SC4525ASETRT Semtech, SC4525ASETRT Datasheet - Page 16

IC STEP-DWN SW REG 3A 28V 8-SOIC

SC4525ASETRT

Manufacturer Part Number
SC4525ASETRT
Description
IC STEP-DWN SW REG 3A 28V 8-SOIC
Manufacturer
Semtech
Type
Step-Down (Buck)r
Datasheet

Specifications of SC4525ASETRT

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Current - Output
3A
Frequency - Switching
300kHz ~ 1.3MHz
Voltage - Input
8 ~ 28 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-SOIC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Output
-
Power - Output
-
Other names
SC4525ASETR

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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 47mF low ESR ceramic output capacitor and a loop gain crossover frequency
of F
Recommended Component Parameters in Typical Applications
SW
/0.
Table 5. Recommended inductance (L
Vin(V)
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)
3
3
Fsw(kHz)
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
500
500
500
500
500
500
300
500
500
500
500
500

) and compensation network (R
1
) and compensator (R
C2(uF)
47
47
L1(uH)
3.3
4.7
2.2
6.8
3.3
6.8
3.3
6.8
3.3
3.3
2.2
6.8
6.8
2.2
6.8
3.3
8.2
4.7
4.7
6.8
10
15
Recommended Parameters
7
, C
5
R7(k)
16.2
29.4
23.2
39.2
29.4
69.8
43.2
90.9
69.8
6.81
12.4
29.4
23.2
43.2
29.4
49.9
, C
133
100
133
10
59
59
8
)
7
, C
5
, C
C5(nF)
0.47
0.47
0.47
0.47
0.47
0.47
0.47
0.47
0.47
0.47
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
8
) for common input and output
C8(pF)
10
10
O
. The compensator
SC4525A
6

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