NCP1246 ONSEMI [ON Semiconductor], NCP1246 Datasheet - Page 8

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

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40
38
36
34
32
30
28
26
24
22
20
50
45
40
35
30
25
20
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Figure 3. Minimum Current Source Operation
Figure 5. OffïMode HV Supply Current I
Figure 7. Brownïout Device Start Threshold
ï25
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I
I
HV(off)
HV(off)
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
@ V
@ V
V
25
25
25
V
HV(start)
HV
HV
HV(min)
= 325 V
= 141 V
50
50
50
75
75
75
TYPICAL CHARACTERISTIC
100
100
100
http://onsemi.com
HV(off)
NCP1246
125
125
125
8
120
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110
108
106
104
102
100
8.8
8.7
8.6
8.5
8.4
8.3
8.2
8.1
32
30
28
26
24
22
20
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Figure 4. OffïState Leakage Current I
Figure 8. Brownïout Device Stop Threshold
Figure 6. High Voltage Startup Current
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Flowing Out of V
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
25
V
25
25
HV(stop)
50
CC
50
50
Pin I
75
75
75
start2
start(off)
100
100
100
125
125
125