【经验】如何设计RP202x系列LDO稳压器的电路，保证设备安全稳定地运行？
RP202x系列是NISSHINBO (日清纺)推出的一款低功耗且带高速模式的LDO稳压器，输入电压最高可达5.25V，在自动切换模式下，该系列器件根据输出电流可以自动切换到ECO功能的快速响应模式或低功耗模式。在低功耗模式下，电源电流低至2.5μA，可广泛用于对功耗要求高的手持设备。本文主要介绍在应用该稳压器设计电路时的技术说明。
图1 RP202x典型应用电路图
应用说明：
·相位补偿
·在该设备中，提供相位补偿以确保即使在负载电流变化时也能稳定运行。为此，在电路中使用0.47μF或更大的电容器C2，并且要求ESR（等效串联电阻）良好。注意，如果额外的陶瓷电容与输出引脚并联，并带有用于相位补偿的输出电容，则操作可能不稳定。因此，使用与PCB上相同的外部元件来测试IC。
·PCB布局
VDD线和GND线的阻抗必须尽可能低。 高阻抗可能导致不稳定的操作或噪声拾取。 0.47μF或更大的输出电容应置于VDD和GND之间。 从VDD到输出电容的线路，以及从输出电容到GND的线路必须尽可能短。
输出电容作为相位补偿放置在VOUT和GND之间。 从VOUT到输出电容的线路，以及从电容器到GND的线路必须尽可能短。 请参考下面的“基本测试电路”。
图2 输入输出电压差
等效串联电阻（ESR）与输出电流关系：
IOUT（输出电流）与输出电容的ESR之间的关系如下所示。
平均白噪声电平低于40μV时在图中标记为阴影区域。
CMOS LDO稳压器 测量条件：
·噪声频带：10Hz至2MHz
·测量温度：−40°C to +85°C
·C1,C2:0.47μF
图3 RP202x输出电容ESR值与输出电流关系
关于Nisshinbo (日清纺)
原新日本无线（NJR）株式会社和原理光微电子（原RICOH）株式会社已于2022年1月合并，并以⽇清纺微电⼦（Nisshinbo）株式会社的名义运营。日清纺（Nisshinbo）整合两家公司的优势，完善 "连接一切 "的技术，并努力作为一个模拟解决方案的供应商进一步成长和发展，为实现超智能社会做出贡献。
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R1191x SERIES 300mA LDO REGULATOR with the Reverse Current Protection
型号- R1191N063D,R1191N075D,R1191N051B,R1191N087D,R1191N063B,R1191N099D,R1191N075B,R1191N051D,R1191H057B,R1191H069D,R1191H045B,R1191H069B,R1191N087B,R1191N099B,R1191H130D,R1191H142D,R1191H033D,R1191H130B,R1191H021D,R1191H142B,R1191H057D,R1191H033B,R1191H045D,R1191H021B,R1191N074D,R1191N050B,R1191N086D,R1191N062B,R1191N098D,R1191N074B,R1191N086B,R1191N050D,R1191N062D,R1191H068B,R1191H056B,R1191N098B,R1191H020D,R1191H141D,R1191H044D,R1191H020B,R1191H141B,R1191H032D,R1191H068D,R1191H044B,R1191HXXX∗-T1-FE,R1191H056D,R1191H032B,R1191N085D,R1191N061B,R1191N097D,R1191N073B,R1191N085B,R1191N097B,R1191N061D,R1191N073D,R1191H144B,R1191H059D,R1191H035B,R1191H047D,R1191H023B,R1191H059B,R1191H047B,R1191H120D,R1191H132D,R1191H144D,R1191H120B,R1191H035D,R1191H132B,R1191H023D,R1191N096D,R1191N072B,R1191N084B,R1191N096B,R1191N060D,R1191N072D,R1191N084D,R1191N060B,R1191H046B,R1191H058D,R1191H034B,R1191H058B,R1191H131D,R1191H022D,R1191H143D,R1191H131B,R1191H046D,R1191H022B,R1191H143B,R1191H034D,R1191N083B,R1191N095B,R1191N071D,R1191N083D,R1191N095D,R1191N071B,R1191H089B,R1191H150D,R1191H053D,R1191H150B,R1191H041D,R1191H077D,R1191H053B,R1191H065D,R1191H041B,R1191H089D,R1191H077B,R1191H065B,R1191N094B,R1191N070D,R1191N082D,R1191N094D,R1191N070B,R1191N082B,R1191H040D,R1191H064D,R1191H040B,R1191H052D,R1191