SC4524BSETRT Semtech, SC4524BSETRT Datasheet - Page 15

• Manufacturer Part Number: SC4524BSETRT
• Description: IC STEP-DWN SW REG 2A 16V 8-SOIC
• Manufacturer: Semtech
• Type: Step-Down (Buck)r

Specifications of SC4524BSETRT

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Current - Output: 2A
• Frequency - Switching: 300kHz ~ 1.3MHz
• Voltage - Input: 3 ~ 18 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: SC4524BSETR

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
/0.
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

) 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
5