【经验】解析内置线性稳压器的电源无法启动的故障之正电源或负电源不启动

时间： 2022-11-25 来源：ROHM官网

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本文主要介绍内置线性稳压器的电源无法启动的故障，通过学习本文你将明白通过正线性稳压器和负线性稳压器提供的正负电源，如果正负电源启动速度不同，启动较慢的电源会产生反向电压，从而引发启动故障。同时还会了解到解决启动较慢的电源会产生反向电压故障的对策包括切断各输出间的连接路径、添加二极管以降低反向电压、在过电流保护电路中使用具有电流下垂特性的线性稳压器IC等，但无论哪种对策，都需要在实际设备上进行装机验证。

在图1所示的正负电源中，正电源和负电源启动速度不同是很常见的现象。在这种情况下，如果在正负之间有类似RL3的负载，或由多个电路形成的意外电流路径，则先启动的电源将通过RL3从另一个电源的输出汲取电流（虚线路径)，正电压稳压器的输出被施加反向电压，从而会发生与“恒流负载导致的启动故障”类似的启动故障。

图1. 在正负电源电路中负电源先启动时的电流路径

当发生因此类原因导致的启动问题时，可以尝试以下对策：

•切断RL3的路线。

•在输出和地之间连接VF值低的肖特基势垒二极管（图2中的D1、D2），以降低反向电压值并防止输出电压不上升。　※在这个对策中，需要选择启动时从IC供给的电流值大于反向电流值的产品，但由于产品波动，无法100%保证正常启动。

•过电流保护电路中使用具有下垂特性的线性稳压器IC。

※在这种情况下，如果电流流过在IC的输出引脚和接地之间的ESD保护二极管或寄生二极管，可能会造成IC劣化甚至损坏，为了防止这种问题发生，需要在IC的输出引脚和接地之间连接肖特基势垒二极管。（图2中的D1、D2）。

图2. 正负电源电路的启动故障对策示例

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本文由三年不鸣转载自ROHM官网，原文标题为:内置线性稳压器的电源无法启动的故障案例5 : 正电源或负电源不启动，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。

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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,

2019年11月 - ROHM - 选型指南 - Ver.4.0 代理服务技术支持采购服务

关于线性稳压器，请告知过流保护(OCP)的动作。

超过建议输出电流时，通过为各产品设置的过电流检测值进行电流限制。在过流保护启动后，电流折返电路也会启动，在降低输出电压的同时限制输出电流，从而保护IC以免破坏。大多数线性稳压器，过电流消失后，输出电压会自动恢复，但也有锁存的类型，因此请确认Datasheet。

2024-07-30 - 技术问答代理服务技术支持采购服务

线性稳压器热计算线性稳压器系列应用说明

描述- 本文详细介绍了线性稳压器热计算的方法和注意事项。内容涵盖IC芯片结温的估算方法、热阻和热特性参数的定义、环境温度和封装表面中心温度的测量方法。通过计算IC功耗、封装热阻、环境温度和封装表面中心温度，可以估算出IC芯片的结温，确保温度低于绝对最大额定值。文章还提供了计算示例，并讨论了提高热辐射效率的方法。

型号- JESD51-2A

2017.2 - ROHM - 应用笔记或设计指南 - Rev.001 代理服务技术支持采购服务

【选型】ROHM（罗姆）线性稳压器选型指南（中文）

目录- 超小型CMOS LDO稳压器高耐压LDO稳压器次级LDO稳压器高音质音响用电源单通道输出线性稳压器多路输出LDO DDR SDRAM用终端稳压器 LDO+(加) 封装一览表

