PWM (pulse width modulation), using simple digital pulse, repeatedly switch LED driver, the system only need to provide wide, narrow different digital pulse, can simply change the output current, so as to adjust the LED brightness. Advantages; Can provide high quality white light, simple application, high efficiency; Fatal flaw.
Yellow Green LED 7 Segment
0.60-inch 0.6" 1 Digit Single Display Common Cathode CC
5x7 Yellow LED Display Dot
Matrix 1.9mm Diameter 0.7 inch CA CC
Green 8x8 LED Matrix Display
Dot Diameter 4.8mm 1.9" Common Cathode
Yellow LED Seven Seg Display
1.8" 1.8 inch Single Digit 1 Common Cathode CC
Orange LED Display Seven Segment
0.32inch Single Digit 1 Common Anode CA
Yellow Green LED 7 Segment
0.56 inch 4 Digit Four Display Common Cathode CC
Orange Seven Segment LED Display
0.52 inch 0.52" Four Digit 4 Common Anode
Blue 7 Segment Display LED
7-Segment 0.36" 2-Digit Dual Common Anode CA
Green 7 Segment LED Display
0.28 inch Three Digit 3 7-seg CC CA
Red Ultra Bright LED 7
Segment Display 0.52 inch Dual Digit Common Anode CA
Therefore, the LED driving power supply should have the ability to inhibit the invasion of the surge and protect the LED from being damaged.Protection function: In addition to the conventional protection function of the power supply, it is best to increase the LED temperature negative feedback in the constant current output to prevent the LED temperature from being too high.
3031AB 7-segment
3031AB LED
3031BB Display
3031BB
Looking ahead to the next decade: Application tipping point reappearance, Mini/Micro starts its next 10 year cycle, LED technology upgrade is expected to come to a critical point again, opening the next 10-year cycle. Driven by Haitz's law, the size of LED chip required by the same brightness continues to shrink, and the minimum size available for mass production basically shows an exponential decline (FIG. 7). We believe that after 2010, the miniaturization of LED chip size is ushering in a new critical point. Promote the application of LED new leap. Take display applications, for example.
5032AB LED
5032AB 0.50 inch
5032BB 7-Segment
5032BB Display
