ld7522 Leadtrend Technology, ld7522 Datasheet - Page 8

• Manufacturer Part Number: ld7522
• Description: Smart Green-mode Pwm Controller With Multiple Protections
• Manufacturer: Leadtrend Technology

Leadtrend Technology Corporation
LD7522-DS-03 January 2008
30
20
10
40
6.0
5.8
5.6
5.4
5.2
5.0
85
80
75
70
65
60
0
-40
-40
-40
Fig. 11 V
Fig. 7
Fig. 9 Startup Current vs. Temperature
Max Duty Cycle vs. Temperature
0
0
0
COMP
Temperature (°C)
Temperature (°C)
open-loop voltage vs. Temperature
Temperature (°C)
40
40
40
www.leadtrend.com.tw
80
80
80
120
120
120
8
2.55
2.40
2.60
2.50
2.45
5.3
5.1
4.9
4.7
4.5
5.5
0.90
0.85
0.80
0.75
0.70
0.65
0.60
-40
-40
-40
Fig. 10 OVP-Trip Level vs. Temperature
Fig. 12 OLP-Trip Level vs. Temperature
Fig. 8 Vcs (off) vs. Temperature
0
0
0
Temperature (°C)
Temperature (°C)
Temperature (°C)
40
40
40
V
LD7522
V
LINE
V
LINE
LINE
80
80
=3.75V
80
=1.25V
= 0V
120
120
120