LM2576
LM2576 Series Buck Regulator Design Procedures
(continued)
Indicator Value Selection Guide
(For Continuous Mode Operation)
60
40
20
15
10
8.0
7.0
6.0
60
L330
L220
L150
L100
L68
L47
5.0
0.3
MAXIMUM INPUT VOLTAGE (V)
L470
40
20
15
12
10
9.0
8.0
L680
H1000
L680
H680
H470
H330
H220
H150
MAXIMUM INPUT VOLTAGE (V)
L470
L330
L220
L150
L100
L68
L47
0.4
0.5
0.6
0.8
1.0
1.5
2.0
2.5 3.0
7.0
0.3
0.4
0.5
0.6
0.8 1.0 1.2
1.5
2.0
2.5 3.0
I
L
, MAXIMUM LOAD CURRENT (A)
I
L
, MAXIMUM LOAD CURRENT (A)
Figure 18. LM2576−3.3
Figure 19. LM2576−5
60
MAXIMUM INPUT VOLTAGE (V)
MAXIMUM INPUT VOLTAGE (V)
40
35
30 H1500
25
H1000
20
18
L680
16
15
14
0.3
L470
L330
60
40
35
30
25
22
20
19
18
17
0.3
L680
L470
L330
L220
L150
H1500
H1000
H680
H470
H680
H470
H330
H220
H150
H330
H220
H150
L220
L150
L100
L68
L100
L68
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
L
, MAXIMUM LOAD CURRENT (A)
I
L
, MAXIMUM LOAD CURRENT (A)
Figure 20. LM2576−12
Figure 21. LM2576−15
ET, VOLTAGE TIME (V
μ
s)
300
250
200
150
100
90
80
70
60
50
45
40
35
30
25
20
0.3
H2000
H1500 H1000
H680
H470
H330
H220
H150
L680
L470
L330
L220
L150
L100
L68
L47
0.4
0.5
0.6
0.8 1.0
1.5
2.0
2.5 3.0
I
L
, MAXIMUM LOAD CURRENT (A)
Figure 22. LM2576−ADJ
http://onsemi.com
13
ONSEMI [ ON SEMICONDUCTOR ]
