NCP1234 ONSEMI [ON Semiconductor], NCP1234 Datasheet - Page 8

• Manufacturer Part Number: NCP1234
• Description: Fixed Frequency Current Mode Controller for Flyback Converters
• Manufacturer: ONSEMI [ON Semiconductor]

100
110
40.00
38.00
36.00
34.00
32.00
30.00
28.00
26.00
24.00
22.00
20.00
90
80
70
60
50
40
0.75
0.74
0.73
0.72
0.71
0.70
0.69
0.68
0.67
0.66
0.65
−50
−50
−50
Figure 5. Maximum Internal Current Setpoint
Figure 3. Minimum Current Source Operation
−25
Figure 7. Propagation Delay t
−25
−25
0
TEMPERATURE (C)
0
0
TEMPERATURE (C)
TEMPERATURE (C)
25
25
25
V
V
HV(min)
ILIM
TYPICAL PERFORMANCE CHARACTERISTICS
50
50
50
75
75
75
delay
100
100
100
http://onsemi.com
125
125
125
8
1.15
1.13
1.09
1.07
1.05
1.03
1.01
0.99
0.97
0.95
300
290
280
270
260
250
240
230
220
210
200
1.11
35
30
25
20
15
10
5
0
−50
−50
−50
Figure 8. Leading Edge Blanking Duration t
Figure 4. Off−State Leakage Current I
Figure 6. Threshold for Immediate Fault
−25
−25
−25
Protection Activation V
0
0
0
TEMPERATURE (C)
TEMPERATURE (C)
TEMPERATURE (C)
25
25
25
50
50
50
CS(stop)
75
75
75
start(off)
100
100
100
LEB
125
125
125