【经验】解析线性稳压器的稳定性优化简易方法

时间： 2022-07-17 来源：ROHM

技术问答

选型帮助

研发客服

商务客服

在大容量多层陶瓷电容器（以下简称“MLCC”）并不常见的时代开发出来的线性稳压器，当在线性稳压器输出端连接MLCC等低ESR的电容器时，可能会在线性稳压器反馈环路中发生相位延迟并引起振荡。在这种情况下，可以在线性稳压器中通过与输出电容器串联插入电阻器并增加ESR使相位超前来避免振荡。

确定要串联插入的电阻值时，正确方法是使用频率特性分析仪（FRA）来确认相应电路中的线性稳压器的实际相位裕度。但是，如果无法使用FRA，或者即使可以使用FRA却由于输出电压固定型线性稳压器的反馈环路位于IC内部而无法访问，那么就无法通过FRA来测量相位裕度。ROHM解决方案之一是使用阶跃响应法简单确认线性稳压器的稳定性并对其进行优化。

阶跃响应法

阶跃响应法是通过使输出负载（输出电流）急剧变化（阶跃），用示波器一边确认此时的输出电压波动（即负载瞬态响应特性），一边调整为理想响应特性的方法。尽管使用这种方法无法测量精确的相位和增益，但即或使用FRA，最终也必须观察并确认实际的阶跃响应情况。从这个意义上讲，虽然涉及到实验基础，但是通过阶跃响应来确认稳定性的方法并不是没有根据的。

下面是测试阶跃响应的电路示例。设置是比较容易的。将电子负载设备连接到线性稳压器的输出端并使负载电流急剧变化，通过示波器监测输出电压和负载电流。

如果没有电子负载设备，也可以使用有晶体管开关的电路进行测试。将函数信号发生器连接到N-ch MOSFET的栅极，并使晶体管快速ON/OFF。当晶体管OFF时，电流为0A。当晶体管ON时，流过VO÷RL的电流。

图 1

使负载电流以1A/µs的转换速率从比如0A急剧变化到线性稳压器的最大输出电流。受这种又大又急剧的电流阶跃影响，输出电压基本上会发生波动，并在一段时间后稳定下来。通过调整相应的器件常数（在该示例的情况下，是电路图中的RESR），来逐步优化输出电压的波动幅度和达到稳定所需的时间。

关键要点

●对于线性稳压器而言，当使用MLCC等低ESR的电容器作为输出电容器时，某些线性稳压器可能会发生振荡。

●对于线性稳压器而言，在这种情况下，可以通过与输出电容器串联插入电阻器并增加ESR使相位超前来避免振荡。

●确定要串联插入的电阻值时，通常采用确认其电路中线性稳压器的相位裕度的方法。

●当无法测量相位裕度时，解决方案之一是使用阶跃响应法简单确认线性稳压器的稳定性。

发送到邮箱 |
+1 赞 0
收藏
评论 0
| 转发至：

本文由三年不鸣转载自ROHM，原文标题为:线性稳压器的稳定性优化简易方法，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。

全部评论（0）

暂无评论

【经验】LDO线性稳压器的并联之使用二极管并联LDO

本文是ROHM“LDO线性稳压器的并联”系列文章中的一篇，讲述如何使用二极管并联LDO。在使用二极管进行LDO并联的方法中，由于输出路径中有二极管，因此输出电压会下降二极管VF的量，因此需要采取在LDO的输出电压设置中添加VF部分等相应的对策。

设计经验发布时间 : 2020-10-23

【经验】LDO线性稳压器的并联之使用镇流电阻并联LDO的方法

本文是ROHM系列文章“LDO线性稳压器的并联”中的一篇，介绍使用镇流电阻并联LDO的方法。使用镇流电阻并联LDO的方法中，输出电流可按计算公式求出的值分配。由于LDO的输出电流会流过镇流电阻，因此在负载点会产生电压降，电阻中会产生功率损耗。

设计经验发布时间 : 2021-02-22

【经验】使用电容器降低噪声之去耦电容的有效使用方法要点2：降低电容的ESL

本文中ROHM将介绍“使用电容器降低噪声之去耦电容的有效使用方法要点2：降低电容的ESL（等效串联电感）”。虽说是“降低ESL”，但由于无法改变单个产品的ESL本身，因此这里是指“即使容值相同，也要使用ESL小的电容”。通过降低ESL，可改善高频特性，并可更有效地降低高频噪声。

