LM2574 降压开关稳压器是单片集成电路,适用于步降开关稳压器(降压转换器)的简便设计。此系列的所有电路都可以驱动 0.5 A 负载,且具有卓越的线路和负载调节。此类器件提供 3.3 V、5.0 V、12 V、15 V 固定输出电压和可调输出版本。该降压开关稳压器适用于最大程度减少外部部件数量,可简化电源设计。适用于 LM2574 的标准电感器系列由若干不同电感器制造商提供。因为 LM2574 转换器是一款开关模式电源,其能效比受欢迎的三端子线性稳压器要高很多,尤其对于更高输入电压更是如此。在很多情况下,LM2574 稳压器的功耗非常低,以至于无需进行散热,或者其尺寸可以大幅减小。LM2574 功能包括指定输入电压和输出负载条件下保证输出电压的 4% 允差范围,振荡器频率为 +/-10%(0C 至 125C 范围为 +/-2%)。包含了外部关断,典型待机电流为 80 uA。输出开关包括按循环的电流限制以及高温关断,实现故障条件下的完整保护。
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LM2574DW-ADJR2G
Active
Pb
A
H
P
SOIC-16W
3
260
REEL
1000
N
Step-Down
Voltage Mode
7
40
1.23
0.5
85
52
$1.0485
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LM2574N-12G
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LM2574N-5G
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LM2574N-ADJG
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可靠性数据
Die Related Summary Data
Device: LM2574DW-ADJR2G
Equivalent to wafer fab process: BP STD LINEAR
产品技术
产品技术
等效器件小时
平均故障间隔时间/平均无故障时间(按小时计算)
FITS
BP STD LINEAR
10
12120914040
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Re-calculate Data
Data is based on the following assumptions.
Note: The temperature and confidence level may be adjusted to your requirements.
Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)