LM2596S-12 National Semiconductor, LM2596S-12 Datasheet - Page 16

• 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

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LM2596 Series Buck Regulator Design Procedure (Adjustable Output)
LM2596 Series Buck Regulator Design Procedure
INDUCTOR VALUE SELECTION GUIDES (For Continuous Mode Operation)
Voltage
Output
1 2
1 5
2 4
2 8
(V)
2
4
6
9
HFQ Series
Panasonic
FIGURE 4. LM2596-3.3
FIGURE 5. LM2596-5.0
820/35
560/35
470/25
330/25
330/25
220/35
220/35
100/50
(µF/V)
FIGURE 3. Output Capacitor and Feedforward Capacitor Selection Table
Through Hole Output Capacitor
Nichicon PL
820/35
470/35
470/25
330/25
330/25
220/35
150/35
100/50
Series
(µF/V)
01258325
01258324
Feedforward
Capacitor
680 pF
560 pF
390 pF
3.3 nF
1.5 nF
33 nF
10 nF
1 nF
16
AVX TPS
330/6.3
330/6.3
Series
220/10
100/16
100/16
(µF/V)
68/20
33/25
10/35
Surface Mount Output Capacitor
FIGURE 7. LM2596-ADJ
FIGURE 6. LM2596-12
595D Series
Sprague
390/6.3
330/10
180/16
180/16
120/20
(µF/V)
470/4
33/25
15/50
Feedforward
Capacitor
01258326
01258327
680 pF
220 pF
220 pF
3.3 nF
1.5 nF
33 nF
10 nF
1 nF