SC4524C Просмотр технического описания (PDF) - Semtech Corporation
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SC4524C Datasheet PDF : 22 Pages
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SC4524C
Recommended Component Parameters in Typical Applications
Table 5 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.
SCTa4b5le245.CReCcoommmpeenndseadtoinrdPucatraanmcee(tLe1)rsand compensator (R7, C5, C8)
Vin(V)
12
24
Typical Applications
Vo(V) Io(A) Fsw(kHz)
1.5
1
2
500
1
2.5
2
500
1000
500
1000
1
3.3
2
500
1000
500
1000
5
1
2
500
1000
500
1000
1
7.5
2
500
1000
500
1000
1
10
2
500
1000
500
1000
1.5
1
2
300
2.5
1
2
3.3
1
2
500
5
1
2
500
1000
500
1000
1
7.5
2
500
1000
500
1000
1
10
2
500
1000
500
1000
C2(uF)
22
Recommended Parameters
L1(uH)
R7(k)
C5(nF) C8(pF)
8.2
4.7
4.32
3.3
10
15
6.81
1.5
22
6.8
12.1
0.82
10
6.8
6.81
1.5
22
3.3
12.1
0.68
10
15
9.09
1
22
8.2
18.7
0.68
10
8.2
9.09
1
22
4.7
18.7
0.68
15
14.3
0.82
10
24.9
0.68
8.2
14.3
0.82
4.7
27.4
0.68
15
21.5
0.82
8.2
38.3
0.68
10
8.2
21.5
0.82
4.7
38.3
0.68
10
25.5
0.82
4.7
51.1
0.68
4.7
25.5
0.82
2.2
51.1
0.68
10
8.2
5.49
3.3
47
15
8.2
22
10
7.5
9.09
1.5
1
10
22
12.1
0.82
22
15
26.1
0.68
10
10
12.1
0.82
22
6.8
26.1
0.68
33
21.5
0.82
10
15
38.3
0.68
10
21.5
0.82
22
8.2
38.3
0.68
10
22
26.1
0.82
22
10
51.1
0.68
10
10
26.1
0.82
22
8.2
51.1
0.68
10
17
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