H064B,R1191H088D,R1191H076D,R1191H052B,R1191H088B,R1191H076B,R1191N081D,R1191N093D,R1191N081B,R1191N093B,R1191H079B,R1191H067B,R1191H140D,R1191H031D,R1191H140B,R1191H055D,R1191H031B,R1191H043D,R1191H079D,R1191H055B,R1191H067D,R1191H043B,R1191N080D,R1191N092D,R1191N080B,R1191N092B,R1191H078B,R1191H042D,R1191H030D,R1191H066D,R1191H042B,R1191H054D,R1191H030B,R1191H066B,R1191H078D,R1191H054B,R1191N091D,R1191N091B,R1191H073D,R1191H061D,R1191H085D,R1191H073B,R1191H097D,R1191H061B,R1191H085B,R1191H097B,R1191N090D,R1191N090B,R1191X150D,R1191H060B,R1191H084D,R1191H072D,R1191H096D,R1191H084B,R1191H072B,R1191H096B,R1191H060D,R1191X050D,R1191H051D,R1191H075D,R1191H051B,R1191H063D,R1191H087D,R1191H075B,R1191H099D,R1191H063B,R1191H087B,R1191H099B,R1191X050X,R1191H062D,R1191H050D,R1191H062B,R1191H086D,R1191H074D,R1191H050B,R1191H098D,R1191N109D,R1191H086B,R1191H074B,R1191H098B,R1191N109B,R1191X020D,R1191H081B,R1191H093B,R1191N108D,R1191N108B,R1191H081D,R1191H093D,R1191N107D,R1191H092B,R1191X SERIES,R1191X020X,R1191N119D,R1191N107B,R1191N119B,R1191H080D,R1191H092D,R1191H080B,R1191N106D,R1191N118D,R1191H083D,R1191H071B,R1191X150X,R1191H095D,R1191H083B,R1191H095B,R1191N106B,R1191N118B,R1191H071D,R1191N105D,R1191N117D,R1191N129D,R1191N105B,R1191H094D,R1191H082B,R1191H070B,R1191H094B,R1191N117B,R1191N129B,R1191NXXX∗-TR-FE,R1191LXXX∗-TR,R1191H082D,R1191H070D,R1191HXXXD,R1191N104D,R1191N116D,R1191N128D,R1191N104B,R1191N116B,R1191N128B,R1191X120X,R1191H109B,R1191N115D,R1191N127D,R1191N103B,R1191N139D,R1191N115B,R1191N127B,R1191N103D,R1191H109D,R1191N139B,R1191N126D,R1191N102B,R1191N138D,R1191N114B,R1191N126B,R1191N029D,R1191N138B,R1191N102D,R1191N114D,R1191N029B,R1191H091D,R1191X033X,R1191H091B,R1191N137D,R1191N113B,R1191N149D,R1191N125B,R1191N028D,R1191N137B,R1191N149B,R1191N028B,R1191N101D,R1191N113D,R1191N125D,R1191N101B,R1191H090D,R1191H090B,R1191N148D,R1191N124B,R1191N027D,R1191N136B,R1191N039D,R1191N148B,R1191N027B,R1191N039B,R1191N100D,R1191H106D,R1191N112D,R1191H118D,R1191N124D,R1191N100B,R1191H106B,R1191N136D,R1191N112B,R1191H118B,R1191N135B,R1191N038D,R1191N147B,R1191N026B,R1191N038B,R1191H105D,R1191N111D,R1191H117D,R1191N123D,R1191H129D,R1191H105B,R1191N135D,R1191N111B,R1191H117B,R1191N147D,R1191N123B,R1191N026D,R1191H129B,R1191H108B,R1191N110D,R1191N146B,R1191N049D,R1191N025B,R1191N037B,R1191N049B,R1191N122D,R