參數(shù)資料
型號: LM1575
廠商: National Semiconductor Corporation
英文描述: SIMPLE SWITCHER 1A Step-Down Voltage Regulator
中文描述: 的SIMPLE SWITCHER 1A步降穩(wěn)壓器
文件頁數(shù): 5/27頁
文件大?。?/td> 725K
代理商: LM1575
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
LM1575/LM2575
LM2575HV
ON /OFF Pin Input Voltage
Output Voltage to Ground
(Steady State)
Power Dissipation
Storage Temperature Range
Maximum Junction Temperature
45V
63V
0.3V
V
+V
IN
1V
Internally Limited
65C to +150C
150C
Minimum ESD Rating
(C = 100 pF, R = 1.5 k
)
Lead Temperature
(Soldering, 10 sec.)
2 kV
260C
Operating Ratings
Temperature Range
LM1575
LM2575/LM2575HV
Supply Voltage
LM1575/LM2575
LM2575HV
55C
T
J
+150C
40C
T
J
+125C
40V
60V
LM1575-3.3, LM2575-3.3, LM2575HV-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
Typ
LM1575-3.3
LM2575-3.3
LM2575HV-3.3
Limit
(Note 3)
Units
(Limits)
Limit
(Note 2)
SYSTEM PARAMETERS
(Note 4) Test Circuit
Figure 2
V
OUT
Output Voltage
V
IN
= 12V, I
LOAD
= 0.2A
Circuit of
Figure 2
3.3
V
3.267
3.333
3.234
3.366
V(Min)
V(Max)
V
V(Min)
V(Max)
V
V(Min)
V(Max)
%
V
OUT
Output Voltage
LM1575/LM2575
4.75V
V
IN
40V, 0.2A
I
LOAD
1A
Circuit of
Figure 2
3.3
3.200/
3.168
3.400/
3.432
3.168/
3.135
3.432/
3.465
V
OUT
Output Voltage
LM2575HV
4.75V
V
IN
60V, 0.2A
I
LOAD
1A
Circuit of
Figure 2
3.3
3.200/
3.168
3.416/
3.450
3.168/
3.135
3.450/
3.482
η
Efficiency
V
IN
= 12V, I
LOAD
= 1A
75
LM1575-5.0, LM2575-5.0, LM2575HV-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
Typ
LM1575-5.0
LM2575-5.0
LM2575HV-5.0
Limit
(Note 3)
Units
(Limits)
Limit
(Note 2)
SYSTEM PARAMETERS
(Note 4) Test Circuit
Figure 2
V
OUT
Output Voltage
V
IN
= 12V, I
LOAD
= 0.2A
Circuit of
Figure 2
5.0
V
4.950
5.050
4.900
5.100
V(Min)
V(Max)
V
V(Min)
V(Max)
V
V(Min)
V(Max)
V
OUT
Output Voltage
LM1575/LM2575
0.2A
I
LOAD
1A,
8V
V
IN
40V
Circuit of
Figure 2
0.2A
I
LOAD
1A,
8V
V
IN
60V
Circuit of
Figure 2
5.0
4.850/
4.800
5.150/
5.200
4.800/
4.750
5.200/
5.250
V
OUT
Output Voltage
LM2575HV
5.0
4.850/
4.800
5.175/
5.225
4.800/
4.750
5.225/
5.275
L
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