NCP1288 查看數據表（PDF） - ON Semiconductor

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NCP1288

Fixed Frequency Current Mode Controller for Flyback Converters

ON Semiconductor 

NCP1288

TYPICAL PERFORMANCE CHARACTERISTICS

1.80

1.75

1.70

1.65

1.60 VFB(OPC)

1.55

1.50

1.45

1.40 VFB(OPCE)

1.35

1.30

1.25

1.20

1.15

1.10

−50 −25 0 25 50 75 100 125 150

TJ, JUNCTION TEMPERATURE (°C)

Figure 22. OPC FB Thresholds vs. Junction

Temperature

41

40

39

38

37

36

35

34

33

32

31

30

−50 −25 0 25 50 75 100 125 150

TJ, JUNCTION TEMPERATURE (°C)

Figure 23. OPC Watchdog Time Thresholds vs.

Junction Temperature

5.00

4.98

4.96

4.94

4.92

4.90

4.88

4.86

4.84

−50 −25 0 25 50 75 100 125 150

TJ, JUNCTION TEMPERATURE (°C)

Figure 24. FB to CS Ratio vs. Junction

Temperature

5.6

5.5

5.4

5.3

5.2

5.1

5.0

4.9

4.8

4.7

4.6

4.5

4.4

4.3

−50 −25 0 25 50 75 100 125 150

TJ, JUNCTION TEMPERATURE (°C)

Figure 26. FB Pull−up Voltage vs. Junction

Temperature

27

26

25

24

23

22

21

20

19

18

17

16

15

−50 −25 0 25 50 75 100 125 150

TJ, JUNCTION TEMPERATURE (°C)

Figure 25. FB Pull−up Resistor vs. Junction

Temperature

96

94

92

90

88

86

84

82

80

78

76

−50 −25 0 25 50 75 100 125 150

TJ, JUNCTION TEMPERATURE (°C)

Figure 27. Overload Timer Duration vs. Junction

Temperature

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