1191NXXXD,R1191N134D,R1191N110B,R1191N146D,R1191N122B,R1191N025D,R1191H108D,R1191N134B,R1191N037D,R1191NXXXB,R1191X025X,R1191H119B,R1191N121D,R1191N036B,R1191N048B,R1191N133D,R1191N145D,R1191N121B,R1191N024D,R1191H107D,R1191N133B,R1191N036D,R1191H119D,R1191N145B,R1191N048D,R1191N024B,R1191H107B,R1191N120D,R1191N132D,R1191N047B,R1191H102D,R1191N059B,R1191H114D,R1191H126D,R1191H102B,R1191H138D,R1191H114B,R1191N144D,R1191N120B,R1191N023D,R1191H126B,R1191N132B,R1191N035D,R1191H138B,R1191H029D,R1191N144B,R1191N047D,R1191N023B,R1191N059D,R1191N035B,R1191H029B,R1191N131D,R1191N143D,R1191N022D,R1191N058B,R1191H113D,R1191H125D,R1191H101B,R1191H137D,R1191H113B,R1191H028D,R1191H149D,R1191H125B,R1191N131B,R1191N034D,R1191H137B,R1191H028B,R1191N143B,R1191N046D,R1191N022B,R1191H149B,R1191N058D,R1191N034B,R1191N046B,R1191H101D,R1191N130D,R1191N142D,R1191N021D,R1191N130B,R1191N033D,R1191N069B,R1191H104D,R1191H116D,R1191N142B,R1191N045D,R1191N021B,R1191H128D,R1191H104B,R1191N057D,R1191N033B,R1191H116B,R1191N069D,R1191N045B,R1191H128B,R1191N057B,R1191N141D,R1191N020D,R1191N032D,R1191N141B,R1191N044D,R1191N020B,R1191H103D,R1191H115D,R1191H127D,R1191H103B,R1191N056D,R1191N032B,R1191H139D,R1191H115B,R1191N068D,R1191N044B,R1191H127B,R1191N056B,R1191H139B,R1191N068B,R1191N140D,R1191N031D,R1191N140B,R1191N043D,R1191N055D,R1191N031B,R1191H146D,R1191H122B,R1191H037D
RP108J Series Low Input Voltage 3 A LDO Regulator for Automotive Applications
型号- RP108J251F,RP108J251E,RP108J251D,RP108J,RP108J251B,RP108JXX1*-T1-#E,RP108J081F,RP108J081D,RP108J081E,RP108J081B,RP108J121X,RP108J331X,RP108J301X,RP108J301D,RP108J301B,RP108J181X,RP108J151X,RP108JXX1X,RP108J151D,RP108J181B,RP108J151E,RP108J151B,RP108J121E,RP108J121F,RP108J331F,RP108J331E,RP108J121D,RP108J331D,RP108J301F,RP108J121B,RP108J331B,RP108J301E,RP108JXX1B,RP108JXX1D,RP108JXX1E,RP108J SERIES,RP108JXX1F,RP108J181E,RP108J181F,RP108J151F,RP108J181D,RP108J081X,RP108J281X,RP108J421X,RP108J251X
RP170x SERIES 300mA 10V INPUT LDO REGULATOR
型号- RP170X37XX,RP170X16XX,RP170X39XX,RP170X18XX,RP170HXX1∗-T1-FE,RP170X50XX,RP170X33XX,RP170X56XX,RP170X35XX,RP170X58XX,RP170X14XX,RP170X52XX,RP170X12XX,RP170X31XX,RP170X54XX,RP170QXX2∗-TR-FE,RP170X12XX5,RP170X27XX,RP170X48XX,RP170X29XX,RP170X