For instance, to drive a power LED with current rating of
350 mA, a driver would be specifically designed in order to
deliver the desired output current. As for LED with current
rating of 700 mA, a different driver is needed to drive.
Following this method, in order to use LEDs of different
ratings, one needs to have separate drivers for each that can
drive respective required current. This process results in
additional cost and complexity in design