LM2576
LM2576 Series Buck Regulator Design Procedures (continued)
Indicator Value Selection Guide (For Continuous Mode Operation)
60
40
20
15
60
L680
H1000
H680
H470
L330
H330
H220
H150
L470
40
L330
20
15
L680
10
L220
L470
8.0
12
L150
7.0
L220
10
L100
L150
L68
9.0
6.0
L100
8.0
L47
L68
L47
5.0
0.3
7.0
0.3
0.4 0.5 0.6
0.8 1.0
1.5
2.0 2.5 3.0
0.4 0.5 0.6
0.8 1.0 1.2 1.5
2.0
2.5 3.0
I , MAXIMUM LOAD CURRENT (A)
L
I , MAXIMUM LOAD CURRENT (A)
L
Figure 18. LM2576−3.3
Figure 19. LM2576−5
60
60
40
35
30
40
35
30
H1500
H1500
25
H1000
L470
H1000
H680
H470
25
H680
H470
H330
20
18
H220
H150
H330
H220
22
20
19
H150
L680
L680
L470
16
15
L330
L330
L220
L220
L150
L150
18
L100
L100
L68
L68
14
0.3
17
0.3
0.4 0.5 0.6
0.8 1.0
1.5
2.0 2.5 3.0
0.4 0.5 0.6
0.8 1.0
1.5
2.0 2.5 3.0
I , MAXIMUM LOAD CURRENT (A)
L
I , MAXIMUM LOAD CURRENT (A)
L
Figure 20. LM2576−12
Figure 21. LM2576−15
300
250
H2000
200
150
H1500
H1000
H680
L220
H470
L150
H330
H220
100
90
80
70
60
50
45
40
H150
L680
L470
L330
L100
1.5
35
L68
30
L47
25
20
0.3
0.4 0.5 0.6
0.8 1.0
2.0 2.5 3.0
I , MAXIMUM LOAD CURRENT (A)
L
Figure 22. LM2576−ADJ
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