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LM2599 Datasheet(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM2599
Description  SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator, with Features
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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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 (V
IN)
45V
SD /SS Pin Input Voltage (Note 2)
6V
Delay Pin Voltage (Note 2)
1.5V
Flag Pin Voltage
−0.3
≤ V ≤45V
Feedback Pin Voltage
−0.3
≤ V ≤+25V
Output Voltage to Ground
(Steady State)
−1V
Power Dissipation
Internally limited
Storage Temperature Range
−65˚C to +150˚C
ESD Susceptibility
Human Body Model (Note 3)
2 kV
Lead Temperature
S Package
Vapor Phase (60 sec.)
+215˚C
Infrared (10 sec.)
+245˚C
T Package (Soldering, 10 sec.)
+260˚C
Maximum Junction Temperature
+150˚C
Operating Conditions
Temperature Range
−40˚C
≤ T
J ≤ +125˚C
Supply Voltage
4.5V to 40V
LM2599-3.3
Electrical Characteristics
Specifications with standard type face are for T
J = 25˚C, and those with boldface type apply over full Operating Tempera-
ture Range.
Symbol
Parameter
Conditions
LM2599-3.3
Units
(Limits)
Typ
Limit
(Note 4)
(Note 5)
SYSTEM PARAMETERS (Note 6) 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
%
LM2599-5.0
Electrical Characteristics
Specifications with standard type face are for T
J = 25˚C, and those with boldface type apply over full Operating Tempera-
ture Range.
Symbol
Parameter
Conditions
LM2599-5.0
Units
(Limits)
Typ
Limit
(Note 4)
(Note 5)
SYSTEM PARAMETERS (Note 6) Test Circuit
Figure 1
V
OUT
Output Voltage
7V
≤ V
IN ≤ 40V, 0.2A ≤ ILOAD ≤ 3A
5
V
4.800/4.750
V(min)
5.200/5.250
V(max)
η
Efficiency
V
IN = 12V, ILOAD = 3A
80
%
www.national.com
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