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LM2672 bảng dữ liệu(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
tên linh kiện LM2672
Giải thích chi tiết về linh kiện  SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator with Features
PDF  25 Pages
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nhà sản xuất  NSC [National Semiconductor (TI)]
Trang chủ  http://www.national.com
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LM2672 bảng dữ liệu(HTML) 2 Page - National Semiconductor (TI)

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Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage
45V
ON/OFF Pin Voltage
−0.1V
≤ V
SH
≤ 6V
Switch Voltage to Ground
−1V
Boost Pin Voltage
V
SW +8V
Feedback Pin Voltage
−0.3V
≤ V
FB
≤ 14V
ESD Susceptibility
Human Body Model (Note 2)
2 kV
Power Dissipation
Internally Limited
Storage Temperature Range
−65˚C to +150˚C
Lead Temperature
M Package
Vapor Phase (60s)
+215˚C
Infrared (15s)
+220˚C
N Package (Soldering, 10s)
+260˚C
Maximum Junction Temperature
+150˚C
Operating Ratings
Supply Voltage
6.5V to 40V
Temperature Range
−40˚C
≤ T
J
≤ +125˚C
Electrical Characteristics Specifications with standard type face are for T
J = 25˚C, and those in bold type
face apply over full Operating Temperature Range.
LM2672-3.3
Symbol
Parameter
Conditions
Typical
Min
Max
Units
(Note 4)
(Note 5)
(Note 5)
SYSTEM PARAMETERS Test Circuit Figure 2 (Note 3)
V
OUT
Output Voltage
V
IN = 8V to 40V, ILOAD = 20 mA to 1A
3.3
3.251/3.201
3.350/3.399
V
V
OUT
Output Voltage
V
IN = 6.5V to 40V, ILOAD = 20 mA to 500 mA
3.3
3.251/3.201
3.350/3.399
V
η
Efficiency
V
IN = 12V, ILOAD =1A
86
%
LM2672-5.0
Symbol
Parameter
Conditions
Typical
Min
Max
Units
(Note 4)
(Note 5)
(Note 5)
SYSTEM PARAMETERS Test Circuit Figure 2 (Note 3)
V
OUT
Output Voltage
V
IN = 8V to 40V, ILOAD = 20 mA to 1A
5.0
4.925/4.850
5.075/5.150
V
V
OUT
Output Voltage
V
IN = 6.5V to 40V, ILOAD = 20 mA to 500 mA
5.0
4.925/4.850
5.075/5.150
V
η
Efficiency
V
IN = 12V, ILOAD =1A
90
%
LM2672-12
Symbol
Parameter
Conditions
Typical
Min
Max
Units
(Note 4)
(Note 5)
(Note 5)
SYSTEM PARAMETERS Test Circuit Figure 2 (Note 3)
V
OUT
Output Voltage
V
IN = 15V to 40V, ILOAD = 20 mA to 1A
12
11.82/11.64
12.18/12.36
V
η
Efficiency
V
IN = 24V, ILOAD =1A
94
%
LM2672-ADJ
Symbol
Parameter
Conditions
Typ
Min
Max
Units
(Note 4)
(Note 5)
(Note 5)
SYSTEM PARAMETERS Test Circuit Figure 3 (Note 3)
V
FB
Feedback
Voltage
V
IN = 8V to 40V, ILOAD =20mAto1A
1.210
1.192/1.174
1.228/1.246
V
V
OUT Programmed for 5V
(see Circuit of Figure 3)
V
FB
Feedback
Voltage
V
IN = 6.5V to 40V, ILOAD =20mAto500 mA
1.210
1.192/1.174
1.228/1.246
V
V
OUT Programmed for 5V
(see Circuit of Figure 3)
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