LM2596S-12 National Semiconductor, LM2596S-12 Datasheet - Page 11

• Manufacturer Part Number: LM2596S-12
• Description: DC/DC Converter IC
• Manufacturer: National Semiconductor

Specifications of LM2596S-12

• Input Voltage: 40V
• Output Current: 3A
• Output Voltage: 12V
• No. Of Pins: 5
• Termination Type: SMD
• Mounting Type: Through Hole
• Voltage Regulator Type: Buck Switching
• Output Current Max: 3A
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

LM2596 Series Buck Regulator Design Procedure (Fixed Output)
Voltage
Output
3.3
(V)
12
5
Conditions
Current
Load
(A)
3
2
3
2
3
2
FIGURE 2. LM2596 Fixed Voltage Quick Design Component Selection Table
Max Input
Voltage
(V)
10
40
10
40
10
15
40
20
40
15
18
30
40
15
20
40
5
7
6
8
9
Inductance
(µH)
Inductor
150
22
22
22
33
22
33
47
22
22
33
47
22
68
68
22
33
68
68
33
68
L41
L41
L41
L40
L33
L32
L39
L41
L41
L40
L39
L33
L38
L38
L41
L40
L44
L44
L32
L38
L42
Inductor
( # )
11
HFQ Series
Panasonic
Through Hole Electrolytic
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
(µF/V)
82/25
PL Series
Nichicon
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
(µF/V)
Output Capacitor
82/25
Surface Mount Tantalum
AVX TPS
330/6.3
330/6.3
330/6.3
330/6.3
330/6.3
330/6.3
Series
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
(µF/V)
68/20
(Continued)
595D Series
www.national.com
Sprague
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
(µF/V)
68/25