LM2678S-ADJ/NOPB National Semiconductor, LM2678S-ADJ/NOPB Datasheet - Page 20
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LM2678S-ADJ/NOPB
Manufacturer Part Number
LM2678S-ADJ/NOPB
Description
IC REG SIMPLE SWITCHER TO-263-7
Manufacturer
National Semiconductor
Series
SIMPLE SWITCHER®r
Type
Step-Down (Buck)r
Datasheet
1.LM2678SD-3.3NOPB.pdf
(26 pages)
Specifications of LM2678S-ADJ/NOPB
Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
1.2 ~ 37 V
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)
Primary Input Voltage
40V
No. Of Outputs
1
Output Voltage
37V
Output Current
5A
No. Of Pins
7
Operating Temperature Range
-40°C To +125°C
Msl
MSL 3 - 168 Hours
Supply Voltage Range
8V To 40V
Rohs Compliant
Yes
Filter Terminals
SMD
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Other names
*LM2678S-ADJ
*LM2678S-ADJ/NOPB
LM2678S-ADJ
*LM2678S-ADJ/NOPB
LM2678S-ADJ
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
www.national.com
(Assumes worst case maximum input voltage and load current for a given inductance value)
* Check voltage rating of capacitors to be greater than application input voltage.
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 4. Input 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
2
2
*
*
*
*
*
*
*
*
*
*
*
*
Series
C Code
AVX TPS Series
C10
C10
No.
C9
C7
3
3
4
4
4
4
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
Sanyo MV-GX Series
C Code
No.
C7
C4
C9
C9
C8
C9
2
2
1
1
2
2
2
1
1
2
2
2
2
1
1
1
*
*
*
*
*
*
*
*
*
*
20
Sprague 594D Series
C Code
C13
C14
C14
C13
C14
C12
C12
C14
C13
C11
Surface Mount
No.
C8
C8
C8
C8
C8
C8
Through Hole
2
3
2
2
2
3
3
2
1
2
2
3
3
2
2
1
Nichicon PL Series
C Code
C10
C13
C13
C13
C12
C13
C13
C13
C10
C10
C12
C13
C13
C13
C13
No.
C6
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Kemet T495 Series
C Code
C18
C25
C24
C24
C25
C25
C25
C23
C19
C18
C18
C18
C24
C23
C21
C22
No.
3
4
3
3
3
4
4
3
2
4
4
4
4
3
2
2
C Code
Panasonic HFQ
C12
C12
C12
C10
C12
C12
C12
C10
C10
C10
C12
C12
C12
C12
No.
C9
C9
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Series
C Code
C16
C16
C16
C16
C13
C11
C14
C13
C15
C11
C8
C8
C8
C8
C8
C8