The VF voltage of LED light source for lighting is very low, generally 2.75~3.8V, and the IF is generally 15~1400mA. Therefore, the output voltage of LED driver IC is VFxN or VFx1, and IF keeps a constant current of 15~1400mA. There are two kinds of LED light sources used in LED lamps: low power (IF is 15~20mA) and high power (IF is greater than 200mA). Low-power LEDs are mostly used to make LED fluorescent lamps, decorative lamps, grid lamps and so on.

High-power LED is used for home lighting, spotlight, underwater lamp, wall washing lamp, street lamp, tunnel lamp, automobile working lamp, etc.High-power LED is used for home lighting, spotlight, underwater lamp, wall washing lamp, street lamp, tunnel lamp, automobile working lamp, etc.