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L6668 数据表(PDF) 9 Page - STMicroelectronics

部件名 L6668
功能描述  SMART PRIMARY CONTROLLER
PDF  23 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L6668 数据表(HTML) 9 Page - STMicroelectronics

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L6668
Figure 17. Oscillator frequency vs. Tj
Figure 18. Oscillator ramp vs. Tj
Figure 19. Current sense clamp vs. Tj
Figure 20. Disable level on current sense vs. Tj
Figure 21. Reference voltage vs. Tj
Figure 22. PFC_STOP open/low thresholds on
VCOMP vs. Tj
Tj (°C)
-50
0
50
100
150
99%
99.5%
100%
100.5%
101%
101.5%
102%
RT = 13.3 k
Ω
CT = 1 nF
fsw
Vcc = 9.4V
Vcc = 22V
Vcc = 15V
Values normalized to fsw @ Tj=25°C, Vcc=15V
Tj (°C)
Vpin14
(V)
-50
0
50
100
150
0.5
1.0
1.5
2.0
2.5
3.0
3.5
Vcc = 15 V
Peak
Valley
Tj (°C)
V ISENx (pin 12)
(V)
-50
0
50
100
150
0.6
0.7
0.8
0.9
1
Vcc = 15 V
VCOMP= Upper clamp
Tj (°C)
Vpin12
(V)
-50
0
50
100
150
1.0
1.2
1.4
1.6
1.8
2.0
Vcc = 15 V
Tj (°C)
VREF
(V)
-50
0
50
100
150
4.9
4.95
5
5.05
5.1
Vcc = 15 V
(pin 8)
Tj (°C)
VCOMP
(V)
-50
0
50
100
150
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
Vcc = 15 V
(pin 10)
PFC_STOP low (voltage rising)
PFC_STOP open (voltage falling)



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