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LM2671 Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM2671
Description  SIMPLE SWITCHER Power Converter High Efficiency 500mA Step-Down Voltage Regulator with Features
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2671 Datasheet(HTML) 3 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
LLP Package (See AN-1187)
Maximum Junction Temperature
+150˚C
Operating Ratings
Supply Voltage
6.5V to 40V
Temperature Range
−40˚C
≤ T
J
≤ +125˚C
Electrical Characteristics
LM2671-3.3 Specifications with standard type face are for T
J = 25˚C, and those in bold type face apply over full
Operating Temperature Range.
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 500 mA
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 250 mA
3.3
3.251/3.201
3.350/3.399
V
η
Efficiency
V
IN = 12V, ILOAD = 500 mA
86
%
LM2671-5.0
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 500 mA
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 250 mA
5.0
4.925/4.850
5.075/5.150
V
η
Efficiency
V
IN = 12V, ILOAD = 500 mA
90
%
LM2671-12
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 500 mA
12
11.82/11.64
12.18/12.36
V
η
Efficiency
V
IN = 24V, ILOAD = 500 mA
94
%
LM2671-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 = 20mAto500 mA
1.210
1.192/1.174
1.228/1.246
V
V
OUT Programmed for 5V
(see Circuit of Figure 3)
www.national.com
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