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180
160
BO = 2 V
140
120
100
80
60
40
−25
0
25
TEMPERATURE (°C)
Figure 23. Pin 9 Current vs. Temperature
(@ V
= 0.5 V) (NCP1239F)
pin9
0.920
0.915
0.910
0.905
0.900
0.895
0.890
0.890
0.885
0.880
−25
0
25
TEMPERATURE (°C)
Figure 25. Maximum Current Setpoint vs.
Temperature
780
770
760
750
740
730
720
710
700
−25
0
25
TEMPERATURE (°C)
Figure 27. Default Feedback Level for Normal
Operation Recovery
TYPICAL PERFORMANCE CHARACTERISTICS
BO = 1 V
50
75
100
50
75
100
50
75
100
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NCP1239
0.508
0.506
0.504
0.502
0.500
0.498
0.496
0.494
0.492
125
−25
0
Figure 24. Over Power Limitation Threshold vs.
450
445
440
435
430
425
420
415
410
125
−25
0
Figure 26. Default Feedback Threshold for
Standby Detection vs. Temperature
0.510
0.505
0.500
0.495
0.490
0.485
0.480
125
−25
0
Figure 28. Brown−Out Upper Threshold vs.
12
25
50
75
TEMPERATURE (°C)
Temperature (NCP1239F)
25
50
75
TEMPERATURE (°C)
25
50
75
TEMPERATURE (°C)
Temperature
100
125
100
125
100
125
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