型号- BUXXTD3W,BDXXIA5M-M,BD4269EFJ-C,BDXXHC5W,BD35395FJ-M,BUXXPB1WHFV,BUXXTA2WHFV,BAXXDD0WT,BD3650-M,BDXXHC5M-M,BD3506F,BD4XXM2-C,BD7602GUL,BDXXGA3W,BAXXBC0W,BAXXBC0T,BDXXIA5M-LB,BAXXCC0FP,BHXXPB1W,BUXXJA2D -C,BDXXIA5,BD4XXM5FP2-C,BA78XX,BAXXCC0WFP,BD3550HFN,BDXXIC0W,BD7XXL5-C,BDXXHXXWEFJ,BDXXHA3MEFJ-M,BD357XYFP-M,BDXXHA3W,BUXXJA2M-C,BDXXGA5MEFJ-M,BHXXSA3W,BDXXC0AFPS,BU6652NUX,BDXXIC0,BDXXHC0M-M,BA1117FP,BD4XXM5WFP2-C,BDXXGA5W,BDXXHC0M-C,BDXXHA3M-M,BDXXHA5,BDXXHA3,BD357XY-M,BUXXSA5WGWZ,BDXXHA3MEFJ-LB,BD00D0AWHFP,BHXXNB1,BD7XXL5FP-C,BD4XXM2EFJ-C,BA78XXFP,BAXXCC0T,BU6653NUX,BUXXSA4W,BDXXHA5M-LB,BAXXCC0W,BD357XYHFP-M,BDXXIC0WEFJ,BD4XXM2WFP3-C,BDXXFC0WEFJ,BD3507HFV,BUXXSD2M -M,BD42754,BUXXTA2WNVX,BDXXHC0W,BD80C0AFPS-C,BA78MXXCP,BA33D15HFP,BD3541NUV,BD35XXX,BDXXGC0MEFJ-LB,BDXXKA5WFP,BDXXGA3MEFJ-M,BD800M5WFP-C,BDXXGA3,BA178MXXFP,BUXXTA2W,BD7004NUX,BDXXHC0,BAXXDD0W,BUXXSA5W,BD8XXM5W-C,BDXXHC0MEFJ-LB,78MXX,BDXXGA5,BDXXHC5,BUXXJA2DG-C,BAXXBC0WCP-V5,BAXXBC0FP,BD7XXL5,BD7XXL2,BA00CC0WT-V5,BD3512MUV,BUXXTA2,BAXXDD0,BDXXFA1M-M,BUXXRB1WGUT,BD4271 -C,BDXXHA3WEFJ,BD4XXM2W-C,BDXXC0AW-C,BAXXBC0WT-V5,BU6654NUX,BDXXHC0WEFJ,BAXXCC0WT,BDXXC0AHFP-C,BD00FA1W,BDXXGA5M-LB,BDXXKA5W,BDXXFA1,BDXXGC0,BUXXSD2MG-M,BDXXFA1FP3,BDXXHC5WEFJ,BAXXCC0,BD4271FP2-C,BD4271HFP-C,BU33UV7NUX,BDXXIC0MEFJ-C,BDXXGC0WEFJ,BD4XXM5FP-C,BDXXHA5MEFJ-M,BDXXIC0MEFJ-M,BD357XY,BD37201NUX,BDXXGA3WEFJ,BDXXGA5M-M,BDXXIC0M-C,BDXXGA5MEFJ-LB,BA178MXXCP,BDXXFD0,BDXXGA3WNUX,BUXXSA4,BD3539NUX,BD8XXM5,BUXXSA5,BD3533F,BD4271HFP,BDXXIA5WEFJ,BHXXSA3,BDXXIC0M-M,BDXXGA3MEFJ-LB,BDXXC0AFP2-C,BAXXBC0WFP,BD3539FVM,BUXXSA3WGUT,BDXXC0AWFP,BDXXIA5W,BDXXC0A-C,BAXXJC5,BDXXFC0,BDXXHC0MEFJ-C,BAXXBC0,BA178XXCP,BDXXHC0MEFJ-M,BDXXHA5M-M,BDXXIXX,BDXXIC0MEFJ-LB,BUXXJAMNVX,BD3650FP-M,BDXXGC0M-M,BDXXKA5FP,BD7003NUX,BD4269FJ -C,BD3020HFP,BD4XXM5-C,BAXXBC0WT,BA1117,BUXXJA2,BDXXIA5MEFJ-LB,BDXXIC0WHFV,BD9B300MUV,BDXXFA1MG-M,BA178XX,BD4XXM2FP3-C,BD4269EFJ -C,BDXXD0A,BA78XXCP,BDXXFD0WHFP,BHXXRB1W,BUXXTD3,BD3552HFN,BDXXC0AFP-C,BD4271,BDXXHC5MEFJ-LB,BHXXRB1,BDXXHXX,BUXXNB1WHFV,BDXXGC0W,BUXXJA2V -C,BUXXTD2,BD4269,BDXXHC5MEFJ-M,BA178XXFP,BDXXC0AWFP-C,BD4269EFJ,BD3540NUV,BA78MXXFP,BD7XXL2FP3-C,BU6655NUX,BD7XXL2-C,BDXXFC0WFP,BD3508MUV,BDXXFC0FP,BD00D0AW,BD35390FJ,D4XXM5WFPJ-C,BD7XXL2EFJ-C,BDXXHA5W,BDXXFD0W,BDXXGC0MEFJ-M,BHXXNB1W,BD3551HFN,BDXXIC0M-LB,BAXXDD0WHFP,BD9B600MUV,BD3521FVM,BU6650NUX,BDXXC0A,BD3533HFN,BD3021HFP,BUXXJA2MNVX-C,BDXXKA5,BUXXSD5,BD7XXL2FP-C,BDXXC0AW,BDXXGXX,BDXXIA5MEFJ-M,BAXXJC5T,BD4XXM5W-C,BDXXHC5M-LB,BDXXHA5WEFJ,BUXXSD2,78XX,BA33D18HFP,BA178MXX,BA30E00WHFP,BD4XXM2WEFJ-C,BAXXJC5W,BDXXGA3M-M,BDXXFD0WFP2,BD4XXM5,BU6651NUX,BD4269FJ-C,BA78MXX,BA00JC5WT,BD4269FJ,BD4XXM2,BDXXFC0W,BUXXTD2WNVX,BD3533FVM,BD42754FP2-C,BUXXJA2VG-C,BD3504FVM,BUXXSA4WGWL,BDXXGC0M-LB,BD00FA1WEFJ,BDXXGA5WEFJ,BDXXGA3M-LB,BUXXJA2MNVX,BUXXSD5W,BD3509MUV,DXXIC0MEFJ-C,BA00DD0WCP-V5,BDXXIA5MHFV-M,BUXXSD5WG,BA00CC0WCP-V5,BD42754 -C,BUXXTD2W,BHXXPB1,BD00IA5MHFV-M,BD3650,BDXXHA3M-LB,BUXXTD3WG,BDXXHA5MEFJ-LB,BD42754FPJ-C,BDXXHC0M-LB

