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參數(shù)資料
| 型號： | LM2594 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Octal Buffers/Drivers With 3-State Outputs 20-SOIC -40 to 85 |
| 中文描述： | SIMPLE SWITCHER系列電源轉(zhuǎn)換器150千赫0.5A的降壓穩(wěn)壓器 |
| 文件頁數(shù)： | 3/28頁 |
| 文件大?。?/td> | 740K |
| 代理商： | LM2594 |
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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
LM2594
LM2594HV
ON /OFF Pin Input Voltage
Feedback Pin Voltage
Output Voltage to Ground
(Steady State)
Power Dissipation
Storage Temperature Range
ESD Susceptibility
45V
60V
0.3
≤
V
≤
+25V
0.3
≤
V
≤
+25V
1V
Internally limited
65C to +150C
Human Body Model (Note 2)
Lead Temperature
M8 Package
Vapor Phase (60 sec.)
Infrared (15 sec.)
N Package (Soldering, 10 sec.)
Maximum Junction Temperature
2 kV
+215C
+220C
+260C
+150C
Operating Conditions
Temperature Range
Supply Voltage
40C
≤
T
J
+125C
LM2594
LM2594HV
4.5V to 40V
4.5V to 60V
LM2594/LM2594HV-3.3
Electrical Characteristics
Specifications with standard type face are for T
= 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
Typ
(Note 3)
Units
(Limits)
Limit
(Note 4)
SYSTEM PARAMETERS
(Note 5) Test Circuit Figure 1
V
OUT
Output Voltage
4.75V
≤
V
IN
≤
V
INmax
, 0.1A
≤
I
LOAD
≤
0.5A
3.3
V
3.168/
3.135
3.432/
3.465
V(min)
V(max)
%
η
Efficiency
V
IN
= 12V, I
LOAD
= 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
Typ
(Note 3)
Units
(Limits)
Limit
(Note 4)
SYSTEM PARAMETERS
(Note 5) Test Circuit Figure 1
V
OUT
Output Voltage
7V
≤
V
IN
≤
V
INmax
, 0.1A
≤
I
LOAD
≤
0.5A
5.0
V
4.800/
4.750
5.200/
5.250
V(min)
V(max)
%
η
Efficiency
V
IN
= 12V, I
LOAD
= 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
Typ
(Note 3)
Units
(Limits)
Limit
(Note 4)
SYSTEM PARAMETERS
(Note 5) Test Circuit Figure 1
V
OUT
Output Voltage
15V
≤
V
IN
≤
V
INmax
, 0.1A
≤
I
LOAD
≤
0.5A
12.0
V
11.52/
11.40
12.48/
12.60
V(min)
V(max)
%
η
Efficiency
V
IN
= 25V, I
LOAD
= 0.5A
88
L
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