设计经验发布时间 : 2020-01-20

型号- BD60FC0W,BD7673AG,BU90006GWZ,BAJ0CC0FP,BH6174GUL,BD81026MUV,BA18JC5T,BD52XXFVE SERIES,BD1CIC0WHFV,BD18KA5W,BM2P016-Z,BD53XXFVE SERIES,BD9106FVM,BD1CIC0W,BD3506F,BU43XXG SERIES,BH25RB1WGUT,BD18HA3WEFJ,BD7602GUL,BU27TA2WHFV,BD82001FVJ-LB,BAJ2CC0WT,BD52EXXG SERIES,BD15GA3W,BD12IC0MEFJ-LB,BD50FA1MG-M,BD9109FVM-LB,BD15HA5WEFJ,BU12SD2MG-M,BD433M2WFP3-C,BD90GC0MEFJ-LB,BA178M08CP,BAJ0BC0WFP,BD50HC5MEFJ-C,BA70BC0FP,BA90BC0T,BA90BC0W,BD00FC0WEFJ,BD70GA5MEFJ-LB,BD50HC5MEFJ-M,BM61M41RFV-C,BD9C301FJ,BU48XXF SERIES,BD15KA5WFP,BDJ2GA5MEFJ-M,BD30GA5MEFJ-M,BD15GC0MEFJ-LB,BA80BC0,BD00GA5MEFJ-LB,BD90C0AFPS,BD820F50EFJ-C,BD46EXX1G-M SERIES,BD80C0AWFP2-C,BD50GA3WNUX,BU26TD2WNVX,BD18HC0MEFJ-M,BD48XXFVE SERIES,BD71815AGW,BD2220G-LB,BU30TA2WNVX,BD71L4LG-1,BD80GA3MEFJ-M,BD30IC0W,BD95821MUV,BM2P139TF,BD81849MUV-C,BD33FC0FP,BA50JC5T,BD70HC0WEFJ,BD00GC0MEFJ-M,BD8158FVM,BD49XXFVE SERIES,BA25BC0WFP,BD3574YFP-M,BD50C0A,BD12IC0WEFJ,BD750L2,BD18HA3MEFJ-LB,BD70HA3WEFJ,BD15IC0W,BD53XXG-2M SERIES,BU32TD3WG,BD87A34FVM,BD30GA3W,BD9111NV,BM2P134Q-Z,BD6046GUL,BD47XXG SERIES,BD433M5WFP2-C,BA30BC0WT,BD50HA3MEFJ-LB,BD10KA5WFP,BA03CC0FP,BD9A100MUV,BD750L2FP3-C,BD3507HFV,BH28NB1WHFV,BH25NB1WHFV,BU27TA2WNVX,BUS1DJC0GWZ,BD433M5FP-C,BD15HC0WEFJ,BD18HC5MEFJ-M,BD33KA5W,BDJ5FC0W,BD25IA5MEFJ-M,BU15JA2VG-C,BD90GA3WEFJ,BD60FC0WEFJ,BAJ0BC0FP,BD2066FJ-LB,BD82001FVJ,BD450M2FP3-C,BD10IA5MEFJ-LB,BH32M0AWHFV,BA17805FP,BD18HC0WEFJ,BD90FC0WEFJ,BD8313HFN,BD9E302EFJ,BD15KA5FP,BD22621G-M,BD82065FVJ-LB,BD80GA3WNUX,BDJ2FC0WFP,BD10KA5WF,BH31NB1WHFV,BD2065AFJ,BD2066FJ,BD2201GUL,BU30TA2WHFV,BD7J200EFJ-LA,BD6529GUL,BD82039FVJ,BD9D322QWZ,BD18IA5MEFJ-M,BM2P151S-Z,BD30FC0WEFJ,BD45EXX1G-M SERIES,BD60HA5MEFJ-LB,BH29M0AWHFV,BD95514MUV,BA70BC0,BM1P061FJ,BD25KA5WF,BD70522GUL,BD9845FV,BU15TD3WG,BU1CJA2DG-C,BU18JA2DG-C,BD800M5WFP2-C,BD9S200MUF-C,BAJ2DD0WHFP,BD2068FJ-M,BM2P0391,BD33HA5MEFJ-LB,BD3573YFP-M,BD99954GW,BD9E151NUX,BU10JA2DG-C,BD9D320EFJ,BD9E303EFJ-LB,BA33BC0WFP,BM2P101E,BD25HA3MEFJ-M,BD52XXG-2M SERIES,BM1Q002FJ,BD37210AMUV,BD4271HFP-C,BD9327EFJ-LB,BD00HA5MEFJ-M,BA50DD0WT,BD90640EFJ-C,BD60GA3WEFJ,BU90090GWZ,BD30GA3MEFJ-LB,BD9701FP,BAJ5CC0T,BM1R00146F,BM1050AF,BD50HC5MEFJ-LB,BD15HC5MEFJ-M,BD25GA5MEFJ-LB,BD8311NUV,BH28RB1WGUT,BU2ATD2WNVX,BU18SA4WGWL,BM2P135TF,BU32TD2WNVX,BA09CC0FP,BA60JC5T,BD3539FVM,BM1R00147F,BD10IC0WHFV,BU12JA2MNVX-C,BD9B301MUV-LB,BU48XXFVE SERIES,BDJ2FC0WEFJ,BD33GA3W,BH18M0AWHFV,BAJ6DD0T,BD33C0AWFP2-C,BD9161FVM,BU49XXFVE