宁夏11选5

专业定制医疗锂电池

ldo线性稳压电源是什么_LDO线性稳压器详解

2020-02-11  |  来源:钜大LARGE  |  点击量:33次

一、什么是ldo

宁夏11选5LDOSHIYIZHONGXIANXINGWENYAQI。XIANXINGWENYAQISHIYONGZAIQIXIANXINGQUYUNEIYUNXINGDEJINGTIGUANHUOFET,CONGYINGYONGDESHURUDIANYAZHONGJIANQUCHAOEDEDIANYA,CHANSHENGJINGGUODIAOJIEDESHUCHUDIANYA。SUOWEIYAJIANGDIANYA,SHIZHIWENYAQIJIANGSHUCHUDIANYAWEICHIZAIQIEDINGZHISHANGXIA100mVZHINEISUOXUDESHURUDIANYAYUSHUCHUDIANYACHAEDEZUIXIAOZHI。


ZHENGSHUCHUDIANYADELDO(DIYAJIANG)WENYAQITONGCHANGSHIYONGGONGLVJINGTIGUAN(YECHENGWEICHUANDISHEBEI)ZUOWEIpNp。ZHEIZHONGJINGTIGUANYUNXUBAOHE,SUOYIWENYAQIKEYIYOUYIGEFEICHANGDIDEYAJIANGDIANYA,TONGCHANGWEI200mVZUOYOU;YUZHIXIANGBI,SHIYONGNpNFUHEDIANYUANJINGTIGUANDECHUANTONGXIANXINGWENYAQIDEYAJIANGWEI2VZUOYOU。FUSHUCHULDOSHIYONGNpNZUOWEITADECHUANDISHEBEI,QIYUNXINGMOSHIYUZHENGSHUCHULDODEpNpSHEBEILEISI。


GENGXINDEFAZHANSHIYONGCMOSGONGLVJINGTIGUAN,TANENGGOUTIGONGZUIDIDEYAJIANGDIANYA。SHIYONGCMOS,TONGGUOWENYAQIDEWEIYIDIANYAYAJIANGSHIDIANYUANSHEBEIFUZAIDIANLIUDEONDIANZUZAOCHENGDE。RUGUOFUZAIJIAOXIAO,ZHEIZHONGFANGSHICHANSHENGDEYAJIANGZHIYOUJISHIHAOFU。



宁夏11选5LDODIYACHAXIANXINGWENYAQIDEJIEGOUZHUYAOBAOKUOQIDONGDIANLU、HENGLIUYUANPIANZHIDANYUAN、SHINENGDIANLU、DIAOZHENGYUANJIAN、JIZHUNYUAN、WUCHAFANGDAQI、FANKUIDIANZUWANGLUOHEBAOHUDIANLUDENG。JIBENGONGZUOYUANLISHIZHEIYANGDE:XITONGJIADIAN,RUGUOSHINENGJIAOCHUYUGAODIANPINGSHI,DIANLUKAISHIQIDONG,HENGLIUYUANDIANLUJIZHENGGEDIANLUTIGONGPIANZHI,JIZHUNYUANDIANYAKUAISUJIANLI,SHUCHUSUIZHESHURUBUDUANSHANGSHENG,DANGSHUCHUJIJIANGDADAOGUIDINGZHISHI,YOUFANKUIWANGLUODEDAODESHUCHUFANKUIDIANYAYEJIEJINYUJIZHUNDIANYAZHI,CISHIWUCHAFANGDAQIJIANGSHUCHUFANKUIDIANYAHEJIZHUNDIANYAZHIJIANDEWUCHAXIAOXINHAOJINXINGFANGDA,ZAIJINGDIAOZHENGGUANFANGDADAOSHUCHU,CONGERXINGCHENGFUFANKUI,BAOZHENGLESHUCHUDIANYAWENDINGZAIGUIDINGZHISHANG,TONGLIRUGUOSHURUDIANYABIANHUAHUOSHUCHUDIANLIUBIANHUA,ZHEIGEBIHUANHUILUJIANGSHISHUCHUDIANYABAOCHIBUBIAN,JI:Vout=(R1+R2)/R2Vref


SHIJIDEDIYACHAXIANXINGWENYAQIHAIJUYOURUFUZAIDUANLUBAOHU、GUOYAGUANDUAN、GUOREGUANDUAN、FANJIEBAOHUDENGQITADEGONGNENG。


二、LDO原理分析

GENJUDIAOZHENGGUANDEGONGZUOZHUANGTAI,WOMENCHANGBAWENYADIANYUANFENCHENGLIANGLEI:XIANXINGWENYADIANYUANHEKAIGUANWENYADIANYUAN。CIWAI,HAIYOUYIZHONGSHIYONGWENYAGUANDEXIAODIANYUAN。ZHEILISHUODEXIANXINGWENYADIANYUAN,SHIZHIDIAOZHENGGUANGONGZUOZAIXIANXINGZHUANGTAIXIADEZHILIUWENYADIANYUAN。ERZAIKAIGUANDIANYUANZHONGZEBUYIYANG,KAIGUANGUANSHIGONGZUOZAIKAI、GUANLIANGZHONGZHUANGTAIXIADE。JIANDANJIESHAOXIAFENLEI:


