參數(shù)資料
型號(hào)： LM2576-12MWC
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： 7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, UUC
封裝： WAFER
文件頁(yè)數(shù)： 21/27頁(yè)
文件大?。?/td> 741K
代理商： LM2576-12MWC
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
LM2576
45V
LM2576HV
63V
ON /OFF Pin Input Voltage
0.3V
≤ V ≤ +V
IN
Output Voltage to Ground
(Steady State)
1V
Power Dissipation
Internally Limited
Storage Temperature Range
65C to +150C
Maximum Junction Temperature
150C
Minimum ESD Rating
(C = 100 pF, R = 1.5 k
)2 kV
Lead Temperature
(Soldering, 10 Seconds)
260C
Operating Ratings
Temperature Range
LM2576/LM2576HV
40C
≤ T
J ≤ +125C
Supply Voltage
LM2576
40V
LM2576HV
60V
LM2576-3.3, LM2576HV-3.3
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
LM2576-3.3
Units
(Limits)
LM2576HV-3.3
Typ
Limit
(Note 2)
SYSTEM PARAMETERS (Note 3) Test Circuit
Figure 2
V
OUT
Output Voltage
V
IN = 12V, ILOAD = 0.5A
3.3
V
Circuit of
Figure 2
3.234
V(Min)
3.366
V(Max)
V
OUT
Output Voltage
6V
≤ V
IN ≤ 40V, 0.5A ≤ ILOAD ≤ 3A
3.3
V
LM2576
Circuit of
Figure 2
3.168/3.135
V(Min)
3.432/3.465
V(Max)
V
OUT
Output Voltage
6V
≤ V
IN ≤ 60V, 0.5A ≤ ILOAD ≤ 3A
3.3
V
LM2576HV
Circuit of
Figure 2
3.168/3.135
V(Min)
3.450/3.482
V(Max)
η
Efficiency
V
IN = 12V, ILOAD = 3A
75
%
LM2576-5.0, LM2576HV-5.0
Electrical Characteristics
Specifications with standard type face are for T
J = 25C, and those with Figure 2 boldface type apply over full Operating
Temperature Range.
Symbol
Parameter
Conditions
LM2576-5.0
Units
(Limits)
LM2576HV-5.0
Typ
Limit
(Note 2)
SYSTEM PARAMETERS (Note 3) Test Circuit
Figure 2
V
OUT
Output Voltage
V
IN = 12V, ILOAD = 0.5A
5.0
V
Circuit of
Figure 2
4.900
V(Min)
5.100
V(Max)
V
OUT
Output Voltage
0.5A
≤ I
LOAD ≤ 3A,
5.0
V
LM2576
8V
≤ V
IN ≤ 40V
4.800/4.750
V(Min)
Circuit of
Figure 2
5.200/5.250
V(Max)
V
OUT
Output Voltage
0.5A
≤ I
LOAD ≤ 3A,
5.0
V
LM2576HV
8V
≤ V
IN ≤ 60V
4.800/4.750
V(Min)
Circuit of
Figure 2
5.225/5.275
V(Max)
η
Efficiency
V
IN = 12V, ILOAD = 3A
77
%
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