SC4524A Ver la hoja de datos (PDF) - Semtech Corporation
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SC4524A Datasheet PDF : 19 Pages
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SC4524A
Recommended Component Parameters in Typical Applications
Table 4 lists the recommended inductance (L1) and compensation network (R7, C5, C8) for common input and output
voltages. The inductance is determined by assuming that the ripple current is 35% of load current IO. The compensator
parameters are calculated by assuming a 22mF low ESR ceramic output capacitor and a loop gain crossover frequency
of FSW/10.
SC4524A Compensator Parameters
Table 4. Recommended inductance (L1) and compensator (R7, C5, C8)
Typical Applications
Recommended Parameters
Vin(V)
Vo(V)
Io(A)
Fsw(kHz) C2(uF) L1(uH)
R7(k)
C5(nF) C8(pF)
1.5
1
2
500
500
8.2
7.15
2.2
4.7
7.15
2.2
2.5
1
2
500
1000
500
1000
15
11.3
1
6.8
20
0.68
6.8
11.3
1
3.3
20
0.47
3.3
1
2
500
1000
500
1000
15
15
0.82
8.2
30.9
0.47
8.2
15
0.82
4.7
30.9
0.47
12
5
1
500
1000
2
500
1000
15
23.7
0.68
10
41.2
0.47
8.2
23.7
0.68
4.7
45.3
0.47
7.5
1
2
500
1000
500
1000
15
35.7
0.68
8.2
63.4
0.47
8.2
35.7
0.68
4.7
63.4
0.47
10
1
2
500
10
42.2
0.68
1000
500
22
4.7
4.7
84.5
0.47
42.2
0.68
10
1000
2.2
84.5
0.47
1.5
1
2
300
15
8.2
4.32
2.2
2.5
1
2
3.3
1
2
500
15
8.2
12.4
1.0
22
10
15
0.82
5
24
1
500
1000
2
500
1000
22
20
0.68
15
43.2
0.47
15
20
0.68
6.8
43.2
0.47
7.5
1
2
500
1000
500
1000
33
35.7
0.68
15
63.4
0.47
15
35.7
0.68
8.2
63.4
0.47
10
1
2
500
1000
500
1000
33
43.2
0.68
22
84.5
0.47
15
43.2
0.68
10
84.5
0.47
16
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