SERIES,BA9741F,BAJ6DD0W,BD18KA5WF,BD9355MWV,BA17810FP,BD90C0AWFP-C,BM2P0361-Z,BDJ0GC0MEFJ-M,BD82040FVJ,BD8664GW,BA90BC0,BD15IC0WEFJ,BD9B100MUV,BM1R00148F,BM1C102F,BH33NB1WHFV,BD52XXG-2C SERIES,BD82029FVJ,BU34DV7NUY,BU1JTD2WNVX,BD42530EFJ-C,BA09CC0,BD9104FVM,BD33C0AW,BD50GC0MEFJ-LB,BD33KA5WF,BD33HC5WEFJ,BH27M0AWHFV,BD2206G-LB,BD12IA5WEFJ,BM1R00149F,BU2JTA2WNVX,BU15JA2MNVX-C,BH33RB1WGUT,BA178M10FP,BU46KXX2G SERIES,BU33DV7NUY,BM2SCQ124T-LBZ,BM1C101F,BD9S000NUX-C,BD90GA3MEFJ-LB,BU15SD2MG-M,BD70FC0W,BD00GA3WEFJ,BD2069FJ-M,BA33JC5T,BD60HA3MEFJ-M,BD8139AEFV,BD750L2FP-C,BD450M5WFP2-C,BD7F100HFN-LB,BD9P233MUF-C,BD9703FP,BD8317GWL,BD9035AEFV-C,BD95602MUV-LB,BM2P051F,BD60GC0MEFJ-LB,BD3508MUV,BD33GC0MEFJ-M,BU10TD2WNVX,BA178M10CP,BD00FC0W,BS2103F,BD18GA5WEFJ,BU15TD2WNVX,BA60BC0FP,BD70GC0WEFJ,BDJ2GC0WEFJ,BD450M5FP-C,BA07CC0WFP,BU30SA4WGWL,BA05CC0WT,BA17810CP,BA9743AFV,BA25JC5T,BD9C401EFJ,BU10JA2VG-C,BU25TA2WNVX,BA33DD0WT,BD18IA5MEFJ-LB,BH6062GW,BD30IC0MEFJ-LB,BD22641G-M,BD9B600MUV,BM2P052F,BD60GA3MEFJ-LB,BD18GC0MEFJ-LB,BU1CTD3WG,BD3021HFP,BM2P159PF,BD9611MUV,BD50HC5WEFJ,BD37A41FVM,BD82030FVJ,BD87A29FVM,BU2JTD3WG,BD15IC0MEFJ-LB,BA17812FP,BD33C0AFP2-C,BA90DD0WHFP,BD8166EFV,BM2P053F,BD33GC0MEFJ-LB,BD9874CP-V5,BD81842MUV-M,BS2101F,BU90008GWZ,BD49EXXG SERIES,BU21TD2WNVX,BD45EXX5G-M SERIES,BD25IC0W,BDJ2FC0W,BD00C0AWFP2-C,BA80BC0FP,BA3259HFP,BM2P101X-Z,BA08CC0WFP,BM1P065FJ,BD00FA1WEFJ,BA30DD0WHFP,BD46EXX5G-M SERIES,BM2P054F,BDJ0GA3WNUX,BD7691FJ,BD82004FVJ-M,BD9703CP-V5,BD50FC0FP,BD95500MUV,BA00DD0WCP-V5,BA178M12FP,BD15HA5MEFJ-LB,BA17812CP,BD30HA5MEFJ-LB,BD50FC0W,BD60FC0WFP,BD26IC0WHFV,BA00CC0WCP-V5,BD25GA3W,BD90GA5WEFJ,BA50BC0WFP,BD33GA3MEFJ-LB,BH6178GUL,BD18HA5WEFJ,BU1JTD3WG,BD9060F-C,BA15DD0WT,BD82042FVJ,BM1Q104FJ,BD7F100EFJ-LB,BA33BC0,BA09CC0WFP,BD25IC0WEFJ,BD2051AFJ,BD9152MUV,BA17809CP,BD30GC0MEFJ-M,BU25TA2WHFV,BD6042GUL,BD90GA3W,BD33IC0MEFJ-M,BD35395FJ-M,BD80C0A,BD00FC0WFP,BA178M12CP,BM2P26CK,BD9701CP-V5,BD50C0AWHFP-C,BD70GA3WEFJ,BD8967FVM,BD46XX2G SERIES,BD6047AGUL,BD80FC0WEFJ,BD2266G-M,BU31TD2WNVX,BM2P181X-Z,BD00IA5MEFJ-LB,BM6101FV-C,BD80C0AFP-C,BM81110MUW,BD33IC0MEFJ-C,BD82020FVJ,BD7690FJ,BD50C0AHFP-C,BDJ0GA3MEFJ-M,BD7684FJ-LB,BD9S100NUX-C,BAJ0BC0,BA70BC0WT,BD8668GW,BU18SD2MG-M,BA08CC0FP,BD50C0AFP-C,BU25TD3WG,BA06CC0,BD70GA3MEFJ-LB,BD99950MUV,BM2P0151-Z,BD00GA5MEFJ-M,BD48EXXG SERIES,BM61S41RFV-C,BD90GA3MEFJ-M,BU30SA5WGWZ,BD9E100FJ-LB,BD33HA3MEFJ-LB,BU32TA2WHFV,BH30NB1WHFV,BD95601MUV-LB,BD87A28FVM,BD50GC0MEFJ-M,BH26M0AWHFV,BD50FC0WEFJ,BU2FSA4WGWL,BM1P067FJ,BD81010MUV,BD71L3SHFV,BD15HC5WEFJ,BD15HA3MEFJ-M,BD90302NUF-C,BU6652NUX,BD6528HFV,BD82032FVJ,BD00HC0MEF

