED STRING, LIGHT SOURCE APPARATUS AND INTEGRATED CIRCUIT

摘要

A driver circuit apparatus for light emitting diodes comprises a current mirror (212) that includes a first branch for coupling to a first string of light emitting diodes (202), and a second branch for coupling to a second string of light emitting diodes (204). The apparatus also comprises a voltage controlled current source (214) coupled to the current mirror (212).