SERIES,RP170X61XX,RP170X23XX,RP170X44XX,RP170X25XX,RP170X46XX,RP170X40XX,RP170X65XX,RP170X21XX,RP170X42XX,RP170X63XX,RP170X19XX,RP170XXXXB,RP170X15XX,RP170X38XX,RP170X59XX,RP170X17XX,RP170X,RP170XXXXD,RP170X34XX,RP170X55XX,RP170X36XX,RP170X57XX,RP170X13XX,RP170X30XX,RP170X51XX,RP170X32XX,RP170X53XX,RP170X26XX,RP170X49XX,RP170X28XX,RP170X18XX5,RP170X60XX,RP170NXX1∗-TR-FE,RP170X22XX,RP170X28XX5,RP170X45XX,RP170X24XX,RP170X47XX,RP170X41XX,RP170X64XX,RP170X20XX,RP170X43XX,RP170X62XX
RP114x SERIES 300 mA LDO REGULATOR
型号- RP114K101D,RP114K331D,RP114N081B,RP114K101B,RP114N081D,RP114Q302B5,RP114K181D,RP114K181B,RP114Q252D,RP114K331B,RP114Q252B,RP114N231B,RP114N231D,RP114K101B5,RP114K291B,RP114K291D,RP114Q122B5,RP114K211B,RP114Q362D,RP114K211D,RP114Q132B,RP114Q362B,RP114Q132D,RP114N121B,RP114N351B,RP114Q282D5,RP114N121D,RP114N351D,RP114K341B5,RP114K281B5,RP114X,RP114K171D,RP114K171B,RP114Q342D5,RP114K321B,RP114Q262D,RP114K321D,RP114Q262B,RP114N221D,RP114N221B,RP114N191D,RP114N191B,RP114K281B,RP114K281D,RP114Q122D5,RP114K201B,RP114Q142D,RP114K201D,RP114Q142B,RP114Q182B5,RP114N341B,RP114NXX1∗(Y)-TR-FE,RP114N111D,RP114N111B,RP114N341D,RP114N291D,RP114K341D5,RP114N291B,RP114K281D5,RP114Q082B,RP114K161D,RP114K161B,RP114K311B,RP114K311D,RP114Q082D,RP114KXX1B,RP114Q232B,RP114Q232D,RP114N211D,RP114N211B,RP114KXX1∗(Y)-TRB,RP114KXX1∗(Y)-TR,RP114N181D,RP114N181B,RP114K271B,RP114N101B5,RP114K271D,RP114Q192D,RP114Q192B,RP114Q342B,RP114Q112D,RP114Q182D5,RP114Q342D,RP114Q112B,RP114N101D,RP114N331D,RP114N101B,RP114N331B,RP114Q302D5,RP114N281D,RP114K301B,RP114K151D,RP114K151B,RP114K301D,RP114Q092D,RP114Q092B,RP114Q242B,RP114Q242D,RP114N201B,RP114K131D5,RP114N201D,RP114N281B,RP114K301B5,RP114K261B,RP114N171D,RP114K261D,RP114N101D5,RP114QXX2BD,RP114Q122B,RP114Q352B,RP114Q122D,RP114Q352D,RP114K181D5,RP114N321D,RP114N321B,RP114N171B,RP114N271D,RP114N281B5,RP114N341B5,RP114Q292D,RP114K141D,RP114K141B,RP114Q292B,RP114Q212D,RP114X SERIES,RP114Q212B,RP114K131B5,RP114K301D5,RP114N271B,RP114K251B,RP114N161D,RP114K251D,RP114Q172B,RP114Q172D,RP114Q322D,RP114N311B,RP114Q322B,RP114K181B5,RP114N311D,RP114K121D5,RP114N161B,RP114K361B,RP114K361D,RP114N281D5,RP114N341D5,RP114K131D,RP114K131B,RP114Q222D,RP114K171D5,RP114Q222B,RP114QXX2∗(Y)-TR-FE,RP114N261D,RP114N261B,RP114K241B,RP114K241D,RP114N121B5,RP114Q102B5,RP114K091B,RP114Q182D,RP114Q182B,RP114Q102D,RP114Q332D,RP114N301B,RP114K091D,RP114Q102B,RP114Q332B,RP114NXX1B,RP114N301D,RP114N151D,RP114K121