快速参考指南 - ROHM - 2020/12/01 PDF 中文下载

【选型】ROHM（罗姆）通用IC选型指南（中文）

目录- 串行 EEPROM 运算放大器&比较器电压检测器线性稳压器开关稳压器电源管理开关智能功率器件 AD/DA转换器电压参考IC 车载用标准逻辑IC/晶体管阵列/计时器IC 封装一览

型号- BM2LB300FJ-C,BD9B304,BD9B305,BD63536,BR25HXXX-2AC,BD9B300,BD9B301,BR25H16NUX-5AC,BU46LXX2G,BR24H256FVT-5AC,BR24H08F-5AC,BR25H1MFJ-5AC,BR25H512FJ-5AC,BR24G32NUX-3,BU5265SHFV,BD50FA1MG-M,BR24G32NUX-5,BV1LC150,BR25G256FJ-3,BD48EXXG-M,BR25H256F-5AC,BR24H64FVM-5AC,BR25H020FVM-2C,BD9V101,BD9C301FJ,BD9V100,BU34DV7,BDXXGA5MEFJ-M,BR25G128FVT-3,BR25A512F-3M,BD9P135MUF-C,BU46LXX4G,BD46EXX1G-M,BV1LB028,BD226XXG-M,BD46XX1G,BU7250G,BD71L4LG-1,BR24G64FVM-5,BR24G64FVM-3,BA4580R,BR24H08FVT-5AC,BD8158FVM,BU7251SG,BD9C401,BV1LB045,BR93G46F-3A,BR93G46F-3B,BD50C0A,BD750L2,BU7251G,BR93H56RF-2C,BR25H32FVT-5AC,BD87A34FVM,BR24H04FVM-5AC,BD52XXG-2C,BU7291G,BAXXBC0(W),BD9A100MUV,BD9B500,BR24HXXX-5AC,BR93G46FVM-3,BU48XXG,BR25A256FVT-3M,BUS1DJC0GWZ,BA2902YXXX-M,BR93AXX-WM,BR24A08FJ-WM,BD49EXXG,BD95602MUV,BR25G320FVM-3,LMR1801HFV-LB,BR24G32FVM-5,BV1HB045EFJ-C,BR93G66FVT-3A,BR93G66FVT-3B,BR24G1MF-3A,BAXXCC0(W),BU9829GUL-W,BD9A400,BA4584YFV-M,BD9E302EFJ,BR24G02F-3A,BD22621G-M,BD46XX2G,BR24G32FVM-3,BR25H02FJ-5AC,BU5265HFV,BR24G01FVT-3,BD2201GUL,BR25A1MF-3M,BR24H2MFJ-5AC,BD6529GUL,BR93A66RF-WM,BD750L5FP-C,BD82039FVJ,BD9D322QWZ,BR93HXX-WC,BR25H2MF-5AC,BD46XX5G,BD70522GUL,BD9S200MUF-C,BR93G56NUX-3,BD9E151NUX,BR24G128F-3,LMR982FVM,BD52XXG,BD9D320EFJ,BD9E303EFJ-LB,BH2226FV,BA4560R,BV1LB300FJ-C,BUXXSD2MG-M,BR24G128F-5,BA2902YXXX-C,BA4560YXXX-M,BV1LB085,BD4271HFP-C,BD9C601,BA4584R,BD45XX1G,BU7294S,BR24G08FVT-3,BD90640EFJ-C,BD52XXG-2M,BDXXIC0MEFJ-M,BR24G02FJ-3A,BU7271G,BU2506FV,BD9D323,BD1HD500HFN-C,BR93H66RFVT-2C,BD9D322,BD7LS08G-C,BD9D321,BD9D320,BR24A64F-WM,BR93G46FVM-3B,BR93G46FVM-3A,BR25H1MFVT-5AC,BD9F500,BV1LC300,BD8311NUV,BU7233SF,BHXXSA3,BR25H640FVM-2AC,BR24A02FJ-WM,BR93G46NUX-3A,BU9897GUL-W,LMR931G,BR25G320F-3,BR93G46NUX-3B,BM2LB110,BV1LC085EFJ-C,BR24G01F-3A,BD9B301MUV-LB,BAXXBC0,BD7562,BR24G01FVM-3A,BA9741F,BR93A56RFVT-WM,BD45EXX2G-M,BR24G08FJ-3,BD82040FVJ,BR24G64NUX-5,BR24G64NUX-3,BD9B100MUV,BR24H128F-5AC,BR93G56FVT-3,BU7244YFV-C,BR93G76FJ-3,BU34DV7NUX,BR24TXX-3AM,BU7464SF,BA1117,BD33C0AW,BU7232YFVM-C,BUXXJA2,BR93G46F-3,BR24G16NUX-3,BV2HC045EFU-C,BD2222G*,BU7275SHFV,BU33DV7NUX,BR25G320NUX-3,BD90302,BA9743A,BD9S000NUX-C,BR24G16FVT-3,BD7542,BR24G16FJ-3,BD4271,BR93A86RFVM-WM,TLR344,BD4269,BR24H128FVM-5AC,BD9P233MUF-C,BR25H160FVM-2C,BU1S12S1BG-LB,BD49LXXG,TLR342,BD8317GWL,BD9035AEFV-C,LMR821G,BD95602MUV-LB,BD9P255EFV-C,BU46KXX2G,BD9B100,BR25H020FJ-2C,BR25H02FVT-5AC,BR24G512FJ-3A,LM2904,BD1HC500FVM-C,BV1LB010,LM2