LM2576
LM2576 Series Buck Regulator Design Procedures (continued)
Indicator Value Selection Guide (For Continuous Mode Operation)
Figure 18. LM2576–3.3
Figure 19. LM2576–5
60
60
40
L680
40
20
15
H1000
H680
H470
L330
H330
H220
H150
L470
L330
L220
L150
20
15
L680
10
L470
8.0
12
7.0
L220
10
L100
L68
L150
9.0
6.0
L100
1.5
8.0
L47
2.0
L68
L47
5.0
0.3
7.0
0.4
0.5 0.6
0.8
1.0
1.5
2.5 3.0
0.3
0.4
0.5 0.6
0.8 1.0 1.2
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
60
60
40
35
30
40
35
30
H1500
L680
H1500
25
H1000
L470
H1000
H680
H470
25
H680
H470
H330
20
18
H220
H150
H330
H220
22
H150
20
19
L680
0.4
L470
16
15
L330
L330
L220
L220
L150
L150
18
L100
L100
L68
L68
14
17
0.3
0.4
0.5 0.6
0.8 1.0
1.5
2.0
2.5 3.0
0.3
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 22. LM2576–ADJ
300
250
H2000
200
H1500
H1000
150
H680
L220
H470
L150
H330
H220
100
90
80
70
60
50
45
40
H150
L680
0.4
L470
L330
L100
1.5
35
L68
2.0
30
L47
25
20
0.3
0.5 0.6
0.8 1.0
2.5 3.0
I , MAXIMUM LOAD CURRENT (A)
L
13
MOTOROLA ANALOG IC DEVICE DATA