I am trying to calculate max current draw for SMD 5050 LED strip. Datasheet says that 1 channel draws 20mA. So I do the calculations: 20mA * 300leds * 3channels = 18A
I already have the same strip with power supply (12V 5A) and it is working fine when all channels are high (white). If it would be 18A, wouldn't it burn? I don't understand what am I doing wrong in the calculations. :( Could anyone help please?
LED Datasheet: https://www.google.com/url?sa=t&source=web&rct=j&url=https://e-radionica.com/productdata/RGB5050LED.pdf&ved=2ahUKEwj8yvCTr87oAhXhoosKHRDqCvAQFjALegQIAxAB&usg=AOvVaw3B5Ja9lwTl9we5GdXwR4Gp
Strip Datasheet: https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.iled.com/class/INNOVAEditor/assets/gallery2/5100-5105.pdf&ved=2ahUKEwjC163XwM7oAhWys4sKHS7FDw8QFjALegQIBBAC&usg=AOvVaw3dRnzlhi1q8HrHmk2auw3g