ncp1282 ON Semiconductor, ncp1282 Datasheet - Page 9

• Manufacturer Part Number: ncp1282
• Description: High-performance Active Clamp/reset Pwm Controller Featuring Hv Start-up
• Manufacturer: ON Semiconductor

10
3.2
3.1
3.0
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.0
9
8
7
6
5
4
3
2
1
0
75
70
65
60
55
50
45
40
35
30
25
-50
-50
-50
Figure 9. Line Under/Overvoltage Thresholds
-25
-25
-25
Figure 7. Auxiliary Supply Current
V
T
UVOV
T
Figure 11. UVOV Offset Current
J
T
V
, JUNCTION TEMPERATURE (°C)
J
0
J
vs. Junction Temperature
, JUNCTION TEMPERATURE (°C)
UVOV
, JUNCTION TEMPERATURE (°C)
0
vs. Junction Temperature
vs. Junction Temperature
0
= 2.3 V, C
UNDERVOLTAGE
OVERVOLTAGE
V
= 2.3 V, V
25
UVOV
25
25
= 0 V
out1
50
50
EA
50
= C
= 0 V
out2
75
75
75
= 100 pF
V
V
V
100
AUX
AUX
UVOV
100
100
= 12 V
= 12 V
= 2.8 V
125
125
125
http://onsemi.com
150
NCP1282
150
150
9
50
45
40
35
30
25
20
15
10
8.0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
150
140
130
120
100
110
5
0
60
90
80
70
50
-50
10
-50
Figure 10. Line Under/Overvoltage Hysteresis
Figure 8. Supply Current vs. Supply Voltage
11
-25
-25
Figure 12. FF Discharge Current
12
V
T
AUX
J
T
, JUNCTION TEMPERATURE (°C)
J
0
vs. Junction Temperature
, JUNCTION TEMPERATURE (°C)
0
, POWER SUPPLY VOLTAGE (V)
vs. Junction Temperature
13
25
UNDERVOLTAGE
14
25
OVERVOLTAGE
50
15
50
V
T
f
C
OSC
16
in
J
out1
75
= 25°C
= 48 V
75
[ 230 kHz
= C
17
V
V
V
100
out2
CC
SS
FF
100
18
= 0.5 V
= 100 pF
= 12 V
= 0 V
125
125
19
150
150
20