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TI’s LED drivers are widely supported by reference designs and demo boards. The demonstration circuit for the LM3402 above is designed to drive a string of twelve InGaN LEDs (Vf total about 40 V) at a forward current of 360 mA, +-3%, with a peak-to-peak ripple current of 40 mA or less. The input is 48 V, +-2%. Switching frequency is 200 kHz, +-10%.
PTM Published on: 2015-06-12
