IL74 Datasheet, PDF (3/4 Pages) Siemens Semiconductor Group – PHOTOTRANSISTOR OPTOCOUPLER

Figure 5. Normalized non-saturated and saturated CTR
at T_A=85°C versus LED current
1.5
Normalized to:
Vce = 10V, IF = 10mA, Ta = 25°C
CTRce(sat) Vce = 0.4V
1.0
0.5
0.0
.1
Ta = 85°C
NCTR(SAT)
NCTR
1
10
100
IF - LED Current - mA
Figure 9. Collector base photocurrent versus LED
current
1000
100
Ta = 25°C
Icb = 1.0357 *IF ^1.3631
10
1
.1
.01
.1
1
10
100
IF - LED Current - mA
Figure 6. Collector-emitter current versus temperature
and LED current
35
30
25
20
15
10
5
0
0
50°C
25°C
85°C
70°C
10 20 30 40 50 60
IF - LED Current - mA
Figure 7. Collector-emitter leakage current versus
temperature
g
p
105
10 ⁴
10 ³
10 ²
10 ¹
Vce = 10V
10 ⁰
TYPICAL
10 ^-1
10
-2
-20
0 20 40 60 80 100
Ta - Ambient Temperature - °C
Figure 10. Normalized photocurrent versus If and
temperature
10
Normalized to:
If = 10ma, Ta = 25°C
1
.1
NIB-Ta=-20°C
NIb,Ta=25°C
NIb,Ta=50°C
NIb,Ta=70°C
.01
.1
1
10
100
If LED Current mA
Figure 11. Normalized non-saturated HFE versus
base current and temperature
1.2
70°C
Normalized to:
50°C
Ib = 20µA
1.0
25°C
Vce = 10 V
Ta = 25°C
0.8
-20°C
0.6
0.4
1
10
100
Ib - Base Current - µA
1000
Figure 8. Normalized CTRcb versus LED current
and temperature
1.5
Normalized to:
IF =10 mA
Vcb = 9.3 V
1.0
Ta = 25°C
0.5
25°C
50°C
70°C
0.0
.1
1
10
100
IF - LED Current - mA
Figure 12. Normalized saturated HFE versus base
current and temperature
1.5
70°C _50°C
1.0
25°C
Normalized to:
Vce = 10V
Ib = 20µA
Ta = 25°C
-20°C
0.5
Vce = 0.4V
0.0
1
10
100
Ib - Base Current - (µA)
1000
IL/ILD/ILQ74
5–3