LM2576
LM2576 Series Buck Regulator Design Procedures
(continued)
Indicator Value Selection Guide
(For Continuous Mode Operation)
Figure 18. LM2576–3.3
MAXIMUM INPUT VOLTAGE (V)
MAXIMUM INPUT VOLTAGE (V)
60
40
20
15
10
8.0
7.0
6.0
L680
60
L470
L330
L220
L150
L100
L68
L47
5.0
0.3
40
20
15
12
10
9.0
8.0
H1000
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
7.0
0.3
0.4
0.5
0.6
0.8 1.0 1.2
1.5
2.0
2.5 3.0
H680
Figure 19. LM2576–5
H470
H330
H220
H150
IL, MAXIMUM LOAD CURRENT (A)
IL, MAXIMUM LOAD CURRENT (A)
Figure 20. LM2576–12
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
Figure 21. LM2576–15
H1500
H1000
H680
H470
H680
H470
H330
H220
H150
H330
H220
H150
L470
L220
L150
L100
L68
L330
L220
L150
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
IL, MAXIMUM LOAD CURRENT (A)
IL, MAXIMUM LOAD CURRENT (A)
Figure 22. LM2576–ADJ
300
250
200
ET, VOLTAGE TIME (V
µ
s)
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
IL, MAXIMUM LOAD CURRENT (A)
MOTOROLA ANALOG IC DEVICE DATA
13
MOTOROLA [ MOTOROLA, INC ]
