本平台电子爱好着纯手工中文简译:	截至2020/5/17日,支持英文词汇500个

www.德州仪器.com PARAMETERMEASUREMENTINFORMATION 应用加载电流加载电压 ∆ V L ∆ I L ∆ V L = ∆ I L × 等效串联电阻 ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ 0 1 2 3 4 54.53.52.51.50.5 0 0.01 0.015 0.02 0.025 0.03 0.035 0.04 ✂✁✂✁✂ 200 µ F ✂✁✂✁✂ 1000 µ F 1/等效串联电阻 0.005 ✂✁✂✁✂ 400 µ F 不推荐推荐最小值等效串联电阻潜在的 instability 区域的最好的稳固 ✂✁✂✁✂ ✂✁✂✁✂ 100 µ F ✂✁✂✁✂ ✂✁✂✁✂ 22 µ F ✂✁✂✁✂ ✂✁✂✁✂ 10 µ F ✁ C L 稳固 − ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✁ ✂✁✂✁✂✁✂✁✂✁✂✁✂ ✂✁✂✁✂✁✂✁✂✁✂✁✂ 最大值等效串联电阻 boundary ✂✁✂✁✂✁✂✁✂✁✂✁✂ ✂✁✂✁✂✁✂✁✂✁✂✁✂ 区域的最好的稳固 ✂✁✂✁✂✁✂ 最小值等效串联电阻 ✂✁✂✁✂✁✂ ✂✁✂✁✂✁✂ Boundary 3 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 0.10 0.2 0.3 0.4 0.5 I L − 加载电流范围 − 一个这个区域不推荐为运作 C L = 10 µ F C I = 0.1 µ F f = 120 hz ✂✁✂✁✂✁✂✁✂✁✂✁✂✁✂✁✂ 潜在的 instability 区域相等的序列阻抗 (等效串联电阻) − Ω tl750m,tl751mseries 低-dropoutvoltageregulators SLVS021J–JANUARY1988–REVISEDOCTOBER2005 thetl750mxxisalow-dropoutregulator.thismeansthatthecapacitanceloadingisimportanttothe performanceoftheregulatorbecauseitisavitalpartofthecontrolloop.thecapacitorvalueandtheequivalent seriesresistance(等效串联电阻)bothaffectthecontrolloopandmustbedefinedfortheloadrangeandthetemperature 范围.Figure1和Figure2canestablishthecapacitancevalueandESRrangeforthebestregulator 效能. Figure1showstherecommendedrangeofesrforagivenloadwitha10- µ fcapacitorontheoutput.这个 figurealsoshowsamaximumESRlimitof2 Ω andaload-dependentminimumesrlimit. forapplicationswithvaryingloads,thelightestloadconditionshouldbechosenbecauseitistheworstcase. Figure2showstherelationshipofthereciprocalofESRtothesquarerootofthecapacitancewithaminimum capacitancelimitof10 µ FandamaximumESRlimitof2 Ω .thisfigureestablishestheamountthattheminimum ESRlimitshowninFigure1canbeadjustedfordifferentcapacitorvalues. forexample,wheretheminimumloadneededis200ma,Figure1suggestsanesrrangeof0.8 Ω to2 Ω 为 10 µ f.Figure2showsthatchangingthecapacitorfrom10 µ Fto400 µ FcanchangetheESRminimumby greaterthan3/0.5(or6).因此,thenewminimumesrvalueis0.8/6(or0.13 Ω ).thisallowsanesrrange of0.13 Ω to2 Ω ,achievinganexpandedesrrangebyusingalargercapacitorattheoutput.forbetterstability inlow-currentapplications,asmallresistanceplacedinserieswiththecapacitor(看Table1)isrecommended, sothatESRsbetterapproximatethoseshowninFigure1和Figure2. table1.compensationforincreasedstabilityatlowcurrents ESRPARTADDITIONAL MANUFACTURERCAPACITANCE TYPNUMBERRESISTANCE <br/> AVX15 µ f0.9 Ω TAJB156M010S1 Ω <br/> <br/> KEMET33 µ f0.6 Ω t491d336m010as0.5 Ω <br/> OUTPUTCAPACITOR<br/> equivalentseriesresistance(等效串联电阻)稳固 vsvs loadcurrentrangeequivalentseriesresistance(等效串联电阻) figure1.figure2. 6

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