Super LED

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1、Module description: MY9221 a 12 channel (R / g / b x 4) support constant current LED driver chip built in gray scale adaptive pulse density intensity modulation, operating at 3.0 volts to 5.5 V input voltage range. MY9221 including has 12 complete very open road constant current sink into output, under 17 volts and the output of 60 Ma high precision degree of the electric current to each connecting led. Three groups of output current of MY9221 can be three external resistors set. MY9221 provide information / a unique maximum 10MHz can reduce electromagnetic interference of the clock input. 2、Function Description: Drive LED lamp. 3、Description of each function module:

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4、Components and PCB diagram before welding:

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5、Physical map after welding:

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6、Dynamic graph enter image description here



Super LED


ID Value Qty. Package Components Supplier SeeedStudio Manufacturer Part
1 MY9221 1 TSSOP24-0.65-7.8X4.4MM U1 SeeedStudio 310040023 MY9221
2 6.8K 3 3-0603 R1,R2,R3 SeeedStudio 301010198 RC0603FR-076K8L
3 10K 3 3-0603 R4,R5,R6 SeeedStudio 301010299 RC0603FR-0710KL
4 100nF 1 C-0603 C1 SeeedStudio 302010138 CC0603KRX7R9BB104
5 F185-1104A1BSYA1 1 H4-2.54 J1 SeeedStudio 320030017 F185-1104A1BSYA1
6 Red 12 LED2-2.54-D3.0MM D1,D2,D3,D4,D5,D6,D7,D8,D9,D10,D11,D12 SeeedStudio 304090041


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