NCP1050, NCP1051, NCP1052, NCP1053, NCP1054, NCP1055
1.02
1.00
8.6
STARTUP
THRESHOLD
8.4
8.2
8.0
7.8
7.6
V
CC(on)
0.98
0.96
0.94
0.92
MINIMUM
OPERATING
THRESHOLD
V
CC(off)
0.90
0.88
7.4
7.2
−50 −25
0
25
50
75
100
125 150
−50 −25
0
25
50
75
100
125 150
TEMPERATURE (°C)
TEMPERATURE (°C)
Figure 17. Normalized Peak Current Limit
versus Temperature
Figure 18. Supply Voltage Thresholds versus
Temperature
8
7
6
5
4
3
2
4.56
4.54
4.52
4.50
4.48
4.46
4.44
4.42
4.40
4.38
V
= 0 V
CC
V
= 8.3 V
CC
V
= 20 V
PIN 5
1
0
4.36
4.34
−50 −25
0
25
50
75
100
125 150
−50 −25
0
25
50
75
100
125 150
TEMPERATURE (°C)
TEMPERATURE (°C)
Figure 19. Undervoltage Lockout Threshold
versus Temperature
Figure 20. Start Current versus Temperature
7
6
5
4
3
2
1
8
6
4
2
V
= 0 V
CC
V
= 8 V
CC
T = 25°C
PIN 5
J
V
= 20 V
0
T = 25°C
J
0
0
−2
1
2
3
4
5
6
7
8
9
1
10
100
1000
SUPPLY VOLTAGE (V)
PIN 5 VOLTAGE (V)
Figure 21. Startup Current versus Supply
Voltage
Figure 22. Startup Current versus Pin 5
Voltage
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