參數(shù)資料
型號(hào)： PS2602L
廠商： NEC Corp.
英文描述： Optocoupler Applications
中文描述： 光耦應(yīng)用
文件頁(yè)數(shù)： 20/38頁(yè)
文件大小： 223K
代理商： PS2602L
19
A design example of an optocoupler circuit that operates for at least ten years is shown below (using Fig. 3-3, 4-2 and 4-3). The
major causes of CTR reduction area as follows:
(From Fig. 3-3)
CTR-relative-value vs. R
BE
characteristics
15% down (with respect to initial value, R
BE
=
×
)
(From Fig. 4-2)
CTR change with time (10 years, Ta = 60
°
C)
40% down (with respect to initial value, 0 year)
(From Fig. 4-3)
CTR-relative-value vs. ambient-temperature characteristics
(Ta = 60
°
C)
15% down (with respect to initial value t
a
= 25
°
C)
Considering the above characteristics and safety factor = 2 (twice margin), the recommended CTR is:
21.6 x 1.4 x 1.15 x 1.15 x 2 = 80%.................(15)
(Reference)
Accordingly, the CTR value including reduction of CTR by time elapse, temperature change, and insertion of R
BE
must be 21.6 %
or more.
I
F
= 5 mA
T
A
= 25
C
I
F
= 20 mA
T
A
= 25
C
I
F
= 5 mA
T
A
= 60
C
Normalized to CTR
test conditon
I
F
= 5 mA, V
CE
= 5V
10
1.2
1.0
0.8
0.6
0.4
0.2
0
0
10
10
10
2
3
4
5
Time (Hr)
Figure 4-2. Change of CTR with
Time (PS2601)
C
Ambient Temperature T
A
(
°
C)
Figure 4-3. CTR-Relative-Value vs.
T
A
Characteristics
C
Normalized to 100
at T
A
= 25
C
I
F
= 5 mA, V
CE
= 5 V
1.2
1.0
0.8
0.6
0.4
0.2
0
-55 -40
-20
20
40
60
80
100
0
相關(guān)PDF資料
PDF描述
PS2605 Optocoupler Applications
PS2605L Optocoupler Applications
PS2606 Optocoupler Applications
PS2606L Optocoupler Applications
PS2607 Optocoupler Applications
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PS2602LK-E3 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:NPN-OUTPUT DC-INPUT OPTOCOUPLER
PS2602LK-E4 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:NPN-OUTPUT DC-INPUT OPTOCOUPLER
PS2602LL-E3 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:NPN-OUTPUT DC-INPUT OPTOCOUPLER
PS2602LL-E4 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:NPN-OUTPUT DC-INPUT OPTOCOUPLER
PS2602LM-E3 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:NPN-OUTPUT DC-INPUT OPTOCOUPLER
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