2019年7月 - ROHM - 选型指南 - Ver.5.0 代理服务技术支持采购服务

关于线性稳压器，如果输入电压下降到接近输出电压，输出也会下降，但是否会出现IC的劣化和损坏等问题？

如果电气特性的输入输出电压差低于最小值，则线性稳压器的性能无法得到保证，但不会出现劣化或损坏问题。

2024-07-30 - 技术问答代理服务技术支持采购服务

【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

06.2020 - ROHM - 选型指南 - Ver.3.1 代理服务技术支持采购服务

【产品】线性稳压器BD7602GUL，集成NFC IC所需电源、小尺寸封装

BD7602GUL是全球知名的半导体厂商罗姆(ROHM)株式会社推出的用于向移动设备的近距离无线通信LSI（NFC）提供电源的电源管理IC。该款产品每路LDO输出可以通过支持I2C总线协议的2线制串行接口进行控制，将NFC IC所需的电源整合在1片芯片中，可以节省空间，非常适合用于智能手机、移动电话、以及带NFC IC的移动设备等场合。

2018-12-15 - 新产品代理服务技术支持采购服务

关于线性稳压器，请告知IC本身消耗的电流的Datasheet上的项目名称。

IC本身所消耗的电流称为偏置电流，在某些产品中又称为电路电流。

2024-07-30 - 技术问答代理服务技术支持采购服务

线性稳压器、开关稳压器IC：LDO、DC-DC转换器设计工具选型指南

描述- 本指南介绍了ROHM网站上的设计工具，用于线性稳压器和开关稳压器IC（LDO和DC-DC转换器）的开发。内容包括拓扑选择、参考设计、电路设计、PCB设计、评估等各个阶段的设计工具使用方法。指南提供了在线模拟器、仿真模型、计算表等工具，帮助设计师进行电路设计和评估。此外，还提供了数据表、评估板、应用笔记等资源，以支持整个开发过程。

