NCP1280DR2 데이터 시트보기 (PDF) - ON Semiconductor
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NCP1280DR2 Datasheet PDF : 18 Pages
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NCP1280
TYPICAL CHARACTERISTICS
7
6
fOSC = 440 kHz
VAUX = 12 V
DC [ 50%
5
fOSC = 300 kHz
4
3
fOSC = 87 kHz
2
1
0
−50 −25 0 25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
Figure 9. Operating Auxiliary Supply Current
versus Junction Temperature
160
4.0
3.5
OV THRESHOLD
3.0
2.5
2.0
1.5
UV THRESHOLD
1.0
0.5
0
−50 −25 0 25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
Figure 10. Line Under/Overvoltage Thresholds
versus Junction Temperature
600
150
140
OV HYSTERESIS
130
120
110
100
UV HYSTERESIS
90
−50 −25 0 25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
Figure 11. Line Under/Overvoltage Thresholds
Hysteresis versus Junction Temperature
120
115
VAUX = 12 V
110 Measured from VOH to 0.5 VOH
105
100
95
90
85
80
75
70
−50 −25 0 25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
Figure 13. Current Limit Propagation Delay
versus Junction Temperature
575
550
CYCLE SKIP
525
500
CYCLE BY CYCLE
475
450
425
400
−50 −25 0 25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
Figure 12. Current Limit Thresholds versus
Junction Temperature
450
400
RT = 68 kW
350
300
250
RT = 101 kW
200
RT = 220 kW
150
100
50
RT = 390 kW
0
−50 −25 0 25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
Figure 14. Oscillator Frequency versus
Junction Temperature
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