參數(shù)資料
型號(hào)： LM2673
文件頁數(shù)： 3/25頁
文件大小： 495K
代理商： LM2673
Absolute Maximum Ratings
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
(Note 1)
Supply Voltage
ON/OFF Pin Voltage
Switch Voltage to Ground
Boost Pin Voltage
Feedback Pin Voltage
ESD Susceptibility
Human Body Model (Note 2)
Power Dissipation
Storage Temperature Range
45V
0.1V
≤
V
SH
≤
6V
1V
V
SW
+ 8V
0.3V
≤
V
FB
≤
14V
2 kV
Internally Limited
65C to +150C
Lead Temperature
M Package
Vapor Phase (60s)
Infrared (15s)
N Package (Soldering, 10s)
LLP Package (See AN-1187)
Maximum Junction Temperature
+215C
+220C
+260C
+150C
Operating Ratings
Supply Voltage
Temperature Range
6.5V to 40V
40C
≤
T
J
≤
+125C
Electrical Characteristics
LM2671-3.3
Specifications with standard type face are for T
J
= 25C, and those in
bold type face
apply over
full
Operating Temperature Range.
Symbol
Parameter
Conditions
Typical
(Note 4)
Min
Max
(Note 5)
Units
(Note 5)
SYSTEM PARAMETERS
Test Circuit Figure 2 (Note 3)
V
OUT
Output Voltage
V
OUT
Output Voltage
η
Efficiency
V
IN
= 8V to 40V, I
LOAD
= 20 mA to 500 mA
V
IN
= 6.5V to 40V, I
LOAD
= 20 mA to 250 mA
V
IN
= 12V, I
LOAD
= 500 mA
3.3
3.3
86
3.251/
3.201
3.251/
3.201
3.350/
3.399
3.350/
3.399
V
V
%
LM2671-5.0
Symbol
Parameter
Conditions
Typical
(Note 4)
Min
Max
(Note 5)
Units
(Note 5)
SYSTEM PARAMETERS
Test Circuit Figure 2 (Note 3)
V
OUT
Output Voltage
V
OUT
Output Voltage
η
Efficiency
V
IN
= 8V to 40V, I
LOAD
= 20 mA to 500 mA
V
IN
= 6.5V to 40V, I
LOAD
= 20 mA to 250 mA
V
IN
= 12V, I
LOAD
= 500 mA
5.0
5.0
90
4.925/
4.850
4.925/
4.850
5.075/
5.150
5.075/
5.150
V
V
%
LM2671-12
Symbol
Parameter
Conditions
Typical
(Note 4)
Min
Max
(Note 5)
Units
(Note 5)
SYSTEM PARAMETERS
Test Circuit Figure 2 (Note 3)
V
OUT
Output Voltage
η
Efficiency
V
IN
= 15V to 40V, I
LOAD
= 20 mA to 500 mA
V
IN
= 24V, I
LOAD
= 500 mA
12
94
11.82/
11.64
12.18/
12.36
V
%
LM2671-ADJ
Symbol
Parameter
Conditions
Typ
Min
Max
(Note 5)
Units
(Note 4)
(Note 5)
SYSTEM PARAMETERS
Test Circuit Figure 3 (Note 3)
V
FB
Feedback
Voltage
V
IN
= 8V to 40V, I
LOAD
= 20 mA to 500 mA
1.210
1.192/
1.174
1.228/
1.246
V
V
OUT
Programmed for 5V
(see Circuit of Figure 3)
L
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