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NCP1212 Datasheet(PDF) 6 Page - ON Semiconductor

Part No. NCP1212
Description  Current Mode PWM Controller for Both Forward and Flyback Converters
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

NCP1212 Datasheet(HTML) 6 Page - ON Semiconductor

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NCP1212
http://onsemi.com
6
TYPICAL CHARACTERISTICS
−25
53
27
1
75
TJ, JUNCTION TEMPERATURE (°C)
95
TJ, JUNCTION TEMPERATURE (°C)
80
85
90
105
1.05
Figure 3. Oscillator Frequency with 48% Duty
Cycle vs. Junction Temperature
Figure 4. Oscillator Frequency with 82% Duty
Cycle vs. Junction Temperature
Figure 5. Frequency Change against Supply
Voltage vs. Junction Temperature
Figure 6. Maximum Current Sense Input
Threshold Voltage vs. Junction Temperature
TJ, JUNCTION TEMPERATURE (°C)
Figure 7. Propagation Delay vs. Junction
Temperature
TJ, JUNCTION TEMPERATURE (°C)
Figure 8. Leading Edge Blanking Time vs.
Junction Temperature
TJ, JUNCTION TEMPERATURE (°C)
1.15
0.9
1.2
79
70
50
100
60
80
90
0.1
0.04
0
0.12
TJ, JUNCTION TEMPERATURE (°C)
0.02
0.06
0.08
1.0
1.1
0.95
160
0
200
40
80
120
350
200
100
400
150
250
300
−25
53
27
1
105
79
−25
53
27
1
105
79
−25
53
27
1
105
79
−25
53
27
1
105
79
−25
53
27
1
105
79
DMAX = 48%
CT = 1 nF
VCC = 13V to 25V
DMAX = 82%
CT = 1 nF


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