NCP1031 ON, NCP1031 Datasheet - Page 8

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

145
140
135
130
125
120
105
100
115
110
10.5
10.0
11.0
20.0
19.5
19.0
18.5
18.0
17.5
17.0
16.5
16.0
15.5
15.0
95
9.5
9.0
8.5
8.0
7.5
7.0
6.5
6.0
−50
−50
−50
Figure 14. COMP Source Current vs. Junction
Figure 10. Supply Voltage Thresholds vs.
−25
−25
Figure 12. Minimum Startup Voltage vs.
−25
T
T
Minimum Operating Threshold
T
J
J
, JUNCTION TEMPERATURE ( C)
J
, JUNCTION TEMPERATURE ( C)
0
, JUNCTION TEMPERATURE ( C)
0
0
Junction Temperature
Junction Temperature
Startup Threshold
25
25
25
Temperature
50
50
50
V
I
75
START
75
CC
75
= V
V
V
V
CC
COMP
FB
100
TYPICAL CHARACTERISTICS
= 0.5 mA
100
100
CC(on)
= 2.3 V
= 12 V
NCP1030, NCP1031
= 2.5 V
125 150
125
− 0.2 V
125
http://onsemi.com
150
150
8
6.80
6.75
6.70
6.65
6.60
6.55
6.50
6.45
6.40
6.35
6.30
2.70
2.65
2.60
2.55
2.50
2.45
2.40
2.35
2.30
2.25
2.20
840
790
740
690
640
590
540
490
440
390
340
−50
−50
−50
Figure 11. Undervoltage Lockout Threshold
Figure 15. COMP Sink Current vs. Junction
Figure 13. Reference Voltage vs. Junction
−25
−25
−25
T
T
T
J
J
J
, JUNCTION TEMPERATURE ( C)
, JUNCTION TEMPERATURE ( C)
, JUNCTION TEMPERATURE ( C)
vs. Junction Temperature
0
0
0
25
25
Temperature
25
Temperature
50
50
50
75
75
75
V
V
V
V
CC
COMP
FB
100
100
100
CC
= 2.7 V
= 12 V
= 12 V
= 2.5 V
125
125
125 150
150
150