901,LM2902,BA4584FV,LM2903,BR24H16F-5AC,BU7231SG,BA9743AFV,BD9C401EFJ,BR93G66FVT-3,BR25H010FVT-2C,BU9889GUL-W,BD22641G-M,BD9B600MUV,BU7205SHFV,BD2242G*,BR24G128NUX-5,BR24G512FVT-3A,BD3021HFP,BR24G128NUX-3,BD9611MUV,BU7205HFV,BD37A41FVM,BD87A29FVM,BD9B333,BD3570Y,BR25H256NUX-5AC,BV1LC105,BA178MXX,BM2LB300,BR24G04FVT-3A,BD9D300,BU46KXX4G,BV1LB010FPJ-C,BD9555FVM-C,BR24G512FJ-5A,BRCG016GWZ-3,BR93A56RFJ-WM,BD1LB500,BR24G08NUX-3,BR93H76RFVT-2C,BUXXSD5W,TLR341G,BRCB008GWZ-3,BR24G512FVT-5A,BD48LXXG,BU7253SF,BR24T512F-3AM,BR25H320FVM-2C,BR93H76RFJ-2C,LMR822,BR24G1MFJ-3A,BR25H128FJ-5AC,BR24H02FVT-5AC,BR24G01NUX-3A,LMR824,BR25G640FVT-3,BD12730G,BD82042FVJ,BR93G76FVM-3A,BD9152MUV,BR93G76FVM-3B,BA14741,BD80C0A,BR25G128FVM-3,BU7421SG,BR25H128F-5AC,BA2901YXXX-C,BD2266G-M,BD9S400,BD9P135,BR24G01NUX-3,BR25H16FJ-5AC,BDXXKA5(W),BD7541SG,BV1HB045,BD9S100NUX-C,BR24H512FJ-5AC,BR25G512F-3,BR93A76RFVM-WM,BDXXIA5,BM2LB110FJ-C,BR25H64FVT-5AC,BR24G1MFJ-5A,BR24G04FVM-3A,BR25H080FVM-2C,BR24G08FVM-3,BD12734,BU45KXX4G,BD12732,BD9E100FJ-LB,BDXXHA3MEFJ-M,BD1HC500HFN-C,BR25H640FJ-2AC,BD87A28FVM,BV1LC150EFJ-C,BA3474RFV,BR24H32FJ-5AC,BR93A46RFJ-WM,BR93H66RF-2C,BD9P155,BR25H08FJ-5AC,BV2HC045EFU－C,BD71L3SHFV,BDXXHA3MEFJ-C,BD90302NUF-C,BU9832GUL-W,BD6528HFV,BR24G04FVM-3,BDXXIC0,BR25H320F-2C,BD9G401EFJ-M,BR93GXX-3,BD00D0A,BA82904YXXX-C,BD9E104FJ,BR93A66RFVT-WM,BD9E151,BD33C0A,BU45KXX2G,BD37A19FVM,BR24G08FVT-3A,BD90C0A,BR93H46RF-2C,BU7475SHFV,BD99011,BD9150,BD9151,BD99010,BR25H32NUX-5AC,LMR341G,BA9744,BA9741,BRF0520A,BU9891GUL-W,BD2233G,BD9A101MUV-LB,BR25G256FVT-3,BR25H080FJ-2C,BDXXGA3,BD90C0AW,BU7442S,BUXXTA2W,BR24G04NUX-3,BR24H04NUX-5AC,BR25A256F-M,BV1LC105FJ-C,BAXXJC5(W),BR93G46FVT-3A,BR93G46FVT-3B,BDXXGA5,BR93G86NUX-3,BD9A302QWZ,BV2HX045EFU-C,BD9A300MUV,BD82044FVJ,BUXXJA2DG-C,BD9G341AEFJ-LB,BD2232G,BDXXLA5MEFJ-M,BR25H08FVM-5AC,BD47XXG,BA2107G,BR25A512FVT-3M,BR25H160FVT-2C,BA2903YXXX-C,BR24H32FVM-5AC,BR25HXXX-2C,BR25H02NUX-5AC,BU7444F,BD99A41F,BR25H1MF-5AC,BM2LC105,BD7LS97G-C,BR25H020F-2C,BD2264G-M,BU7495HFV,BD49KXXG,BR93G66F-3A,BR93G66F-3B,BD8306MUV,BV1LB085FJ-C,BR24G128FVM-5,BR24G128FVM-3,BDXXGC0,BA2901YXXX-M,BAXXCC0,BD9E100,BD9E101,BU33UV7NUX,BD9E104,BD9P105,BR93H56RFVM-2C,BDXXHA5MEFJ-M,BR24G02FVM-3A,BA3474YFV-C,BD7561SG,BR93G66NUX-3,BR25G320FJ-3,BR25H32FJ-5AC,BA4564WFV,BU7421G,BR93G46NUX-3,BA3474F,BA8391G,BR24A16FJ-WM,BU45LXX2G,BD95830MUV,BD45XX2G,BD48EXXG,BR93G66NUX-3A,BR93G56FJ-3,BD9PXX5EFV,BRXXXXXX-5,BD9S012NUX-C,BR25H640F-2AC,BD9S000,BR93G86NUX-3A,LMR321G,BU7244F,BA2904YXXX-C,BR93G66NUX-3B,BR93G86NUX-3B,BR24H16FJ-5AC,BU7244S,BD9P205EFV-C,BU7462S,BU7486S,BH2227FV,

