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): 6/27頁
文件大?。?/td> 725K
代理商: LM1575
LM1575-5.0, LM2575-5.0, LM2575HV-5.0
Electrical Characteristics
(Continued)
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)
η
Efficiency
V
IN
= 12V, I
LOAD
= 1A
77
%
LM1575-12, LM2575-12, LM2575HV-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
Typ
LM1575-12
LM2575-12
LM2575HV-12
Limit
(Note 3)
Units
(Limits)
Limit
(Note 2)
SYSTEM PARAMETERS
(Note 4) Test Circuit
Figure 2
V
OUT
Output Voltage
V
IN
= 25V, I
LOAD
= 0.2A
Circuit of
Figure 2
12
V
11.88
12.12
11.76
12.24
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,
15V
V
IN
40V
Circuit of
Figure 2
0.2A
I
LOAD
1A,
15V
V
IN
60V
Circuit of
Figure 2
V
IN
= 15V, I
LOAD
= 1A
12
11.64/
11.52
12.36/
12.48
11.52/
11.40
12.48/
12.60
V
OUT
Output Voltage
LM2575HV
12
11.64/
11.52
12.42/
12.54
11.52/
11.40
12.54/
12.66
η
Efficiency
88
LM1575-15, LM2575-15, LM2575HV-15
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
LM1575-15
LM2575-15
LM2575HV-15
Limit
(Note 3)
Units
(Limits)
Limit
(Note 2)
SYSTEM PARAMETERS
(Note 4) Test Circuit
Figure 2
V
OUT
Output Voltage
V
IN
= 30V, I
LOAD
= 0.2A
Circuit of
Figure 2
15
V
14.85
15.15
14.70
15.30
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,
18V
V
IN
40V
Circuit of
Figure 2
0.2A
I
LOAD
1A,
18V
V
IN
60V
Circuit of
Figure 2
V
IN
= 18V, I
LOAD
= 1A
15
14.55/
14.40
15.45/
15.60
14.40/
14.25
15.60/
15.75
V
OUT
Output Voltage
LM2575HV
15
14.55/
14.40
15.525/
15.675
14.40/
14.25
15.68/
15.83
η
Efficiency
88
L
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