NCP1246 ONSEMI [ON Semiconductor], NCP1246 Datasheet - Page 10

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

2.65
2.60
2.55
2.50
2.45
2.40
2.35
105
100
110
24
23
22
21
20
19
18
17
16
15
95
90
85
80
75
70
ï50
ï50
ï50
Latch Pin, Allowing Direct NTC Connection
Figure 15. FB Pin Internal Pullïup Resistor
Figure 17. Latch Pin High Threshold V
Figure 19. Current I
ï25
ï25
ï25
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
25
25
25
R
FB(up)
NTC
50
50
50
Sourced from the
75
75
75
TYPICAL CHARACTERISTIC
100
100
100
OVP
http://onsemi.com
NCP1246
125
125
125
10
5.20
5.15
5.10
5.05
5.00
4.95
4.90
4.85
4.80
4.75
4.70
0.85
0.84
0.83
0.82
0.81
0.80
0.79
0.78
0.77
0.76
0.75
220
210
200
190
180
170
160
150
140
ï50
ï50
ï50
Figure 20. Current I
Figure 18. Latch Pin Low Threshold V
Figure 16. FB Pin Open Voltage V
ï25
ï25
ï25
the Latch Pin, During SoftïStart
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
25
25
25
NTC(SSTART)
50
50
50
Sourced from
75
75
75
FB(ref)
100
100
100
OTP
125
125
125