
LM2675 Series Buck Regulator Design Procedure (Adjustable Output)
(Continued)
Case
Output
Voltage (V)
Inductance (H)
22
33
47
68
100
150
220
SM and TH
1.21–2.50
————
C1
C2
C3
SM and TH
2.50–3.75
—
C1
C2
C3
SM and TH
3.75–5.0
—
C4
C5
C6
SM and TH
5.0–6.25
—
C4
C7
C6
SM and TH
6.25–7.5
C8
C4
C7
C6
SM and TH
7.5–10.0
C9
C10
C11
C12
C13
SM and TH
10.0–12.5
C14
C11
C12
C13
SM and TH
12.5–15.0
C15
C16
C17
SM and TH
15.0–20.0
C18
C19
C20
SM and TH
20.0–30.0
C21
C22
TH
30.0–37.0
C23
C24
C25
Note 7: SM - Surface Mount,
TH - Through Hole
FIGURE 16. Capacitor Code Selection Guide
Output Capacitor
Cap.
Ref.
Desg.
#
Surface Mount
Through Hole
Sprague
AVX TPS
Sanyo OS-CON
Sanyo MV-GX
Nichicon
Panasonic
594D Series
Series
SA Series
Series
PL Series
HFQ Series
(F/V)
C1
120/6.3
100/10
220/35
C2
120/6.3
100/10
150/35
C3
120/6.3
100/10
100/35
120/35
C4
68/10
100/10
68/10
220/35
C5
100/16
100/10
150/35
C6
100/16
100/10
120/35
C7
68/10
100/10
68/10
150/35
C8
100/16
100/10
330/35
C9
100/16
330/35
C10
100/16
68/16
220/35
C11
100/16
68/16
150/35
C12
100/16
68/16
120/35
C13
100/16
120/35
C14
100/16
220/35
C15
47/20
68/20
47/20
220/35
C16
47/20
68/20
47/20
150/35
C17
47/20
68/20
47/20
120/35
C18
68/25
(2x) 33/25
220/35
C19
33/25
150/35
C20
33/25
120/35
C21
33/35
(2x) 22/25
150/35
C22
33/35
22/35
120/35
C23
220/50
100/50
120/50
C24
150/50
100/50
120/50
C25
150/50
82/50
Note 8: The SC series of Os-Con capacitors (others are SA series)
Note 9: The voltage ratings of the surface mount tantalum chip and Os-Con capacitors are too low to work at these voltages.
FIGURE 17. Output Capacitor Selection Table
LM2675
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