Then eight in series is 26.4V, which is higher than the LED input voltage. Therefore, booster type constant current source should be used. However, in order to reduce the current to 100mA, the forward voltage at this time is only 2.8V, and the eight series are 22.4V, and the load voltage becomes lower than the supply voltage. Thus the booster type constant current source will not work at all and the step-down type should be used instead. For a boost type of constant current source must work in the buck is not good, and finally LED will appear flashing phenomenon. In fact, as long as the boost type constant current source is used, when the forward current is dimmed at very low brightness, flicker will almost certainly occur. At that time, the LED load voltage must be lower than the power supply voltage.

Common-Cathode CC 3202AW 7-Segment digit 3202AW LED Common-Anode CA 3202BW Display 3202BW 0.30 inch
Common-Cathode CC CL3022AW 7-Segment digit CL3022AW LED Common-Anode CA CL3022BW Display CL3022BW 0.30 inch

LED load voltage must be lower
LED brightness low-key with reduced voltage
Different LEDs with current and output curves
The working ratio change LED brightness
LED heat dissipation technology
LED lamp work is stable
Heat management with high brightness LED
Heat dissipation for highlight LED
LED device to extract heat from P-N junction
LED Lamp surface radiation heat treatment