sc4525d Semtech Corporation, sc4525d Datasheet - Page 16

• Manufacturer Part Number: sc4525d
• Description: 18v, 3a, 350khz Step-down Switching Regulator
• Manufacturer: Semtech Corporation

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 47mF low ESR ceramic output capacitor and a loop gain crossover frequency
of F
© 2011 Semtech Corp.
Recommended Component Parameters in Typical Applications
SW
/10.
Table 4. Recommended inductance (L
Table 4: SC4525D Compensator Parameters
Vin(V)
3.3
12
5
Typical Applications
Vo(V)
1.0
2.0
1.5
2.5
3.3
1.5
2.5
3.3
7.5
5
Io(A)
3
C2(uF)
47
1
) and compensation network (R
1
) and compensator (R
L1(uH)
3.3
2.2
3.3
4.7
4.7
4.7
6.8
8.2
10
10
Recommended Parameters
R7(k)
3.74
6.49
3.74
6.49
3.74
6.98
8.66
11.5
18.2
7.5
7
, C
5
, C
C5(nF)
8
6.8
3.3
6.8
4.7
3.3
6.8
4.7
3.3
2.2
2.2
)
7
, C
5
, C
8
) for common input and output
C8(pF)
47
68
82
68
47
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O
. The compensator
SC4525D
7.15
12.4
7.15
12.4
14.3
7.15
13.3
16.5
22.1
34.8
R7
16