12

Figure 5. LM2596-5.0

Figure 7. LM2596-ADJ

LM2596 SERIES BUCK REGULATOR DESIGN PROCEDURE (Continued)

Schott

Renco

Pulse Engineering

Coilcraft

Inductance

(

µH)

Cur-

rent

(A)

Through

Hole

Surface

Mount

Through

Hole

Surface

Mount

Through

Hole

Surface

Mount

Surface

Mount

L15 22

0.99

67148350 67148460 RL-1284-22-43 RL1500-22 PE-53815 PE-53815-S DO3308-223

L21 68

0.99

67144070 67144450

RL-5471-5

RL1500-68 PE-53821 PE-53821-S

DO3316-683

L22 47

1.17

67144080 67144460

RL-5471-6

-

PE-53822 PE-53822-S DO3316-473

L23 33

1.40

67144090 67144470

RL-5471-7

-

PE-53823 PE-53823-S

DO3316-333

L24 22

1.70

67148370 67148480 RL-1283-22-43

-

PE-53824 PE-53825-S

DO3316-223

L25 15

2.10

67148380 67148490 RL-1283-15-43

-

PE-53825 PE-53824-S

DO3316-153

L26 330

0.80

67144100 67144480

RL-5471-1

-

PE-53826 PE-53826-S DO5022P-334

L27 220

1.00

67144110 67144490

RL-5471-2

-

PE-53827 PE-53827-S DO5022P-224

L28 150

1.20

67144120 67144500

RL-5471-3

-

PE-53828 PE-53828-S DO5022P-154

L29 100

1.47

67144130 67144510

RL-5471-4

-

PE-53829 PE-53829-S DO5022P-104

L30 68

1.78

67144140 67144520

RL-5471-5

-

PE-53830 PE-53830-S DO5022P-683

L31 47

2.20

67144150 67144530

RL-5471-6

-

PE-53831 PE-53831-S DO5022P-473

L32 33

2.50

67144160 67144540

RL-5471-7

-

PE-53932 PE-53932-S DO5022P-333

L33 22

3.10

67148390 67148500 RL-1283-22-43

-

PE-53933 PE-53933-S DO5022P-223

L34 15

3.40

67148400 67148790 RL-1283-15-43

-

PE-53934 PE-53934-S DO5022P-153

L35 220

1.70

67144170

-

RL-5473-1

-

PE-53935 PE-53935-S

-

L36 150

2.10

67144180

-

RL-5473-4

-

PE-54036 PE-54036-S

-

L37 100

2.50

67144190

-

RL-5472-1

-

PE-54037 PE-54037-S

-

L38 68

3.10

67144200

-

RL-5472-2

-

PE-54038 PE-54038-S

-

L39 47

3.50

67144210

-

RL-5472-3

-

PE-54039 PE-54039-S

-

L40 33

3.50

67144220 67148290

RL-5472-4

-

PE-54040 PE-54040-S

-

L41 22

3.50

67144230 67148300

RL-5472-5

-

PE-54041 PE-54041-S

-

L42 150

2.70

67148410

-

RL-5473-4

-

PE-54042 PE-54042-S

-

L43 100

3.40

67144240

-

RL-5473-2

-

PE-54043

-

L44 68

3.40

67144250

-

RL-5473-3

-

PE-54044

-

Figure 8. Inductor Manufacturers Part Numbers

7V

8V

9V

10V

12V

15V

20V

40V

0.6

0.8 1.0

1.5

2.0 2.5 3.0

MAXIMUM LOAD CURRENT (A)

L29

L38

L39

L30

L21

L31

L40

L32

L33

L34

L25

L23

L22

L24

10

0

H

µ

68

H

µ

47

H

µ

33

H

µ

22

H

µ

15

H

µ

0.6

0.8 1.0

1.5

2.0 2.5 3.0

MAXIMUM LOAD CURRENT (A)

4

5

6

7

8

9

10

15

20

25

30

40

50

60

70

L27

L35

L28

L36

L29

L21

L30

L38

L43

L44

L37

L22

L31

L39

L23

L15

L24

L40

L32

L33

L34

L25

33

H

µ

22

H

µ

15

H

µ

47

H

µ

68

H

µ

100

H

µ

150

H

µ

220

H

µ

0

10

20

30 40

50

60 70

2200

2000

1800

1600

1400

1200

1000

800

600

400

200

CAPACITOR VOLTAGE RATING (V)

Figure 9. RMS Current Ratings for Low ESR

Electrolytic Capacitors (typical)

LM2596 Simple switcher Power Converter 150kHz

3A Step-Down Voltage Regulator