SC4525ASETRT Semtech, SC4525ASETRT Datasheet - Page 16

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

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

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