ld7575b Leadtrend Technology, ld7575b Datasheet - Page 6

• Manufacturer Part Number: ld7575b
• Description: Green-mode Pwm Controller With High-voltage Start-up Circuit
• Manufacturer: Leadtrend Technology

Typical Performance Characteristics
Leadtrend Technology Corporation
LD7575B-DS-00 May 2008
Fig. 1 HV Current Source vs. Temperature (HV=500V, Vcc=0V)
1.5
1.3
1.1
0.9
0.7
17. 5
17. 0
16. 5
16. 0
15. 5
15. 0
14. 5
14. 0
13. 5
70
68
66
64
62
60
58
-40
- 40
-40
-
20
-20
Fig. 3 UVLO (on) vs. Temperature
Fig. 5 Frequency vs. Temperature
0
0
0
20
Temperature (°C)
Temperature (°C)
Temperature (°C)
20
40
40
40
60
60
80
80
100
80
120
100
120 125
140
120
6
0.90
0.88
0.86
0.84
0.82
0.80
10. 8
10. 6
10. 4
10. 2
10. 0
9.6
9.8
9.4
9.2
9.0
8.8
24
23
22
2
20
19
18
16
1
-40
-40
- 40
Fig. 6 Green Mode Frequency vs. Temperature
-
20
-20
-
20
Fig. 2 V
Fig. 4 UVLO (off ) vs. Temperature
0
0
0
20
Temperature (°C)
SEN SE
20
20
Temperature (°C)
Temperature (°C)
40
(off) vs. Temperature
40
40
60
LD7575B
60
60
80
80
100
80
120
100
100
140
120
120