L6668 Просмотр технического описания (PDF) - STMicroelectronics
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L6668 Datasheet PDF : 23 Pages
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L6668
Figure 11. Start-up & UVLO vs. Tj
VCC (pin 5)
(V) 14
ON
13
OFF while
latched off
12
11
10
9
OFF
8
-50
0
50
100
150
Tj (°C)
Figure 12. Vcc Zener voltage vs. Tj
VccZ (pin 5)
(V) 26
25
24
23
22
21
20
-50
0
50
100
150
Tj (°C)
Figure 13. COMP voltage upper clamp level vs. Tj
VCOMP(pin 10)
7
(V)
Vcc = 15 V
6.5
6
5.5
Figure 14. COMP source current vs. Tj
ICOMP(pin 10)
140%
Vcc = 15 V
VCOMP= 1 V
120%
100%
80%
Values normalized to CI OMP @ 25°C
60%
-50
0
50
100
150
Tj (°C)
Figure 15. COMP dynamic resistance vs. Tj
RCOMP (pin 10)
(kΩ)32
30
28
26
24
22
Vcc = 15 V
20
18
-50
0
50
100
150
Tj (°C)
Figure 16. Max. duty-cycle vs. Tj
(%)
75
Vcc = 15 V
74
73
72
71
5
-50
0
50
100
150
Tj (°C)
70
-50
0
50
100 150
Tj (°C)
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