Size:1.7*1cm Package:1pcs/bagged Working voltage: DC 2.8-6V (for 3V 3.3V 3.7V 4.5V 5V 6V LED driver) Output current: 30-1500MA Maximum output power: 9W Can drive 1-16 2.8-6V leds (Maximum current does not exceed 1.5A) Current regulation: 1 through adjustable resistance; 2 Control chip temperature regulation through PWM signal