ld7575b Leadtrend Technology, ld7575b Datasheet - Page 7

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

Leadtrend Technology Corporation
LD7575B-DS-00 May 2008
62
6.6
6.4
6.2
6
5.8
5.6
5.4
5.2
5.0
70
68
66
64
60
.
80
78
76
74
72
70
0
11
-40
-
40
12
Fig. 11 V
-20
-
20
Fig. 9 Max Duty vs. Temperature
14
0
0
COMP
Fig. 7 Frequency vs. Vcc
Temperature ( ° C)
16
20
20
open loop voltage vs. Temperature
Temperature ( ° C)
Vcc (V)
40
40
18
60
60
20
80
80
22
100
100
24
120
120
25
7
6.0
5.5
5.0
4.5
4.0
3.5
35
30
25
20
15
10
25
23
21
19
17
15
11
-40
-40
12
Fig. 12 OLP-Trip Level vs. Temperature
Fig. 8 Green mode frequency vs. Vcc
Fig. 10 VCC OVP vs. Temperature
14
0
0
16
Temperature ( ° C)
Temperature ( ° C)
Vcc (V)
40
40
18
LD7575B
20
80
80
22
120 125
120 125
24
25