SC4525A View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'SC4525A' PDF : 19 Pages View PDF
SC4525A
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 47mF low ESR ceramic output capacitor and a loop gain crossover frequency
of FSW/10.
Table 5. Recommended inductance (L1) and compensator (R7, C5, C8)
Vin(V)
12
24
Typical Applications
Vo(V)
1.5
Io(A)
Fsw(kHz)
500
2.5
500
1000
3.3
500
1000
5
3
500
1000
7.5
500
1000
10
500
1000
1.5
300
2.5
500
1000
3.3
500
1000
5
3
500
1000
7.5
500
1000
10
500
1000
C2(uF)
47
47
Recommended Parameters
L1(uH)
3.3
R7(k)
10
C5(nF)
2.2
C8(pF)
4.7
16.2
2.2
2.2
29.4
0.47
6.8
23.2
2.2
3.3
39.2
0.47
6.8
29.4
2.2
10
3.3
69.8
0.47
6.8
43.2
2.2
3.3
90.9
0.47
3.3
69.8
2.2
2.2
133
0.47
6.8
6.81
2.2
6.8
12.4
2.2
2.2
29.4
0.47
6.8
23.2
2.2
3.3
43.2
0.47
8.2
29.4
2.2
10
4.7
59
0.47
10
49.9
2.2
4.7
100
0.47
15
59
2.2
6.8
133
0.47
16
Share Link: 
