LED driver refers to the power adjustment electronic device that drives the LED to emit light or the LED module components to work normally. Due to the conduction characteristics of LED PN junction Q, it can adapt to a very narrow range of power supply voltage and current fluctuations. A slight deviation may prevent the LED from lighting up, severely reduce luminous efficiency, shorten its service life, or even burn out the chip. The current power supply and common battery power supply are not suitable for directly supplying LEDs. LED drivers are electronic components that can drive LEDs to operate at the optimal voltage or current state.