Part Number: LM3405A
When using LM3405A, my input voltage is "3.8V - 4.2V", and the If and Vf of the loaded LEDs are: 100mA 1.61V, 200mA 1.88V, 300mA 2.14V, 400mA 2.40V. I want to parallel two LEDs, and R1 uses 0.2 ohm to make the output current 1Amax…