型号- BD9BXXX,BD9106FVM,BD9A301MUV-LB,BD9E301EFJ-LB,BD9E200FP4-Z,BDXXHA5 SERIES,BD80C0AWFP-C,BDXXHA3 SERIES,BD9GXXX,BDXXD0A SERIES,BHXXNB1 SERIES,BDXXIA5,BUXXJA2MNVX-C SERIES,BD9851EFV,BD9P205MUF-C,BD00EA5,BD9P155EFV-C,BAXXDD0 SERIES,BDXXGC0 SERIES,BD9G102G-LB,BD9C301FJ,BD9E100FJ-LB,BD9141MUV,BD90610EFJ-C,BHXXMA3 SERIES,BD750L2EFJ-C,BD950N1WG-C,BUXXJA2DG SERIES,BD9P135MUF-C,BUXXTD3 SERIES,BD9E301EFJ,BD9S400MUF-C,BD9S201NUX-C,BD90302NUF-C,BD9F800MUX-Z,BDXXIC0,BDXXHA5,BDXXHA3,BD9G401EFJ-M,BD00D0A,BD9E104FJ,BD9P255MUF-C,BD9G341AEFJ,BHXXNB1,BD9FXXX,BHXXPB1 SERIES,BD9EXXX SERIES,BAXXCC0 SERIES,BUXXJA2VG SERIES,BD9A100MUV,BDXXFA1FP3 SERIES,BHXXM0A,BD433M5FP-C,BHXXMA3,BD95841NUV,BD9A101MUV-LB,BDXXGA3,BD450M2FP3-C,BUXXJA2DG,BAXXBC0 SERIES,BDXXHC0 SERIES,BDXXHC0,BD90620EFJ-C,BDXXGA5,BDXXHC5,BD9A300MUV,BD9E302EFJ,BD9G341AEFJ-LB,BDXXFA1MG-M SERIES,BD933N1G-C,BD750L5FP-C,BUXXTA2,BAXXDD0,BD9P235MUF-C,BD9P235EFV-C,BD9B200MUV,BD933N1EFJ-C,BD950N1EFJ-C,BD70522GUL,BD9S200MUF-C,BDXXFD0 SERIES,BD9E303EFJ-LB,BD9D320EFJ,BDXXGC0,BDXXFA1FP3,BAXXCC0,BD9AXXX,BD9DXXX SERIES,BD433M2FP3-C,BD90640EFJ-C,BA178MXX SERIES,BD9G201EFJ-M,BDXXGA3 SERIES,BD9C601EFJ,BUXXTA2 SERIES,BDXXFD0,BA1117 SERIES,BD9E201FP4-Z,BUXXSA4,BUXXSA5,BD9137MUV,BD9E303EFJ,BDXXFC0 SERIES,BD9A201FP4-LBZ,BHXXSA3,BD9BXXX SERIES,BD00EA5 SERIES,BD9P205EFV-C,BD433M5FP2-C,BD933N1WG-C,BAXXJC5,BDXXFC0,BAXXBC0,BD95831NUV,BD9F500QUZ,BD9CXXX SERIES,BDXXIA5 SERIES,BHXXRB1 SERIES,BD9A600MUV,BD9E101FJ,BD9B301MUV,BD9B100MUV,BD9P155MUF-C,BD950N1WEFJ-C,BD9D321EFJ,BD35395FJ,BDXXGA5 SERIES,BD9A400MUV,BD9P135EFV-C,BA1117,BD9C501EFJ,BUXXJA2VG,BD9S300MUF-C,BD9F800MUX,BUXXTD2 SERIES,BD9B300MUV,BUXXSA5 SERIES,BDXXFA1MG-M,BA178XX,BD450M5FP2-C,BD9EXXX,BDXXD0A,BUXXTD3,BUXXSD5 SERIES,BD9E101FJ-LB,BD8P250MUF-C,BHXXRB1,BD95861NUV,BUXXTD2,BD9E100FJ,BD9P255EFV-C,BD9B500MUV,BD450M5FP-C,BD9E300EFJ-LB,BD00C0AWFP-C,BDXXHC5 SERIES,BDXXIC0 SERIES,BD9C401EFJ,BDXXKA5 SERIES,BD00D0A SERIES,BHXXM0A SERIES,BD90620HFP-C,BD9B600MUV,BUXXSD2 SERIES,BD9D300MUV,BD9CXXX,BDXXC0A,BD9FXXX SERIES,BD95821NUV,BUXXJA2MNVX-C,BD9611MUV,BDXXKA5,BUXXSD5,BD450M2EFJ-C,BD933N1WEFJ-C,BUXXSD2,BD9G500EFJ-LA,BD9B400MUV,BA178MXX,BDXXC0A SERIES,BD9GXXX SERIES,BD9DXXX,BAXXJC5 SERIES,BD733L2EFJ-C,BHXXSA3 SERIES,BD9139MUV,BD90640HFP-C,BD9E304FP4-LBZ,BA178XX SERIES,BD9G201EFJ-LB,BUXXSA4 SERIES,BD950N1G-C,BD733L5FP-C,BD9P105EFV-C,BHXXPB1,BD9P105MUF-C,BD9E300EFJ,BD9AXXX SERIES,BD433M2EFJ-C,BD9G101G,BD9130NV

03.2023 - ROHM - 用户指南 - Ver. 1.1 代理服务技术支持采购服务

【产品】可实现高达3.0A输出电流的超低压差线性稳压器BD3512MUV，还可满足各类低功耗应用需要

全球知名的半导体厂商罗姆(ROHM)公司推出了一款可在极低的输入电源下工作的超低压差线性稳压器——BD3512MUV。它能够在低输入至输出电压应用中提供理想的性能。该芯片通过使用最大导通电阻RON =100mΩ的内置N沟道功率MOSFET，能够实现最小化输入至输出电压差。通过降低压差，该线性稳压器可实现高达3.0A的高输出电流，从而降低转换损耗。

2019-01-13 - 新产品代理服务技术支持采购服务