LM2575
INDUCTOR VALUE SELECTION GUIDE
60
Vin , MAXIMUM INPUT VOLTAGE (V)
20
15
10
8.0
7.0
6.0
H1000
L680
L470
L330
L220
L150
L100
5.0
0.2
60
40
25
20
15
12
10
9.0
L220
8.0
L150
7.0
0.2
0.3
0.4
0.5
0.6
0.7 0.8 0.9 1.0
H1500
H1000
L680
L470
L330
0.3
0.4
0.5
0.6
0.8
1.0
Vin , MAXIMUM INPUT VOLTAGE (V)
I
L
, MAXIMUM LOAD CURRENT (A)
I
L
, MAXIMUM LOAD CURRENT (A)
Figure 17. LM2575−3.3
Figure 18. LM2575−5.0
60
Vin , MAXIMUM INPUT VOLTAGE (V)
40
30
25
20
18
17
16
15
14
0.2
L680
L470
L330
L220
0.3
0.4
0.5
0.6
0.7 0.8 0.9 1.0
H2200
Vin , MAXIMUM INPUT VOLTAGE (V)
H1500
H1000
H680
H470
60
40
35
30
25
22
20
19
18
17
0.2
L680
H2200
H1500
H1000
H680
H470
L470
L330
L220
0.3
0.4
0.5
0.6
0.7 0.8 0.9 1.0
I
L
, MAXIMUM LOAD CURRENT (A)
I
L
, MAXIMUM LOAD CURRENT (A)
Figure 19. LM2575−12
Figure 20. LM2575−15
200
150
125
100
80
70
60
50
40
30
20
0.2
H2200
H1500
H1000
H680
H470
ET, VOLTAGE TIME (V
µ
s)
L680
L470
L330
L220
L150
L100
0.3
0.4
0.5
0.6
0.7 0.8 0.9 1.0
I
L
, MAXIMUM LOAD CURRENT (A)
Figure 21. LM2575−Adj
NOTE: This Inductor Value Selection Guide is applicable for continuous mode only.
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