参数资料
型号: LM2576-3.3MDC
厂商: NATIONAL SEMICONDUCTOR CORP
元件分类: 稳压器
英文描述: 7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, UUC
封装: DIE
文件页数: 22/27页
文件大小: 741K
代理商: LM2576-3.3MDC
LM2576-12, LM2576HV-12
Electrical Characteristics
Specifications with standard type face are for T
J = 25C, and those with boldface type apply over full Operating Temperature
Range.
Symbol
Parameter
Conditions
LM2576-12
Units
(Limits)
LM2576HV-12
Typ
Limit
(Note 2)
SYSTEM PARAMETERS (Note 3) Test Circuit
Figure 2
V
OUT
Output Voltage
V
IN = 25V, ILOAD = 0.5A
12
V
Circuit of
Figure 2
11.76
V(Min)
12.24
V(Max)
V
OUT
Output Voltage
0.5A
≤ I
LOAD ≤ 3A,
12
V
LM2576
15V
≤ V
IN ≤ 40V
11.52/11.40
V(Min)
Circuit of
Figure 2
12.48/12.60
V(Max)
V
OUT
Output Voltage
0.5A
≤ I
LOAD ≤ 3A,
12
V
LM2576HV
15V
≤ V
IN ≤ 60V
11.52/11.40
V(Min)
Circuit of
Figure 2
12.54/12.66
V(Max)
η
Efficiency
V
IN = 15V, ILOAD = 3A
88
%
LM2576-15, LM2576HV-15
Electrical Characteristics
Specifications with standard type face are for T
J = 25C, and those with boldface type apply over full Operating Temperature
Range.
Symbol
Parameter
Conditions
LM2576-15
Units
(Limits)
LM2576HV-15
Typ
Limit
(Note 2)
SYSTEM PARAMETERS (Note 3) Test Circuit
Figure 2
V
OUT
Output Voltage
V
IN = 25V, ILOAD = 0.5A
15
V
Circuit of
Figure 2
14.70
V(Min)
15.30
V(Max)
V
OUT
Output Voltage
0.5A
≤ I
LOAD ≤ 3A,
15
V
LM2576
18V
≤ V
IN ≤ 40V
14.40/14.25
V(Min)
Circuit of
Figure 2
15.60/15.75
V(Max)
V
OUT
Output Voltage
0.5A
≤ I
LOAD ≤ 3A,
15
V
LM2576HV
18V
≤ V
IN ≤ 60V
14.40/14.25
V(Min)
Circuit of
Figure 2
15.68/15.83
V(Max)
η
Efficiency
V
IN = 18V, ILOAD = 3A
88
%
LM2576-ADJ, LM2576HV-ADJ
Electrical Characteristics
Specifications with standard type face are for T
J = 25C, and those with boldface type apply over full Operating Temperature
Range.
Symbol
Parameter
Conditions
LM2576-ADJ
Units
(Limits)
LM2576HV-ADJ
Typ
Limit
(Note 2)
SYSTEM PARAMETERS (Note 3) Test Circuit
Figure 2
V
OUT
Feedback Voltage
V
IN = 12V, ILOAD = 0.5A
1.230
V
OUT = 5V,
1.217
V(Min)
Circuit of
Figure 2
1.243
V(Max)
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