ZCC7331S is adjustable light LED constant current drive, it worked with quasi resonant mode, with high efficiency, it USES the primary side adjustment way to accurately adjust output current and the need for secondary side of the shunt regulator and photoelectric coupler, the less the number of system components, low cost, save the plate space,

ZCC7331S support used analog dimming signal for operation, its output current available DIM terminal of PWM signal on duty ratio adjusted or average,

ZCC7331S has many protection function to ensure the products with strong, open circuit protection, including LED, LED a short circuit protection, output diodes short circuit protection, VDD under-voltage lockout protection, VDD over-voltage protection, overload protection, under-voltage input/over-voltage protection, internal overheating protection and current limit protection by cycle,