LM2596T-12 National Semiconductor, LM2596T-12 Datasheet - Page 12

• Manufacturer Part Number: LM2596T-12
• Description: IC, STEP-DOWN VOLTAGE REGULATOR, TO220-5
• Manufacturer: National Semiconductor

Specifications of LM2596T-12

• Input Voltage: 40V
• Output Current: 3A
• Output Voltage: 12V
• No. Of Outputs: 1
• No. Of Pins: 5
• Operating Temperature Range: -40°C To +125°C
• Termination Type: Through Hole
• Filter Terminals: Through Hole
• Rohs Compliant: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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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 L42
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
Inductor
( # )
12
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
Output Capacitor
(µF/V)
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
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
Series
(µF/V)
68/20
(Continued)
595D Series
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