B5,RP114N151B,RP114K121B,RP114K351B,RP114K351D,RP114Q342B5,RP114N301B5,RP114Q272B,RP114K121D,RP114Q272D,RP114K171B5,RP114N251D,RP114K111D5,RP114K,RP114N251B,RP114K231D,RP114Q102D5,RP114N121D5,RP114K081B,RP114Q152D,RP114K231B,RP114Q152B,RP114Q302B,RP114QXX2B,RP114K081D,RP114Q302D,RP114N181B5,RP114N141D,RP114N141B,RP114K111B,RP114K341D,RP114N091B,RP114N091D,RP114N301D5,RP114K191B,RP114Q282B,RP114K341B,RP114K111D,RP114Q282D,RP114Q202B,RP114K191D,RP114Q202D,RP114N241B,RP114K111B5,RP114N241D,RP114K221D,RP114Q162B,RP114K221B,RP114Q162D,RP114N181D5,RP114Q312B,RP114Q312D,RP114N131B,RP114Q282B5,RP114N361D,RP114K101D5,RP114N361B,RP114N131D
R8151x Series AEC-Q100 Grade 2 50 mA 36 V Input LDO Regulator for Automotive Applications
型号- R8151H059B,R8151X039B,R8151S091B,R8151X027B,R8151S048B,R8151X111B,R8151S036B,R8151S024B,R8151H091B,R8151X082B,R8151X094B,R8151H120B,R8151X070B,R8151H035B,R8151H047B,R8151H023B,R8151HXXXB-T1-FE,R8151X028B,R8151S092B,R8151S080B,R8151X112B,R8151H090B,R8151S049B,R8151S037B,R8151X100B,R8151S025B,R8151X095B,R8151S110B,R8151X071B,R8151X083B,R8151H046B,R8151H058B,R8151H022B,R8151H034B,R8151X SERIES,R8151S093B,R8151X029B,R8151S081B,R8151X114B,R8151X101B,R8151X113B,R8151S038B,R8151S026B,R8151S111B,R8151X084B,R8151X096B,R8151X060B,R8151X072B,R8151H021B,R8151H057B,R8151H069B,R8151H033B,R8151H045B,R8151H109B,R8151S094B,R8151S082B,R8151S070B,R8151X103B,R8151X115B,R8151S039B,R8151X102B,R8151S027B,R8151X097B,R8151S112B,R8151S100B,R8151X073B,R8151X085B,R8151H020B,R8151X061B,R8151H032B,R8151H068B,R8151H044B,R8151H056B,R8151H108B,R8151S031B,R8151X059B,R8151X046B,R8151X058B,R8151X022B,R8151X034B,R8151S068B,R8151S056B,R8151S044B,R8151S032B,R8151H031B,R8151H043B,R8151H079B,R8151S109B,R8151X090B,R8151H055B,R8151H067B,R8151H107B,R8151H119B,R8151S020B,R8151X048B,R8151X035B,R8151X047B,R8151X023B,R8151S069B,R8151S057B,R8151X120B,R8151S045B,R8151S033B,R8151S021B,R8151H042B,R8151H054B,R8151X091B,R8151H030B,R8151H066B,R8151H078B,R8151H106B,R8151H118B,R8151X037B,R8151X049B,R8151X024B,R8151X036B,R8151S058B,R8151S046B,R8151S034B,R8151S022B,R8151H053B,R8151H065B,R8151X080B,R8151X092B,R8151H041B,R8151H077B,R8151H089B,R8151H105B,R8151H117B,R8151X026B,R8151X038B,R8151S090B,R8151X025B,R8151X110B,R8151S059B,R8151S047B,R8151S035B,R8151S023B,R8151S120B,R8151X093B,R8151H064B,R8151H076B,R8151H040B,R8151X081B,R8151H052B,R8151