
LM2576
http://onsemi.com
13
ET
,
VOL
TAGE
TIME
(V
s)μ
100
80
90
3.0
2.5
1.5
0.8
0.5
0.4
0.6
1.0
2.0
5.0
60
40
20
15
10
8.0
7.0
6.0
MAXIMUM
INPUT
VOL
TAGE
(V)
MAXIMUM
INPUT
VOL
TAGE
(V)
IL, MAXIMUM LOAD CURRENT (A)
MAXIMUM
INPUT
VOL
TAGE
(V)
IL, MAXIMUM LOAD CURRENT (A)
MAXIMUM
INPUT
VOL
TAGE
(V)
Figure 18. LM25763.3
IL, MAXIMUM LOAD CURRENT (A)
Figure 19. LM25765
L680
Figure 20. LM257612
Figure 21. LM257615
Figure 22. LM2576ADJ
LM2576 Series Buck Regulator Design Procedures (continued)
Indicator Value Selection Guide (For Continuous Mode Operation)
60
40
20
15
12
10
9.0
8.0
7.0
60
40
35
25
20
18
30
16
15
14
60
40
30
25
22
20
19
18
17
300
70
60
50
45
40
35
30
25
20
3.0
2.5
1.5
0.8
0.5
0.3
3.0
0.8
0.6
0.5
0.4
0.3
3.0
2.0
1.5
0.5
0.3
L330
L470
L150
L220
0.4
0.6
1.0
2.0
L100
L68
L47
H470
H1000
H680
H220
H330
H150
L680
L330
L470
L150
L220
L100
L68
L47
1.2
H470
H1000
H680
H220
H330
H150
L680
L330
L470
L150
L220
L100
L68
H1500
1.0
1.5
2.0
2.5
H470
H1000
H680
H220
H330
H150
L680
L330
L150
L220
L100
L68
H1500
3.0
0.8
0.6
0.5
0.4
0.3
1.0
1.5
2.0
2.5
35
L470
H680
H220
H330
H150
L680
L330
L150
L220
L100
L68
H1500
L470
H2000
L47
H470
H1000
150
200
250
0.4
0.6
0.8 1.0
2.5