lm2678sx-adj National Semiconductor Corporation, lm2678sx-adj Datasheet - Page 23

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

Capacitor Selection Guides
Output Voltage
1.21 to 2.50
2.5 to 3.75
6.25 to 7.5
10 to 12.5
12.5 to 15
3.75 to 5
5 to 6.25
7.5 to 10
15 to 20
20 to 30
30 to 37
(V)
TABLE 6. Output Capacitors for Adjustable Output Voltage Applications
Inductance
(µH)
100
100
100
100
100
33
47
33
47
22
33
47
22
33
47
68
22
33
47
68
33
47
68
33
47
68
33
47
68
33
47
68
33
47
68
10
15
22
33
47
68
*
*
*
*
No Values Available
AVX TPS Series
(Continued)
No.
7
5
4
3
4
3
2
3
2
2
1
3
2
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
C Code
C10
C1
C1
C1
C1
C1
C1
C1
C2
C2
C2
C2
C2
C2
C3
C2
C5
C5
C5
C4
C5
C5
C5
C5
C6
C6
C6
C6
C8
C8
C8
C8
C9
C9
C9
23
Surface Mount
No.
Sprague 594D
6
4
3
2
3
2
2
3
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
4
3
2
1
1
1
Series
C Code
C10
C11
C12
C12
C12
C13
C13
C13
C13
C13
C13
C2
C2
C2
C2
C2
C2
C2
C3
C3
C3
C3
C4
C3
C4
C3
C6
C6
C6
C5
C6
C6
C6
C6
C8
C8
C8
C8
C9
C9
C9
Kemet T495 Series
No.
7
5
4
3
4
3
2
3
2
2
1
3
2
1
1
2
2
1
1
2
2
1
1
1
1
1
1
2
2
2
1
2
1
1
1
8
5
4
3
2
2
C Code
C10
C10
C10
C10
C12
C12
C12
C12
C12
C12
C11
C11
C11
C11
C3
C3
C3
C3
C3
C3
C3
C4
C4
C4
C4
C4
C4
C6
C4
C8
C8
C8
C8
C8
C8
C8
C8
C8
C8
C8
C8
www.national.com