參數(shù)資料
型號(hào)： LM2574HVADJMWC
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： 1.8 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, UUC
封裝： WAFER
文件頁(yè)數(shù)： 23/33頁(yè)
文件大?。?/td> 814K
代理商： LM2574HVADJMWC
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
LM2574
45V
LM2574HV
63V
ON /OFF Pin Input Voltage
0.3V
≤ V ≤ +V
IN
Output Voltage to Ground
(Steady State)
1V
Minimum ESD Rating
(C = 100 pF, R = 1.5 k
)2 kV
Storage Temperature Range
65C to +150C
Lead Temperature
(Soldering, 10 seconds)
260C
Maximum Junction Temperature
150C
Power Dissipation
Internally Limited
Operating Ratings
Temperature Range
LM2574/LM2574HV
40C
≤ T
J ≤ +125C
Supply Voltage
LM2574
40V
LM2574HV
60V
LM2574-3.3, LM2574HV-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
LM2574-3.3
Units
(Limits)
LM2574HV-3.3
Typ
Limit
(Note 2)
SYSTEM PARAMETERS (Note 3) Test Circuit
Figure 2
V
OUT
Output Voltage
V
IN = 12V, ILOAD = 100 mA
3.3
V
3.234
V(Min)
3.366
V(Max)
V
OUT
Output Voltage
4.75V
≤ V
IN ≤ 40V, 0.1A ≤ ILOAD ≤ 0.5A
3.3
V
LM2574
3.168/3.135
V(Min)
3.432/3.465
V(Max)
V
OUT
Output Voltage
4.75V
≤ V
IN ≤ 60V, 0.1A ≤ ILOAD ≤ 0.5A
3.3
LM2574HV
3.168/3.135
V(Min)
3.450/3.482
V(Max)
η
Efficiency
V
IN = 12V, ILOAD = 0.5A
72
%
LM2574-5.0, LM2574HV-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
LM2574-5.0
Units
(Limits)
LM2574HV-5.0
Typ
Limit
(Note 2)
SYSTEM PARAMETERS (Note 3) Test Circuit
Figure 2
V
OUT
Output Voltage
V
IN = 12V, ILOAD = 100 mA
5
V
4.900
V(Min)
5.100
V(Max)
V
OUT
Output Voltage
7V
≤ V
IN ≤ 40V, 0.1A ≤ ILOAD ≤ 0.5A
5
V
LM2574
4.800/4.750
V(Min)
5.200/5.250
V(Max)
V
OUT
Output Voltage
7V
≤ V
IN ≤ 60V, 0.1A ≤ ILOAD ≤ 0.5A
5
LM2574HV
4.800/4.750
V(Min)
5.225/5.275
V(Max)
η
Efficiency
V
IN = 12V, ILOAD = 0.5A
77
%
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相關(guān)PDF資料
PDF描述
LM2574HVN-3.3/NOPB 1.8 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PDIP8
LM2574-5.0MWC 1.8 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, UUC
LM2574-ADJMWC 1.8 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, UUC
LM2574N-15/NOPB 1.8 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PDIP8
LM2574M-15/NOPB 1.8 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PDSO14
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LM2574HVM-15/NOPB 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
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