选型指南 - ROHM - Ver.4.0 - 2019年11月 PDF 中文下载

电源电路的七大标配：从低噪声型到升压型全覆盖

现代电子系统通常被CPU、FPGA、模拟IC、RF、天线等数百乃至数千个半导体和电子元器件填得满满的。要发挥出这些电子元器件的性能，离不开能够提供稳定且高质量的电压和电流的“电源电路”。设计电源电路的第一步是正确选择满足目标需求的电路方式。在本文中，我们将探讨从处理器到电机驱动器领域常用的电源电路类型及其机制。

技术探讨发布时间 : 2024-11-15

For Analog Audio Processors, Can I use MLCCs instead of electrolytic capacitors as input terminal coupling capacitors in a product that operates with only one or two positive power supplies?

When using MLCCs, it is necessary to pay attention to DC bias characteristics and temperature characteristics. The capacitance of MLCCs varies greatly with temperature and DC bias. Make sure to select a component with a capacitance value that is higher than the required value at the voltage and temperature conditions in which it will be used.

技术问答发布时间 : 2024-08-30

【选型】ROHM（罗姆）车载用稳压器选型指南（英文）

目录- Company Profile Types and Features of Automotive Power Supply ICs Switching Regulators Linear Regulators Manufacturing Introduction

型号- BDXXIXXMEFJ-M,BD800M5WHFP-C,BD4269EFJ-C,BD9901XEFV-M SERIES,BD99010EFV-M,BD9016KV-M,BD9PXX5EFV-C,BD50C0AWHFP-C,BD90C0A□□□-C,BDXXHXXMEFJ-M SERIES,BD80C0AWFP-C,BD80C0AFP-C,BD33IC0MEFJ-C,BDXXHXXMEFJ-C SERIES,BD9901XEFV-M,BD50C0AWFP2-C,BD50C0AHFP-C,BD50FA1MG-M,BD9S100NUX-C,BD9S201NUX,BD433M2WFP3-C,BD50C0AFP-C,BUXXJA2MNVX-C SERIES,BD9SD11NUX,BD9P205MUF-C,BD9P155EFV-C,BD50C0AFP2-C,BDXXIXXMEFJ-C,BDXXHA3MEFJ-M,BD9SX00NUX-C,BD00JC0MNUX-M,BD90610EFJ-C,BD90C0AW□□□-C,BD750L2EFJ-C,BDXXGA5MEFJ-M,BD820F50EFJ-C,BDXXGXXMEFJ-M SERIES,BD80C0AWFP2-C,BD9S110NUX-C,BD9P135MUF-C,BD906X0HFP-C,BD9S400MUF-C,BD33C0AWFP-C,BD9S201NUX-C,BD90302NUF-C,BDXXHA3MEFJ-C,BD80C0AHFP-C,BD9P255MUF-C,BDXXGA3MEFJ-C,BD00C0AW□□□-C,BD433M5WFP2-C,BD750L5EFJ-C,BDXXGXXMEFJ-C,BD750L2FP3-C,BD733L2FP-C,BD80C0AWHFP-C,BD433M5□□□-C,BD433M5WFPJ-C,BD433M5FP-C,BD80C0AFPS-C,BD906X0EFJ-C,BD90C0AFP2-C,BDXXGA3MEFJ-M,BD42530FPJ-C,BD450M2FP3-C,BD50C0AWFP-C,BD450M2WFP3-C,BD90620EFJ-C,BD9SXXXNUX-C,BDXXIXXMEFJ-C SERIES,BUXXJA2DG-C,BD00GXXMEFJ-C,BD42530FP2-C,BD33C0A□□□-C,BD9015KV-M,BD733L5□□□-C,BDXXGXXMEFJ-M,BD9SX00MUF-C SERIES,BD357XY SERIES,BD750L5FP-C,BD9P235MUF-C,BD9P235EFV-C,BD450MX□□□-C,BD9S200MUF-C,BD800M5WFP2-C,BD906XHFP-C,BD90C0AHFP-C,BD50C0AW□□□-C,BD433M2WEFJ-C,BD90C0AWHFP-C,BD906X0EFJ-C SERIES,BUXXSD2MG-M,BD9PXX5MUF-C SERIES,BD33C0AFP-C,BD4271FP2-C,BD4271HFP-C,BD433M5W□□□-C,BD433M2FP3-C,BD90640EFJ-C,BD750L5□□□-C,BD90C0AWFP2-C,BDXXHA5MEFJ-M,BD450M5□□□-C,BD733L2FP3-C,BDXXIC0MEFJ-M,BD357XY,BD9P1X5EFV-C,BD750LX□□□-C,BD9P1X5MUF-C,BD42530□□□-C,BD733LX□□□-C,BD99011EFV-M,BD9PXX5EFV,BD433M2W□□□-C,BD9S012NUX-C,BD450M5WFPJ-C,BD906X0HFP-C SERIES,BD9P205EFV-C,BD90610HFP-C,BD433M5FP2-C,BD9S111NUX-C,BD9PXX5MUF,BDXXHC0MEFJ-M,BD33C0AWFP2-C,BD9PXX5MUF-C,BD433M2□□□-C,BD9PXX5,BD3650FP-M,BD90C0AWFP-C,BD733L2□□□-C,BD9P155MUF-C,BDXXHXXMEFJ-M,BD9SX00MUF-C,BD4271□□□-C,BD42530EFJ-C,BD9P135EFV-C,BD33C0AWHFP-C,BD9PXX5EFV-C SERIES,BD9S300MUF-C,BD90C0AFP-C,BD433MX□□□-C,BD800M5W□□□-C,BD450M5FP2-C,BD9S000NUX-C,BD42754□□□-C,BD8P250MUF-C,BD750L2FP-C,BD80C0AFP2-C,BD450M5WFP2-C,BD9P233MUF-C,BDXXHC5MEFJ-M,BDXXHXXMEFJ-C,BD9035AEFV-C,BD9P255EFV-C,BD9SX1XNUX-C,BD750L2□□□-C,BD450M5FP-C,BD00C0AWFP-C,BDXXGC0MEFJ-M,BD9PXX5 SERIES,BD450M2W□□□-C,BD42500G-C,BD425X0□□□-C,BD7XXLX□□□-C SERIES,BD425X0□□□-C SERIES,BD90620HFP-C,BD80C0AW□□□-C,BD00C0AWHFP-C,BUXXJA2MNVX-C,BDXXIXXMEFJ-M SERIES,BD33C0AW□□□-C,BD42540FJ-C,BDXXIA5MEFJ-M,BD450M2EFJ-C,BD9P2X5EFV-C,BD33C0AFP2-C,BD33C0AHFP-C,BD9P2X5MUF-C,BD800M5□□□-C,BD50C0A□□□-C,BD4269FJ-C,BD7XXLX□□□-C,BD4269□□□-C,BD00C0AWFPS-M,BD733L2EFJ-C,BD450M2WEFJ-C,BD90640HFP-C,BD42754FP2-C,BD00C0AWFP2-C,BUXXJA2VG-C,BD906XHFP-C SERIES,BD9SXXXNUX-C SERIES,BD733L5FP-C,BD80C0AWEFJ-C,BD9P105EFV-C,BD50HC0MEFJ-C,BD450M5W□□□-C,BDXXGXXMEFJ-C SERIES,BD450M2□□□-C,BD00IA5MHFV-M,BD9P105MUF-C,BD906X0EFJ,BD9V100MUF-C,BD42754FPJ-C,BD80C0A□□□-C,BD433M2EFJ-C

