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