LM2679T-ADJ National Semiconductor, LM2679T-ADJ Datasheet - Page 3

• Manufacturer Part Number: LM2679T-ADJ
• Description: DC/DC Converter IC
• Manufacturer: National Semiconductor

Specifications of LM2679T-ADJ

• Input Voltage: 40V
• Output Current: 5A
• Output Voltage: 37V
• No. Of Outputs: 1
• No. Of Pins: 7
• Termination Type: Through Hole
• Mounting Type: Through Hole
• Voltage Regulator Type: Switching
• Output Current Max: 5A
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Symbol
Symbol
Symbol
Symbol
V
V
V
V
LM2679-3.3
LM2679-5.0
LM2679-12
LM2679-ADJ
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Input Supply Voltage
Softstart Pin Voltage
Switch Voltage to Ground
Boost Pin Voltage
Feedback Pin Voltage
Power Dissipation
ESD (Note 2)
Electrical Characteristics
range of operation, −40˚C to 125˚C. Specifications appearing in normal type apply for T
OUT
OUT
OUT
FB
Output Voltage
Efficiency
Output Voltage
Efficiency
Output Voltage
Efficiency
Feedback
Voltage
Efficiency
Parameter
Parameter
Parameter
Parameter
V
V
V
V
V
V
V
V
V
IN
IN
IN
IN
IN
IN
IN
OUT
IN
= 8V to 40V, 100mA
= 12V, I
= 8V to 40V, 100mA
= 12V, I
= 15V to 40V, 100mA
= 24V, I
= 8V to 40V, 100mA
= 12V, I
Programmed for 5V
LOAD
LOAD
LOAD
LOAD
Internally Limited
Limits appearing in bold type face apply over the entire junction temperature
Conditions
Conditions
Conditions
Conditions
(Note 1)
−0.3V to 14V
= 5A
= 5A
= 5A
= 5A
−0.1V to 6V
−1V to V
V
SW
+ 8V
2 kV
45V
I
I
I
OUT
OUT
OUT
I
IN
OUT
3
5A
5A
5A
5A
Storage Temperature Range
Soldering Temperature
Operating Ratings
Supply Voltage
Junction Temperature Range (T
Wave
Infrared
Vapor Phase
(Note 3)
(Note 3)
(Note 3)
(Note 3)
Typical
Typical
Typical
1.21
Typ
3.3
5.0
82
84
12
92
84
A
= T
3.234/3.201
4.900/4.850
11.76/11.64
1.186/1.174
J
(Note 4)
(Note 4)
(Note 4)
(Note 4)
= 25˚C. R
Min
Min
Min
Min
J
)
ADJ
3.366/3.399
5.100/5.150
12.24/12.36
1.234/1.246
= 5.6K
(Note 4)
(Note 4)
(Note 4)
(Note 4)
Max
Max
Max
Max
−65˚C to 150˚C
−40˚C to 125˚C
10 sec, 240˚C
75 sec, 219˚C
4 sec, 260˚C
www.national.com
8V to 40V
Units
Units
Units
Units
%
%
%
%
V
V
V
V