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

• Manufacturer Part Number: LM2679T-ADJ/NOPB
• Description: IC REG SIMPLE SWITCHER TO-220-7
• Manufacturer: National Semiconductor
• Series: SIMPLE SWITCHER®r
• Type: Step-Down (Buck)r

Specifications of LM2679T-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: Through Hole
• Package / Case: TO-220-7 (Bent and Staggered Leads)
• 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 1 - Unlimited
• Filter Terminals: Through Hole
• Rohs Compliant: Yes
• Dc To Dc Converter Type: Step Down
• Pin Count: 7 +Tab
• Input Voltage: 40V
• Switching Freq: 260KHz
• Efficiency: 84%
• Package Type: TO-220
• Output Type: Adjustable
• Switching Regulator: Yes
• Mounting: Through Hole
• Input Voltage (min): 8V
• Operating Temperature Classification: Automotive
• For Use With: LM2679-5.0EVAL - EVALUATION BOARD FOR LM2679-5.0
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Compliant
• Other names: *LM2679T-ADJ; *LM2679T-ADJ/NOPB; LM2679T-ADJ

V
η
V
η
V
η
V
η
Symbol
Symbol
Symbol
Symbol
OUT
OUT
OUT
FB
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics
of operation, −40°C to 125°C. Specifications appearing in normal type apply for T
LM2679-3.3
LM2679-5.0
LM2679-12
LM2679-ADJ
Input Supply Voltage
Softstart Pin Voltage
Switch Voltage to Ground (Note 13)
Boost Pin Voltage
Feedback Pin Voltage
Power Dissipation
Output Voltage
Efficiency
Output Voltage
Efficiency
Output Voltage
Efficiency
Feedback Voltage V
Efficiency
Parameter
Parameter
Parameter
Parameter
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
= 5A
= 5A
= 5A
= 5A
Limits appearing in bold type face apply over the entire junction temperature range
−0.3V to 14V
(Note 1)
−0.1V to 6V
Conditions
Conditions
Conditions
Conditions
−1V to V
V
SW
≤
≤
≤
≤
+ 8V
I
I
I
45V
OUT
OUT
OUT
I
OUT
IN
≤
≤
≤
≤
5A
5A
5A
5A
3
Operating Ratings
ESD (Note 2)
Storage Temperature Range
Soldering Temperature
Supply Voltage
Junction Temperature Range (T
Wave
Infrared
Vapor Phase
A
(Note 3)
(Note 3)
(Note 3)
(Note 3)
= T
Typical
Typical
Typical
1.21
Typ
3.3
5.0
82
84
12
92
84
J
= 25°C. R
3.234/3.201
4.900/4.850
11.76/11.64
1.186/1.174
(Note 4)
(Note 4)
(Note 4)
(Note 4)
ADJ
Min
Min
Min
Min
J
= 5.6KΩ
)
3.366/3.399
5.100/5.150
12.24/12.36
1.234/1.246
−65°C to 150°C
−40°C to 125°C
(Note 4)
(Note 4)
(Note 4)
(Note 4)
10 sec, 240°C
75 sec, 219°C
Max
Max
Max
Max
4 sec, 260°C
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8V to 40V
2 kV
Units
Units
Units
Units
%
%
%
%
V
V
V
V