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PDF ST2221A Data sheet ( Hoja de datos )
| Número de pieza | ST2221A | |
| Descripción | 8-Bit CONSTANT CURRENT LED DRIVERS | |
| Fabricantes | SiTI | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ST2221A (archivo pdf) en la parte inferior de esta página. Total 17 Páginas | ||
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ST2221A
Version
Issue Date
File Name
Total Pages
: A.036
: 2006/2/9
: SP-ST2221A-A.036
: 17
8-Bit CONSTANT CURRENT LED DRIVERS
新竹市科學園區展業一路 9 號 7 樓之 1
SILICON TOUCH TECHNOLOGY INC.
9-7F-1, Prosperity Road I, Science Based Industrial Park,
Hsin-Chu, Taiwan 300, R.O.C.
Tel：886-3-5645656 Fax：886-3-5645626
1 page  
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
Equivalent Circuit of Inputs and Outputs
1. ENABLE terminal
VDD
ENABLE
RIN(up)
GND
3. CLOCK, SERIAL-IN terminal
VDD
2. LATCH terminal
VDD
LATCH
RIN(down)
GND
4. SERIAL-OUT terminal
VDD
ST2221A
CLOCK,
SERIAL-IN
GND
8th LATCH
DATA
GND
SERIAL-OUT
8-BIT CONSTANT CURRENT LED DRIVERS
Version:A.036
Page: 4
5 Page 
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
ST2221A
Iout - Duty Cycle (DIP)
100
80
Vo=0.45(V)
60 Vo=0.70(V)
Vo=0.95(V)
40
Vdd=5V
20 Tj=140°C(Max)
8bit Active
Ta=25°C
0
0 20
40 60
Duty Cycle (%)
80
100
Iout - Duty Cycle (DIP)
100
80
60
40
Vo=0.45(V)
Vo=0.70(V)
Vo=0.95(V)
20 Vdd=5V
Tj=140°C(Max)
8bit Active
Ta=85°C
0
0 20
40
60
Duty Cycle (%)
80
100
1.6
1.4 DIP
1.2
SOP
1
SSOP
0.8
0.6
0.4
0.2
0
0
Ta - Pd
50 100
Ambient Temperature Ta
150
Iout - Duty Cycle (DIP)
100
80
Vo=0.45(V)
60 Vo=0.70(V)
Vo=0.95(V)
40
Vdd=5V
20 Tj=140°C(Max)
8bit Active
Ta=60°C
0
0 20
40
60
Duty Cycle (%)
80
100
100
90
80
70
60
50
40
30
20
10
0
100
Rext - Iout
Iout = { 1.23 (V) / Rext (ohm) } * 14.45
Vo=0.70(V)
1000
Rext (Ohm)
10000
8-BIT CONSTANT CURRENT LED DRIVERS
Version:A.036
Page: 10
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet ST2221A.PDF ] | |
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