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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.
Maximum Supply Voltage
45V
ON /OFF Pin Input Voltage
0.3
≤ V ≤ +25V
Feedback Pin Voltage
0.3
≤ V ≤+25V
Output Voltage to Ground
(Steady State)
1V
Power Dissipation
Internally limited
Storage Temperature Range
65C to +150C
ESD Susceptibility
Human Body Model (Note 2)
2 kV
Lead Temperature
S Package
Vapor Phase (60 sec.)
+215C
Infrared (10 sec.)
+245C
T Package (Soldering, 10 sec.)
+260C
Maximum Junction Temperature
+150C
Operating Conditions
Temperature Range
40C
≤ T
J ≤ +125C
Supply Voltage
4.5V to 40V
LM2596-3.3
Electrical Characteristics
Specifications with standard type face are for T
J = 25C, and those with boldface type apply over full Operating Tempera-
ture Range
Symbol
Parameter
Conditions
LM2596-3.3
Units
(Limits)
Typ
(Note 3)
Limit
(Note 4)
SYSTEM PARAMETERS (Note 5) Test Circuit
Figure 1
V
OUT
Output Voltage
4.75V
≤ V
IN ≤ 40V, 0.2A ≤ ILOAD ≤ 3A
3.3
V
3.168/3.135
V(min)
3.432/3.465
V(max)
η
Efficiency
V
IN = 12V, ILOAD =3A
73
%
LM2596-5.0
Electrical Characteristics
Specifications with standard type face are for T
J = 25C, and those with boldface type apply over full Operating Tempera-
ture Range
Symbol
Parameter
Conditions
LM2596-5.0
Units
(Limits)
Typ
(Note 3)
Limit
(Note 4)
SYSTEM PARAMETERS (Note 5) Test Circuit
Figure 1
V
OUT
Output Voltage
7V
≤ V
IN ≤ 40V, 0.2A ≤ ILOAD ≤ 3A
5.0
V
4.800/4.750
V(min)
5.200/5.250
V(max)
η
Efficiency
V
IN = 12V, ILOAD =3A
80
%
LM2596-12
Electrical Characteristics
Specifications with standard type face are for T
J = 25C, and those with boldface type apply over full Operating Tempera-
ture Range
Symbol
Parameter
Conditions
LM2596-12
Units
(Limits)
Typ
(Note 3)
Limit
(Note 4)
SYSTEM PARAMETERS (Note 5) Test Circuit
Figure 1
V
OUT
Output Voltage
15V
≤ V
IN ≤ 40V, 0.2A ≤ ILOAD ≤ 3A
12.0
V
11.52/11.40
V(min)
12.48/12.60
V(max)
η
Efficiency
V
IN = 25V, ILOAD =3A
90
%
LM2596
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