NCP1031 ON, NCP1031 Datasheet - Page 9

• Manufacturer Part Number: NCP1031
• Description: Low Power PWM Controller with On-Chip Power Switch and Startup Circuits for 48V Telecom Systems
• Manufacturer: ON

2.600
2.575
2.550
2.525
2.500
2.475
2.450
2.425
2.400
2.375
2.350
1000
77.0
76.5
76.0
75.5
75.0
74.5
74.0
73.5
73.0
72.5
72.0
900
800
700
600
500
400
300
200
100
0
−50
−50
0
Figure 16. Line Under/Overvoltage Thresholds
V
Figure 20. Maximum Duty Cycle vs. Junction
CC
Figure 18. Oscillator Frequency vs. Timing
−25
−25
= 12 V
200
T
T
J
J
, JUNCTION TEMPERATURE ( C)
, JUNCTION TEMPERATURE ( C)
vs. Junction Temperature
C
0
0
T
, TIMING CAPACITOR (pF)
f
f
OSC
OSC
25
Temperature
25
400
= 1000 kHz
= 200 kHz
Capacitor
50
50
600
75
75
TYPICAL CHARACTERISTICS
100
100
V
T
800
J
CC
NCP1030, NCP1031
= 25 C
= 12 V
125
125
http://onsemi.com
150
1000
150
9
1000
1100
900
800
700
600
500
400
300
200
100
220
210
200
190
180
170
160
150
140
130
120
8
7
6
5
4
3
2
1
0
−50
−50
−50
Figure 21. Power Switch Circuit On Resistance
Figure 17. Line Under/Overvoltage Hysteresis
Figure 19. Oscillator Frequency vs. Junction
V
I
−25
D
−25
−25
CC
= 100 mA
= 12 V
T
T
T
J
J
J
, JUNCTION TEMPERATURE ( C)
, JUNCTION TEMPERATURE ( C)
vs. Junction Temperature
, JUNCTION TEMPERATURE ( C)
0
0
0
vs. Junction Temperature
C
C
C
T
T
25
T
25
25
= 1000 pF
= 220 pF
Temperature
= 47 pF
50
50
50
75
75
75
NCP1030
NCP1031
100
100
100
V
CC
125
125
125
= 12 V
150
150
150