All circuits required for LED driving are integrated into a single package. The BP5843 module features: 120VAC power supply operation (input voltage is 113V to 170VDC), constant current output (optimal for LED driving), temperature stability (±1% from -20ºC to 80ºC), and high efficiency (85%). The constant current output value of 250mA to 350mA can be set using a single resistor.