ST2225A Datasheet, PDF (9/12 Pages) List of Unclassifed Manufacturers – LED DISPLAY DRIVER

點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
ST2225A
CLOCK
DATA
LOAD
(INTERNAL)
RESET
1
START BIT 1
36 ³⁷
BIT 34 BIT 35
Figure 5 Input Data Format
Output Current v.s. Number of Segments
180
160
Vout = 1V
140
Ta = 85℃
120
Vout = 1.5V
100
Vout = 2V
80
60
40
20
0
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34
Figure 6 Number of Segments
Vout v.s. ILED
3.00
Ta = 85℃
Tj = 150℃ (max.)
2.50
20 SEGM
2.00
30 SEGM
1.50
1.00
35 SEGM
0.50
0.00
5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35
Figure 7 ILED (mA)
Power dissipation v.s. Temperature
2.0
1.8
35 Segments
Vout = 1V
1.6
15 mA/Segment
1.4
1.2
1.0
0.8
Safe Operating
Area
0.6
0.4
0.2
0.0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85
Figure 8 Temp('C)
LED Display Driver
-8-
Version：A.025