lm2678sx-adj National Semiconductor Corporation, lm2678sx-adj Datasheet - Page 20

• Manufacturer Part Number: lm2678sx-adj
• Description: Simple Switcher High Efficiency 5a Step-down Voltage Regulator
• Manufacturer: National Semiconductor Corporation

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Capacitor Selection Guides
No. represents the number of identical capacitor types to be connected in parallel
C Code indicates the Capacitor Reference number in Table 2 for identifying the specific component from the manufacturer.
Voltage (V)
Output
3.3
12
5
Voltage (V)
Inductance
Output
3.3
12
5
(µH)
100
10
15
22
33
10
15
22
33
47
10
15
22
33
47
68
TABLE 3. Output Capacitors for Fixed Output Voltage Application
Inductance
Sanyo OS-CON SA
(µH)
100
10
15
22
33
10
15
22
33
47
10
15
22
33
47
68
No.
2
2
1
1
2
1
1
1
1
2
1
1
1
1
1
1
Series
C Code
AVX TPS Series
No.
C5
C5
C5
C5
C4
C5
C5
C4
C4
C7
C8
C7
C7
C7
C6
C6
5
4
3
1
4
3
3
2
2
4
3
2
2
2
1
1
(Continued)
Sanyo MV-GX Series Nichicon PL Series
C Code
No.
C1
C1
C2
C1
C2
C3
C2
C2
C2
C5
C5
C5
C5
C4
C5
C4
2
2
1
1
2
1
1
1
1
1
1
1
1
1
1
1
20
C Code
Surface Mount
C10
C10
C10
C10
No.
Sprague 594D
Through Hole
C6
C5
C5
C9
C5
C4
C6
C5
C4
C3
C2
C2
5
4
2
2
4
2
2
2
1
3
2
2
1
1
1
1
Series
C Code
No.
C1
C1
C7
C7
C6
C7
C7
C3
C7
C6
C7
C6
C7
C6
C5
C5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Kemet T495 Series
C Code
C14
C17
C13
C12
C11
C10
No.
C8
C7
C5
C5
C6
C5
C5
C4
C2
C9
5
4
3
3
4
3
3
2
2
5
4
3
3
2
2
1
C Code
Panasonic HFQ
No.
C2
C3
C4
C4
C4
C5
C4
C4
C4
C9
C9
C8
C8
C8
C7
C8
2
2
1
1
2
1
1
1
2
2
1
1
1
1
1
1
Series
C Code
C6
C5
C7
C7
C5
C7
C5
C4
C4
C4
C5
C5
C4
C3
C3
C1