LM2596 데이터 시트보기 (PDF) - Estek Electronics Co. Ltd

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LM2596

3A Step-Down Voltage Regulator

Estek Electronics Co. Ltd 

LM2596

LM2596 SERIES BUCK REGULATOR DESING PROCEDURE (ADJUSTABLE OUTPUT)

Through Hole Output Capacitor

Surface Mount Output Capacitor

Output

Voltage (V)

2

Panasonic HFQ

Series

(F/V)

820/35

Nichicon PL Series

(F/V)

820/35

Feedforward

capacitor

33 nF

AVX TPS Series

(F/V)

330/6.3

Sprague 595D

Series

(F/V)

470/4

Feedforward

Capacitor

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

LM2596 SERIES BUCK REGULATOR DESIGN PROCEDURE

Inductor Value Selection Guides (For Continuous Mode Operation)

40V

L29

20V

L21

10V

8V

L22

7V

L30

L31

L40

L32

L33

40V L27

30V

25V

20V L28

19V

18V

L29

17V

L23

L34

6V

L24

16V L21

15V L22

L43

L36

L37

L38

L30

L39

L31

L40

L32

L33

L15

L25

5V

L16

0.6 0.8 1.0 1.5 2.0 2.5

3.0

Figure 4. LM2596-3.3

L23

14V

L24

L34

0.6 0.8 1.0 1.5 2.0 2.5

3.0

MAXIMUMFiLgOurAeD6. CLMUR25R9E6N-1T2 (A)

BEIJING ESTEK ELECTRONICS CO.,LTD

11

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