SC4524F

18

Recommended Component Parameters in Typical Applications

Table 5 lists the recommended inductance (L

voltages. The inductance is determined by assuming that the ripple current is 35% of load current I

parameters are calculated by assuming a 22mF low ESR ceramic output capacitor and a loop gain crossover frequency

of F

Table 5. Recommended inductance (L

Typical Applications

Recommended Parameters

Vin (V)

Vo (V)

Io (A)

Fsw (KHz)

C2 (uF)

L1 (uH)

R7 (K)

C5 (nF)

C8 (pF)

500

6.8

4.02

3.3

1000

3.3

7.5

0.82

500

3.3

4.02

3.3

1000

1.5

7.5

0.82

500

4.7

13.3

0.82

1000

2.2

21.5

0.68

500

2.2

11

0.82

1000

1.5

21.5

0.68

500

6.8

4.02

3.3

1000

3.3

7.68

0.82

500

3.3

4.02

3.3

1000

2.2

7.68

0.82

500

8.2

6.81

2.2

1000

4.7

14.3

0.68

500

4.7

6.81

1.5

1000

2.2

12.1

0.68

500

6.8

9.09

1

1000

3.3

16.2

0.68

500

3.3

9.09

1

1000

2.2

17.8

0.68

1

500

8.2

4.32

3.3

2

500

4.7

4.32

3.3

22

500

15

6.81

1.5

22

1000

6.8

12.1

0.82

10

500

6.8

6.81

1.5

22

1000

3.3

12.1

0.68

10

500

15

9.09

1

22

1000

8.2

18.7

0.68

10

500

8.2

9.09

1

22

1000

4.7

18.7

0.68

500

15

14.3

0.82

1000

10

24.9

0.68

500

8.2

14.3

0.82

1000

4.7

27.4

0.68

500

15

21.5

0.82

1000

8.2

38.3

0.68

500

8.2

21.5

0.82

1000

4.7

38.3

0.68

500

10

25.5

0.82

1000

4.7

51.1

0.68

500

4.7

25.5

0.82

1000

2.2

51.1

0.68

10

3.3

5

12

1.5

2.5

1.5

2.5

3.3

1.5

2.5

3.3

5

7.5

10

1

2

1

1

2

1

1

1

1

2

2

2

2

2

2

22

10

1

1

1

2

2