LM2596
LM2596 Series Buck Regulator Design Procedure (Fixed Output)
Conditions
Output
Voltage
(V)
3.3
Load
Current
(A)
3
Max Input
Voltage
(V)
5
7
10
40
6
2
5
3
10
40
8
10
15
40
9
2
12
3
20
40
15
18
30
40
15
2
20
40
22 L41
22 L41
22 L41
33 L40
22 L33
33 L32
47 L39
22 L41
22 L41
33 L40
47 L39
22 L33
68 L38
68 L38
22 L41
33 L40
68 L44
68 L44
33 L32
68 L38
150 L42
Inductor
Inductance
(µH)
Inductor
(#)
Panasonic
HFQ Series
(µF/V)
470/25
560/35
680/35
560/35
470/25
330/35
330/35
470/25
560/25
330/35
330/35
470/25
180/35
180/35
470/25
330/25
180/25
180/35
330/25
180/25
82/25
Output Capacitor
Through Hole Electrolytic
Nichicon
PL Series
(µF/V)
560/16
560/35
680/35
470/35
470/35
330/35
270/50
560/16
560/25
330/35
270/35
560/16
180/35
180/35
470/25
330/25
180/25
180/35
330/25
180/25
82/25
(Continued)
Surface Mount Tantalum
AVX TPS
Series
(µF/V)
330/6.3
330/6.3
330/6.3
330/6.3
330/6.3
330/6.3
220/10
220/10
220/10
220/10
220/10
220/10
100/10
100/10
100/16
100/16
100/16
100/16
100/16
100/16
68/20
Sprague
595D Series
(µF/V)
390/6.3
390/6.3
390/6.3
390/6.3
390/6.3
390/6.3
330/10
330/10
330/10
330/10
330/10
330/10
270/10
270/10
180/16
180/16
120/20
120/20
180/16
120/20
68/25
FIGURE 2. LM2596 Fixed Voltage Quick Design Component Selection Table
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