Recommended Component Parameters in Typical Applications

Table 4 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 4. Recommended inductance (L

Vin(V)

Vo(V)

Io(A)

Fsw(kHz)

C2(uF)

L1(uH)

R7(k)

C5(nF)

C8(pF)

1

15

2

8.2

1

15

2

8.2

1

22

2

10

500

22

20

0.68

1000

15

43.2

0.47

500

15

20

0.68

1000

6.8

43.2

0.47

500

33

35.7

0.68

1000

15

63.4

0.47

500

15

35.7

0.68

1000

8.2

63.4

0.47

500

33

43.2

0.68

1000

22

84.5

0.47

500

15

43.2

0.68

1000

10

84.5

0.47

Typical Applications

5

1

2

7.5

1

2

Recommended Parameters

24

1.5

300

22

4.32

2.2

10

2.5

500

1.0

3.3

15

0.82

10

1

2

12.4

SC4524A

5