LM2679SX-3.3/NOPB National Semiconductor, LM2679SX-3.3/NOPB Datasheet - Page 19

• Manufacturer Part Number: LM2679SX-3.3/NOPB
• Description: IC REG SW 3.3V 5A STP DN TO263-7
• Manufacturer: National Semiconductor
• Series: SIMPLE SWITCHER®r
• Type: Step-Down (Buck)r

Specifications of LM2679SX-3.3/NOPB

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 3.3V
• Current - Output: 5A
• Frequency - Switching: 260kHz
• Voltage - Input: 8 ~ 40 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: D²Pak, TO-263 (7 leads + tab)
• For Use With: LM2679-5.0EVAL - EVALUATION BOARD FOR LM2679-5.0
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: *LM2679SX-3.3; LM2679SX-3.3

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
Inductance
Table 3. Output Capacitors for Fixed Output Voltage Application
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
Sanyo MV-GX 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
19
Sprague 594D Series
C Code
C10
C10
C10
C10
Surface Mount
No.
C6
C5
C5
C9
C5
C4
C6
C5
C4
C3
C2
C2
Through Hole
5
4
2
2
4
2
2
2
1
3
2
2
1
1
1
1
Nichicon PL 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
www.national.com
C6
C5
C7
C7
C5
C7
C5
C4
C4
C4
C5
C5
C4
C3
C3
C1