选型指南 - ROHM - Ver.3.2 - 10.2020 PDF 英文下载

Thermal Calculation for Linear Regulator Linear Regulator Series Application Note

型号- JESD51-2A

应用笔记或设计指南 - ROHM - Rev.001 - 2017.2 PDF 英文下载

关于线性稳压器，请告知功耗损失的计算方法。

线性稳压器的功耗损失Pd为，如设成Vin：电源电压、Vo：输出电压、Io：输出电流、Icc：电路（偏置）电流，则 Pd=（Vin-Vo）×Io+Vin×Icc

技术问答发布时间 : 2024-07-30

ROHM线性稳压器选型表

罗姆产品阵容丰富，具备通用3引脚稳压器、低功耗、大电流、耐高压等产品，极大地促进了移动电话、车载设备、家电、消费电子及工业机器的电源电路的发展。

产品型号	品类	Vin (Max.)[V]	Vin (Min.)[V]	Vout (Typ)[V]	Iout (Max.)[A]	Circuit Current [mA]	Temperature (Min.)[°C]	Temperature (Max.)[°C]	Package	Functional Safety	Common Standard
BD00GA3VEFJ-M	线性稳压器	14V	4.5V	1.5 V to 13V	0.3A	0.6mA	-40°C	105℃	HTSOP-J8	FS supportive	AEC-Q100 (Automotive Grade)

选型表 - ROHM 立即选型

【选型】ROHM（罗姆）车载用稳压器选型指南（中文）

目录- 开关稳压器开关稳压器产品阵容初级开关稳压器次级开关稳压器线性稳压器初级线性稳压器次级线性稳压器开关稳压器封装一览线性稳压器封装一览 “噪声特性、耐性”与“热电阻、热特性”名词解释 EMC对策/热对策的支持体制

