SC4525CSETRT Semtech, SC4525CSETRT Datasheet - Page 16

• Manufacturer Part Number: SC4525CSETRT
• Description: IC BUCK ADJ 3A 8SOIC
• Manufacturer: Semtech
• Series: -r
• Type: Step-Down (Buck), PWM - Current Moder

Specifications of SC4525CSETRT

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1 V ~ 26.88 V
• Current - Output: 3A
• Frequency - Switching: 300kHz ~ 1.3MHz
• Voltage - Input: 3 V ~ 28 V
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width) Exposed Pad
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: SC4525CSETR

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
/10.
Vin(V)
Table 5. Recommended inductance (L
12
24
Vo(V)
1.5
2.5
3.3
1.5
2.5
3.3
7.5
7.5
10
10
5
5
Typical Applications
Io(A)
3
3
Fsw(kHz)
1000
1000
1000
1000
1000
1000
1000
500
500
500
500
500
500
300
500
500
500
500
500
1
) 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
6.8
6.8
6.8
3.3
8.2
4.7
4.7
10
15
7
, C
R7(k)
5.23
8.45
15.4
12.1
20.5
15.4
36.5
22.6
47.5
36.5
3.57
6.49
12.1
22.6
15.4
30.9
26.1
52.3
30.9
5
Recommended Parameters
, C
8
)
7
, C
5
, C
C5(nF)
0.82
0.82
0.82
0.82
0.82
0.82
0.82
8
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
) for common input and output
C8(pF)
22
O
. The compensator
SC4525C
1 +220pF
Snubber
no
no
16