NCP1246 ONSEMI [ON Semiconductor], NCP1246 Datasheet - Page 13

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

13.0
12.8
12.6
12.4
12.2
12.0
11.8
11.6
11.4
11.2
11.0
9.4
9.2
9.0
8.8
8.6
8.4
8.2
8.0
2.0
1.9
1.9
1.8
1.8
1.7
1.7
ï50
ï50
ï50
Figure 37. Internal Current Consumption when
Figure 33. V
Going Up HV Current Source Stop Threshold
Figure 35. V
ï25
ï25
ï25
CC
DRV Pin is Unloaded
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
0
0
0
CC
I
CC1(65kHz)
Turnïon Threshold Level, V
Turnïoff Threshold (UVLO)
I
CC1(100kHz)
25
25
V
25
V
CC(off)
CC(on)
50
50
50
75
75
75
TYPICAL CHARACTERISTIC
100
100
100
http://onsemi.com
CC
NCP1246
125
125
125
13
11.5
11.3
11.1
10.9
10.7
10.5
10.3
10.1
9.9
9.7
9.5
7.3
7.2
7.1
7.0
6.9
6.8
6.7
6.6
6.5
6.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
ï50
ï50
ï50
Figure 38. Internal Current Consumption when
Figure 36. V
ï25
Figure 34. HV Current Source Restart
ï25
ï25
Internal Logic Resets V
DRV Pin is Loaded by 1 nF
CC
I
I
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
CC1(100kHz)
TEMPERATURE (°C)
CC1(65kHz)
Threshold V
Decreasing Level at Which the
25
25
25
50
50
50
CC(min)
CC(reset)
75
75
75
100
100
100
125
125
125