參數(shù)資料
型號： LM2594-ADJMDC
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： 1.4 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, UUC
封裝： DIE
文件頁數(shù)： 23/33頁
文件大小： 837K
代理商： LM2594-ADJMDC
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
LM2594
45V
LM2594HV
60V
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
M8 Package
Vapor Phase (60 sec.)
+215C
Infrared (15 sec.)
+220C
N Package (Soldering, 10 sec.)
+260C
Maximum Junction Temperature
+150C
Operating Conditions
Temperature Range
40C
≤ T
J +125C
Supply Voltage
LM2594
4.5V to 40V
LM2594HV
4.5V to 60V
LM2594/LM2594HV-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.V
INmax= 40V for the LM2594 and 60V for the LM2594HV.
Symbol
Parameter
Conditions
LM2594/LM2594HV-3.3
Units
(Limits)
Typ
Limit
(Note 3)
(Note 4)
SYSTEM PARAMETERS (Note 5) Test Circuit
Figure 1
V
OUT
Output Voltage
4.75V
≤ V
IN ≤ VINmax, 0.1A ≤ ILOAD ≤ 0.5A
3.3
V
3.168/3.135
V(min)
3.432/3.465
V(max)
η
Efficiency
V
IN = 12V, ILOAD = 0.5A
80
%
LM2594/LM2594HV-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
LM2594/LM2594HV-5.0
Units
(Limits)
Typ
Limit
(Note 3)
(Note 4)
SYSTEM PARAMETERS (Note 5) Test Circuit
Figure 1
V
OUT
Output Voltage
7V
≤ V
IN ≤ VINmax, 0.1A ≤ ILOAD ≤ 0.5A
5.0
V
4.800/4.750
V(min)
5.200/5.250
V(max)
η
Efficiency
V
IN = 12V, ILOAD = 0.5A
82
%
LM2594/LM2594HV-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
LM2594/LM2594HV-12
Units
(Limits)
Typ
Limit
(Note 3)
(Note 4)
SYSTEM PARAMETERS (Note 5) Test Circuit
Figure 1
V
OUT
Output Voltage
15V
≤ V
IN ≤ VINmax, 0.1A ≤ ILOAD ≤ 0.5A
12.0
V
11.52/11.40
V(min)
12.48/12.60
V(max)
η
Efficiency
V
IN = 25V, ILOAD = 0.5A
88
%
LM2594/LM2594HV
www.national.com
3
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LM2594-ADJMWC 1.4 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, UUC
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