H088B,R8151H116B,R8151H104B,R8151S075B,R8151S063B,R8151S051B,R8151X108B,R8151S105B,R8151X066B,R8151X078B,R8151X042B,R8151X054B,R8151S088B,R8151X030B,R8151S076B,R8151H075B,R8151H087B,R8151H051B,R8151H063B,R8151H099B,R8151S117B,R8151H103B,R8151H115B,R8151X109B,R8151S064B,R8151S052B,R8151S040B,R8151X079B,R8151X055B,R8151X067B,R8151X031B,R8151X043B,R8151H050B,R8151S089B,R8151S077B,R8151S065B,R8151H086B,R8151H098B,R8151H062B,R8151H074B,R8151S118B,R8151S106B,R8151H029B,R8151SXXXB-E2-FE,R8151H114B,R8151XXXXB,R8151S053B,R8151S041B,R8151X068B,R8151X044B,R8151X056B,R8151X020B,R8151X032B,R8151H061B,R8151S078B,R8151S066B,R8151S054B,R8151H097B,R8151H073B,R8151H085B,R8151H102B,R8151S119B,R8151S107B,R8151H028B,R8151S042B,R8151S030B,R8151X057B,R8151X069B,R8151X033B,R8151X045B,R8151H060B,R8151S079B,R8151X021B,R8151H072B,R8151S067B,R8151S055B,R8151S043B,R8151H084B,R8151H096B,R8151H101B,R8151H113B,R8151S108B,R8151H039B,R8151H027B,R8151S095B,R8151S083B,R8151X116B,R8151S071B,R8151X104B,R8151S028B,R8151S113B,R8151X086B,R8151H071B,R8151S101B,R8151X098B,R8151H083B,R8151X062B,R8151X074B,R8151X050B,R8151H095B,R8151H112B,R8151H100B,R8151H026B,R8151H038B,R8151X,R8151S096B,R8151S084B,R8151S072B,R8151X105B,R8151S060B,R8151X117B,R8151X099B,R8151S114B,R8151S102B,R8151X075B,R8151H082B,R8151X087B,R8151H094B,R8151X051B,R8151X063B,R8151H070B,R8151H111B,R8151S029B,R8151H037B,R8151H049B,R8151S097B,R8151S085B,R8151X118B,R8151S073B,R8151S061B,R8151X106B,R8151S115B,R8151X088B,R8151S103B,R8151X064B,R8151H093B,R8151X076B,R8151X040B,R8151X052B,R8151H081B,R8151S098B,R8151H025B,R8151H110B,R8151H048B,R8151S086B,R8151S074B,R8151X107B,R8151S062B,R8151X119B,R8151S050B,R8151S116B,R8151S104B,R8151X077B,R8151X089B,R8151X053B,R8151X065B,R8151H080B,R8151S099B,R8151X041B,R8151H092B,R8151S087B,R8151H024B,R8151H036B
【IC】NR1620系列产品上市，面向消费类设备和工业设备、输出电流为150mA的LDO稳压器
“NR1620系列”产品是实现了静态电流为0.4μA和超低功耗的LDO稳压器。本产品非常适合用于智能手表、智能手环、健康管理器材等可穿戴设备，以及使用锂离子电池或纽扣电池的设备等需要低功耗、长时间运作的系统电源。
产品 发布时间 : 2024-04-03
电子商城
现货市场
服务
可定制变压器电压最高4.5KV，高频30MHz；支持平面变压器、平板变压器、OBC变压器、DCDC变压器、PLC信号变压器、3D电源、电流变压器、反激变压器、直流直流变压器、车载充电器变压器、门极驱动变压器等产品定制。
最小起订量： 100000 提交需求>
可定制平板变压器、主变压器的开关频率2MHz以内、输入电压1400V以内、输出电压1400V以内，50%以上的产品采用自动化生产，最快3天提供样品、7天交货。
最小起订量： 3000 提交需求>
授权代理品牌：集成电路
授权代理品牌：分立元件
授权代理品牌：接插件及结构件
授权代理品牌：部件、组件及配件
授权代理品牌：电源及模块
授权代理品牌：电子材料
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