型号- BD42530□□□-C,BDXXIXXMEFJ-M,BD800M5WHFP-C,BD4269EFJ-C,BD99010EFV-M,BD9016KV-M,BD733LX□□□-C,BD9PXX5EFV-C,BD99011EFV-M,BD50C0AWHFP-C,BD433M2W□□□-C,BD90C0A□□□-C,BD9S012NUX-C,BD450M5WFPJ-C,BD80C0AWFP-C,BD80C0AFP-C,BD33IC0MEFJ-C,BD9901XEFV-M,BD50C0AWFP2-C,BD90610HFP-C,BD9P205EFV-C,BD50C0AHFP-C,BD433M5FP2-C,BD50FA1MG-M,BD9S111NUX-C,BD9S100NUX-C,BD433M2WFP3-C,BDXXHC0MEFJ-M,BD33C0AWFP2-C,BD50C0AFP-C,BD9PXX5MUF-C,BD433M2□□□-C,BD9P205MUF-C,BD9PXX5,BD3650FP-M,BD90C0AWFP-C,BD9P155EFV-C,BD733L2□□□-C,BD9P155MUF-C,BDXXIXXMEFJ-C,BD50C0AFP2-C,BDXXHA3MEFJ-M,BDXXHXXMEFJ-M,BD9SX00NUX-C,BD00JC0MNUX-M,BD90610EFJ-C,BD9SX00MUF-C,BD90C0AW□□□-C,BD4271□□□-C,BD750L2EFJ-C,BDXXGA5MEFJ-M,BD42530EFJ-C,BD820F50EFJ-C,BD80C0AWFP2-C,BD9P135EFV-C,BD9P135MUF-C,BD9S110NUX-C,BD33C0AWHFP-C,BD906X0HFP-C,BD9S300MUF-C,BD9S400MUF-C,BD90C0AFP-C,BD33C0AWFP-C,BD9S201NUX-C,BD90302NUF-C,BDXXHA3MEFJ-C,BD433MX□□□-C,BD80C0AHFP-C,BD450M5FP2-C,BD9S000NUX-C,BD42754□□□-C,BD8P250MUF-C,BD750L2FP-C,BD80C0AFP2-C,BD450M5WFP2-C,BD9P233MUF-C,BDXXHC5MEFJ-M,BD9P255MUF-C,BDXXHXXMEFJ-C,BD9035AEFV-C,BD9P255EFV-C,BD00GXXMEFJ-M,BDXXGA3MEFJ-C,BD00C0AW□□□-C,BD433M5WFP2-C,BD9SX1XNUX-C,BDXXGXXMEFJ-C,BD750L2FP3-C,BD750L2□□□-C,BD733L2FP-C,BD450M5FP-C,BD80C0AWHFP-C,BD433M5□□□-C,BDXXGXXMEFJ-M,BD433M5WFPJ-C,BD00C0AWFP-C,BDXXGC0MEFJ-M,BD433M5FP-C,BD80C0AFPS-C,BD450M2W□□□-C,BD42500G-C,BD906X0EFJ-C,BD00GXXMEFJ-M,BD425X0□□□-C,BD9016KV,BDXXGA3MEFJ-M,BD90C0AFP2-C,BD42530FPJ-C,BD90620HFP-C,BD80C0AW□□□-C,BD450M2FP3-C,BD00C0AWHFP-C,BD50C0AWFP-C,BD450M2WFP3-C,BUXXJA2MNVX-C,BD90620EFJ-C,BD9SXXXNUX-C,BD33C0AW□□□-C,BD42540FJ-C,BDXXIA5MEFJ-M,BUXXJA2DG-C,BD450M2EFJ-C,BD42530FP2-C,BD9P2X5EFV-C,BD33C0AFP2-C,BD33C0A□□□-C,BD33C0AHFP-C,BD9P2X5MUF-C,BD800M5□□□-C,BD9015KV-M,BD733L5□□□-C,BDXXGXXMEFJ-M,BD50C0A□□□-C,BD4269FJ-C,BD750L5FP-C,BD7XXLX□□□-C,BD9P235MUF-C,BD00C0AWFPS-M,BD733L2EFJ-C,BD9P235EFV-C,BD450M2WEFJ-C,BD90640HFP-C,BD42754FP2-C,BD00C0AWFP2-C,BUXXJA2VG-C,BD450MX□□□-C,BD9S200MUF-C,BD800M5WFP2-C,BD90C0AHFP-C,BD50C0AW□□□-C,BD433M2WEFJ-C,BD9015KV,BD733L5FP-C,BD80C0AWEFJ-C,BD90C0AWHFP-C,BD9P105EFV-C,BUXXSD2MG-M,BD33C0AFP-C,BD4271FP2-C,BD50HC0MEFJ-C,BD4271HFP-C,BDXXIC0MEFJ-C,BD433M5W□□□-C,BD433M2FP3-C,BD450M5W□□□-C,BD90640EFJ-C,BD450M2□□□-C,BD00IA5MHFV-M,BD9P105MUF-C,BD750L5□□□-C,BDXXHA5MEFJ-M,BD90C0AWFP2-C,BD9V100MUF-C,BD450M5□□□-C,BDXXIC0MEFJ-M,BD733L2FP3-C,BD357XY,BD9P1X5EFV-C,BD42754FPJ-C,BD750LX□□□-C,BD9P1X5MUF-C,BD80C0A□□□-C,BD433M2EFJ-C

选型指南 - ROHM - Ver.3.1 - 06.2020 PDF 中文下载