TI's LED drivers are further widely supported by reference designs and demo boards. The demonstration circuit for the LM3402 shown here is designed to drive a string of 12 InGaN LEDs (Vf total about 40V) at a forward current of 360 mA +-3% with a peak-to-peak ripple current of 40 mA or less. The input is 48V +-2% and the switching frequency is 200 kHz +-10%. Additional LED reference designs, currently only 50, are available through the TI LED reference library.