Hello. I need to drive few LEDs for a flash application. I need to drive 3 LEDs at 1A, from a 24V input voltage. What are the important parameters ? Which solution would you recommend ?
If the LED’s are in parallel then current balancing between LED’s and Dimming would be 2 important controlled parameters. Another important parameter would be Over-voltage protection for an Open LED condition since the power supply will be controlled current source. Is this application for a LED Flashlight? Where is the 24V Source derived from? Are these 3 LED’s in parallel or in series?
Also I would consider the LED current Accuracy, Quiescent current and Standby current of the regulator as important if the input source is a battery.