LM2575/LM2575HV SeriesBuckRegulatorDesignProcedure(FixedOutput)(Continued)

Conditions

Inductor

Output Capacitor

Through Hole Electrolytic

Surface Mount Tantalum

Output

Load

Max Input

Inductance

Inductor

Panasonic

Nichicon

AVX TPS

Sprague

Voltage

Current

Voltage

(µH)

(#)

HFQ Series

PL Series

Series

595D Series

(V)

(A)

(V)

(µF/V)

(µF/V)

(µF/V)

(µF/V)

3.3

2

5

22 L41

470/25

560/16

330/6.3

390/6.3

7

22 L41

560/35

560/35

330/6.3

390/6.3

10

22 L41

680/35

680/35

330/6.3

390/6.3

40

33 L40

560/35

470/35

330/6.3

390/6.3

6

22 L33

470/25

470/35

330/6.3

390/6.3

2

10

33 L32

330/35

330/35

330/6.3

390/6.3

40

47 L39

330/35

270/50

220/10

330/10

5

2

8

22 L41

470/25

560/16

220/10

330/10

10

22 L41

560/25

560/25

220/10

330/10

15

33 L40

330/35

330/35

220/10

330/10

40

47 L39

330/35

270/35

220/10

330/10

9

22 L33

470/25

560/16

220/10

330/10

2

20

68 L38

180/35

180/35

100/10

270/10

40

68 L38

180/35

180/35

100/10

270/10

12

2

15

22 L41

470/25

470/25

100/16

180/16

18

33 L40

330/25

330/25

100/16

180/16

30

68 L44

180/25

180/25

100/16

120/20

40

68 L44

180/35

180/35

100/16

120/20

15

33 L32

330/25

330/25

100/16

180/16

2

20

68 L38

180/25

180/25

100/16

120/20

40

150 L42

82/25

82/25

68/20

68/25

FIGURE 2. LM2575 Fixed Voltage Quick Design Component Selection Table

LM2575/LM2575HV SeriesBuckRegulatorDesignProcedure(AdjustableOutput)

Output

Voltage

(V)

Through Hole Output Capacitor

Surface Mount Output Capacitor

Panasonic

Nichicon PL

Feedforward

AVX TPS

Sprague

Feedforward

HFQ Series

Series

Capacitor

Series

595D Series

Capacitor

(µF/V)

(µF/V)

(µF/V)

(µF/V)

2

820/35

820/35

33 nF

330/6.3

470/4

33 nF

4

560/35

470/35

10 nF

330/6.3

390/6.3

10 nF

6

470/25

470/25

3.3 nF

220/10

330/10

3.3 nF

9

330/25

330/25

1.5 nF

100/16

180/16

1.5 nF

12

330/25

330/25

1 nF

100/16

180/16

1 nF

15

220/35

220/35

680 pF

68/20

120/20

680 pF

24

220/35

150/35

560 pF

33/25

33/25

220 pF

28

100/50

100/50

390 pF

10/35

15/50

220 pF

FIGURE 3. Output Capacitor and Feedforward Capacitor Selection Table

7

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UMW LM2575/LM2575HV

UMW LM2575/LM2575HV