LM2673SX-12/NOPB National Semiconductor, LM2673SX-12/NOPB Datasheet - Page 3
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LM2673SX-12/NOPB
Manufacturer Part Number
LM2673SX-12/NOPB
Description
IC REG SW 12V 3A STP DN TO-263-7
Manufacturer
National Semiconductor
Series
SIMPLE SWITCHER®r
Type
Step-Down (Buck)r
Datasheet
1.LM2673SD-12NOPB.pdf
(26 pages)
Specifications of LM2673SX-12/NOPB
Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
12V
Current - Output
3A
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
LM2673-5.0EVAL - EVALUATION BOARD FOR LM2673-5.0
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Other names
*LM2673SX-12
*LM2673SX-12/NOPB
LM2673SX-12
*LM2673SX-12/NOPB
LM2673SX-12
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
LM2673-3.3
LM2673-5.0
LM2673-12
LM2673-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
−0.3V to 14V
= 3A
= 3A
= 3A
= 3A
−0.1V to 6V
Limits appearing in bold type face apply over the entire junction temperature range
−1V to V
(Note 1)
V
Conditions
Conditions
Conditions
Conditions
Internally
SW
Limited
+ 8V
≤
≤
≤
45V
≤
I
I
I
OUT
OUT
OUT
IN
I
OUT
≤
≤
≤
≤
3A
3A
3A
3A
3
Operating Ratings
Supply Voltage
Junction Temperature Range (T
ESD (Note 2)
Storage Temperature Range
Soldering Temperature
Wave
Infrared
Vapor Phase
A
(Note 3)
(Note 3)
(Note 3)
(Note 3)
= T
Typical
Typical
Typical
1.21
Typ
3.3
5.0
86
88
12
94
88
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
= 8.2KΩ
)
3.366/3.399
5.100/5.150
12.24/12.36
1.234/1.246
10 sec, 240°C
75 sec, 219°C
−65°C to 150°
−40°C to 125°C
(Note 4)
(Note 4)
(Note 4)
(Note 4)
4 sec, 260°C
Max
Max
Max
Max
www.national.com
8V to 40V
2 kV
C
Units
Units
Units
Units
%
%
%
%
V
V
V
V