ST2226A SiTi, ST2226A Datasheet - Page 18

• Manufacturer Part Number: ST2226A
• Description: PWM-Controlled Constant Current Driver
• Manufacturer: SiTi

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4) Power Rating
5) Advantages for application
please refer to the following Figure 9.
in MODE 1 operation, the frame rate is 60Hz, DCLK & GCLK both run at 10MHz. We
can shift in (1/60Hz)/(1/10MHz)=167K bits per frame. One channel takes 10 bits, thus
167K/10=16.7K channels (single color pixels). For two dimension display, we take the
square root of 16.7K pixels, which equals 129. The resolution, in this case is 129*129.
We can round the data a little bit, and we can construct a 128*128 image by
connecting 1024 driver ICs. (1,024 EA drivers*16 channels 16,384 bit).
ST2226A
For the relationship between power dissipation and operating temperature,
To understand what the advantages over ON-OFF type drivers, we assume that
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點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
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點晶科技股份有限公司
Figure 9. Power Dissipation vs. Operating Temperature
3.5
2.5
1.5
0.5
4
3
2
1
0
0
50
Ta (F ree-A ir Tem perature) - C
S D IP
Version ： ： ： ： A.010
100
S O P
≒
150
Q F N
Page ： ： ： ： 17
ST2226A
200