sc4524c Semtech Corporation, sc4524c Datasheet - Page 16

• Manufacturer Part Number: sc4524c
• Description: 28v 2a Step-down Switching Regulator
• Manufacturer: Semtech Corporation

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
Recommended Component Parameters in Typical Applications
SW
/10.
SC4524C Compensator Parameters
Vin(V)
Table 5. Recommended inductance (L
12
24
Vo(V)
1.5
2.5
3.3
7.5
1.5
2.5
3.3
7.5
10
10
5
5
Typical Applications
Io(A)
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
Fsw(kHz)
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
500
500
500
500
500
500
500
500
500
500
500
300
500
500
500
500
500
500
500
1
) and compensation network (R
1
C2(uF)
) and compensator (R
22
L1(uH)
8.2
4.7
6.8
6.8
3.3
8.2
8.2
4.7
8.2
4.7
8.2
8.2
4.7
4.7
4.7
2.2
8.2
8.2
6.8
8.2
8.2
15
15
15
10
15
10
10
15
22
10
22
15
10
33
15
10
22
10
10
Recommended Parameters
R7(k)
4.32
6.81
12.1
6.81
12.1
9.09
18.7
9.09
18.7
14.3
24.9
14.3
27.4
21.5
38.3
21.5
38.3
25.5
51.1
25.5
51.1
5.49
9.09
12.1
26.1
12.1
26.1
21.5
38.3
21.5
38.3
26.1
51.1
26.1
51.1
7.5
7
, C
5
, C
7
8
, C
)
C5(nF)
0.82
0.68
0.68
0.68
0.82
0.68
0.82
0.68
0.82
0.68
0.82
0.68
0.82
0.68
0.82
0.68
0.82
0.68
0.82
0.68
0.82
0.68
0.82
0.68
0.82
0.68
0.82
0.68
5
3.3
1.5
1.5
3.3
1.5
, C
1
1
1
8
) for common input and output
C8(pF)
10
22
10
22
10
22
10
22
10
47
10
22
10
22
10
22
10
22
10
22
10
O
. The compensator
SC4524C
16