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參數資料
| 型號： | DM134B |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | LED驅動器 |
| 英文描述： | 16 BIT CONSTANT CURRENT LED DRIVERS WITH 3.3V-5V SUPPLY VOLTAGE |
| 中文描述： | 16位恒流LED驅動與3.3V - 5V供電電壓 |
| 文件頁數： | 13/19頁 |
| 文件大小： | 255K |
| 代理商： | DM134B |
DM134B
、
DM135B
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
16-Bit Constant Current LED Drivers
-
12
-
Version
：
A.001
Preliminary
Note
As the power dissipation of a semiconductor chip is limited by its package and ambient
temperature, this device requires a maximum output current given by an operating condition.
The maximum allowable power consumption (Pd (max)) of this device is calculated as
follows:
(max)
e)
temperatur
(junction
(Tj
)
(max)(
Watt
Pd
=
)
/
(
Rth
)
)(
emperature
(ambient t
Watt
Ta
-
C
°
C
°
Based on the Pd (max), the maximum allowable current can be calculated as follows:
Iout = ( Pd – V
DD
I
DD
) / ( # outputs
Vo
Duty )
Imax - Ta ( DM
1
35 )
0.00
1
0.00
20.00
30.00
40.00
50.00
60.00
0
20
40
60
80
1
00
1
20
1
40
1
60
Ta
I
Imax - Ta ( DM
1
34 )
0.00
1
0.00
20.00
30.00
40.00
50.00
60.00
70.00
80.00
90.00
1
00.00
0
20
40
60
80
1
00
1
20
1
40
1
60
Ta
I
Pd - Ta
0.00
0.50
1
.00
1
.50
2.00
2.50
3.00
3.50
0
20
40
60
80
1
00
1
20
1
40
1
60
Ta
P
Vdd = 5V
Vdd = 5V
DIP
QFN
SSOP
DIP
QFN
SSOP
SSOP
QFN
DIP
SOP
SOP
SOP
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