NCP1246 ONSEMI [ON Semiconductor], NCP1246 Datasheet - Page 9

• Manufacturer Part Number: NCP1246
• Description: Fixed Frequency Current Mode Controller for Flyback Converters
• Manufacturer: ONSEMI [ON Semiconductor]

1.09
1.03
0.97
0.75
0.74
0.73
0.72
0.71
0.70
0.69
0.68
0.67
0.66
0.65
1.15
1.13
1.11
1.07
1.05
1.01
0.99
0.95
300
290
280
270
260
250
240
230
220
210
200
ï50
ï50
ï50
Figure 9. Maximum Internal Current Setpoint
Figure 13. Leading Edge Blanking Duaration
Figure 11. Threshold for Immediate Fault
ï25
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Protection Activation V
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
25
25
25
V
t
LEB
ILIM
50
50
50
CS(stop)
75
75
75
TYPICAL CHARACTERISTIC
100
100
100
http://onsemi.com
NCP1246
125
125
125
9
310
308
306
304
302
300
298
296
294
292
290
110
100
130
125
120
105
100
115
110
90
80
70
60
50
40
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ï50
ï50
Figure 10. Frozen Current Setpoint V
Compensating Current I
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Figure 12. Propagation Delay t
Figure 14. Maximum Overpower
the Light Load Operation
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
of CS Pin
25
25
25
OPC(365)
50
50
50
75
75
75
Flowing Out
delay
I(freeze)
100
100
100
for
125
125
125