SC4524B Semtech Corporation, SC4524B Datasheet - Page 15

• Manufacturer Part Number: SC4524B
• Description: 16V 2A Step-Down Switching Regulator
• Manufacturer: Semtech Corporation

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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
Recommended Component Parameters in Typical Applications
SW
/10.
Table 4. Recommended inductance (L
Vin(V)
3.3
12
5
Vo(V)
1.5
2.5
1.5
2.5
3.3
1.5
2.5
3.3
7.5
10
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
Fsw(kHz)
1000
1000
1000
1000
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
500
500
500
500
500
500
500
500
500
500
500
1
) and compensation network (R
1
) and compensator (R
C2(uF)
22
L1(uH)
6.8
3.3
3.3
1.5
4.7
2.2
2.2
1.5
6.8
3.3
3.3
2.2
8.2
4.7
4.7
2.2
6.8
3.3
3.3
2.2
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
15
15
15
10
15
10
Recommended Parameters
7
, C
R7(k)
5
6.65
12.4
6.65
12.4
22.1
35.7
18.2
35.7
6.65
12.7
6.65
12.7
11.3
23.7
11.3
26.7
29.4
7.15
7.15
11.3
11.3
30.9
30.9
23.7
41.2
23.7
45.3
35.7
63.4
35.7
63.4
42.2
84.5
42.2
84.5
, C
20
15
15
20
20
15
15
8
)
7
, C
5
, C
C5(nF)
0.68
0.68
0.68
0.47
0.68
0.47
0.68
0.68
0.47
0.47
0.82
0.47
0.82
0.47
0.68
0.47
0.82
0.47
0.82
0.47
0.68
0.47
0.68
0.47
0.68
0.47
0.68
0.47
0.68
0.47
0.68
0.47
2.2
2.2
2.2
2.2
1.5
2.2
2.2
8
) for common input and output
1
1
1
C8(pF)
10
O
. The compensator
SC4524B
15