NCP1280_05 ONSEMI [ON Semiconductor], NCP1280_05 Datasheet - Page 7

• Manufacturer Part Number: NCP1280_05
• Description: Active Clamp Voltage Mode PWM Controller for Off-Line Applications
• Manufacturer: ONSEMI [ON Semiconductor]

12
10
11
9
8
7
6
5
−50
17.0
16.5
16.0
15.5
15.0
14.5
14.0
13.5
13.0
50
45
40
35
30
25
20
15
10
5
0
Figure 3. Auxiliary Supply Voltage Thresholds
0
0
−25
Figure 7. Startup Circuit Off−State Leakage
V
AUX
100
Figure 5. Startup Circuit Output Current
T
versus Junction Temperature
= 12 V
J
V
, JUNCTION TEMPERATURE ( C)
2
AUX
versus Auxiliary Supply Voltage
0
200
Current versus Line Voltage
, AUXILIARY SUPPLY VOLTAGE (V)
V
300
25
in
, LINE VOLTAGE (V)
4
T
T
T
400
J
J
J
50
= −40 C
= 125 C
= 25 C
6
THRESHOLD
THRESHOLD
500
OPERATING
STARTUP
MINIMUM
75
600
100
8
TYPICAL CHARACTERISTICS
700
V
125
in
10
= 82 V
http://onsemi.com
800 900
150
NCP1280
12
7
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
19
18
17
16
15
14
13
12
10
20
16
12
11
9
8
4
0
0
−50
−50
0
V
Figure 8. Auxiliary Supply Current versus
−25
AUX
−25
Figure 4. Startup Circuit Output Current
Figure 6. Startup Circuit Output Current
100
= V
T
T
versus Junction Temperature
J
J
AUX(on)
, JUNCTION TEMPERATURE ( C)
, JUNCTION TEMPERATURE ( C)
0
0
200
Junction Temperature
V
versus Line Voltage
in
, LINE VOLTAGE (V)
− 0.2 V
25
25
300
50
50
V
V
400
V
UV/OV
EA
AUX
75
75
= 0 V
= V
V
= 0 V
AUX
500
AUX(on)
V
T
100
100
T
V
T
AUX
J
J
in
= 0 V
J
= 125 C
= −40 C
= 25 C
= 82 V
= 12 V
600
− 0.2 V
125
125
150
150
700