NpNWENYAGUAN:NEIBUYONGYIGEpNpGUANKONGZHIDALINDUNDIAOZHENGGUAN。LDOWENYAGUAN:DIAOZHENGGUANSHIYIGEpNpGUAN。


Squasi-LDO:DIAOZHENGGUANSHIYOUYIGEpNpGUANKONGZHIYIGENpNGUANLDO(lowdropoutput)DIYACHAXIANXINGWENYAQI


LDODEGONGZUOYUANLISHITONGGUOFANKUIDIAOZHENGMOSFETDEVsdYAJIANGYISHISHUCHUDIANYABUBIAN。SHUCHUDIANYAWENBOXIAO,DIANLIUYEJIAOXIAO,YONGYURFMOKUAIHUOYINPINMOKUAIDENGDUIDIANYAYAOQIUGAODEDIANLU。TEDIANSHICHENGBENDIZAOYINXIAO。QUEDIANSHIXIAOLVDI,SHUCHUDIANLIUXIAO,ZHINENGYONGZAIJIANGYADECHANGHE。BIXUYAOZHUYI,WEILEDADAOWENDINGDEHUILUJIUBIXUSHIYONGFUFANKUI。


XIAMIANZHEISHILDOS-1167SeriesDEJIBENYUANLITU。



GAIDIANLUZHUYAOSHIYOUCHUANLIANDIAOZHENGGUAN、QUYANGDIANZU、BIJIAOFANGDAQIZUCHENG。QUYANGDIANYAJIAZAIBIJIAOFANGDAQIDETONGXIANGSHURUDUAN,YUJIAZAIFANXIANGSHURUDUANDEJIZHUNDIANYAUrefXIANGBIJIAO,LIANGZHEDECHAZHIJINGFANGDAQIAFANGDAHOU,KONGZHICHUANLIANDIAOZHENGGUANDEYAJIANG,CONGERWENDINGSHUCHUDIANYA。DANGSHUCHUDIANYAUoutJIANGDISHI,JIZHUNDIANYAYUQUYANGDIANYADECHAZHIZENGJIA,BIJIAOFANGDAQISHUCHUDEQUDONGDIANLIUZENGJIA,CHUANLIANDIAOZHENGGUANYAJIANGJIANXIAO,CONGERSHISHUCHUDIANYASHENGGAO。XIANGFAN,RUOSHUCHUDIANYAUoutCHAOGUOSUOXUYAODESHEDINGZHI,BIJIAOFANGDAQISHUCHUDEQIANQUDONGDIANLIUJIANXIAO,CONGERSHISHUCHUDIANYAJIANGDI。GONGDIANGUOCHENGZHONG,SHUCHUDIANYAXIAOZHENGLIANXUJINXING,DIAOZHENGSHIJIANZHISHOUBIJIAOFANGDAQIHECHUANLIANDIAOZHENGGUANHUILUFANYINGSUDUDEXIANZHI。HUANLUNEIDEFUFANKUIZONGSHIQIANGZHIBIJIAOFANGDAQIDIAOJIESHURULIANGDUANDEDIANYASHIQIXIANGDENG。


宁夏11选5WENYAGUANDELINGYIGEZHONGYAODEZHIBIAOJIUSHIWENDINGXING,ZAIWOMENDESHEJIXIANLUZHONGCHANGCHANGKANDAOZAIQISHUCHUDUANHUIYOUDADAXIAOXIAODEDIANRONG,QIZUOYONGSHISHENYAONI?XIAMIANJUTIFENXIWENYAGUANDEFANKUIJIHUILUWENDINGXING。QIANMIANTIDAOGUOSANZHONGWENYAGUAN:


1、NpNWENYAGUAN



宁夏11选5LIRU:LM340LM317BIJIAOLAODE3DUANWENYAGUAN


2、LDOWENYAGUAN



宁夏11选5LIRU:S-1167Series


3、ZHUNLDOWENYAQI



SANZHONGWENYAQIDEZUIDAQUBIEZAIYUYAJIANGHEJIEDIYINJIAODIANLIU。HENMINGXIANNpNHEZHUNLDODEWENYAGUANZAIDIAOZHENGGUANSHANGSHAOWEIFUZADIAN,SUOYIYAJIANGYEDAXIE。DALINGUANDEZENGYIHENGAO,SUOYIZHIXUYAOHENXIAODEDIANLIUJIUKEYIQUDONG,ZHUNLDOYESHIZHEIYANG,IGNDHENXIAO。pNpGUANDEFANGDAXISHUYIBANSHI15-20,LDODEIGNDDIANLIUNENGDADAOFUZAIDIANLIUDE7%。NpNWENYAGUANDEZUIDAHAOCHUJIUSHIWUTIAOJIANDEWENDING(DADUOSHUBUXUYAOJIAWAIJIEDIANRONG),LDOZEXUYAOZAISHUCHUDUANJIASHANGDIANRONG,YIJIANSHAOHUILUDAIKUANJITIGONGXIEZHENGDEXIANGWEIBUCHANG。


宁夏11选5SUOYOUDEWENYAQIDOUSHIYONGFUFANKUIHUILUYIBAOCHISHUCHUDIANYADEWENDING。DANFANKUIXINHAOZAITONGGUOHUILUHOUDOUYOUYIDINGDEZENGYIHEXIANGWEIBIANHUA。RUGUOFANKUIXINHAOXIANGWEIYOU180DUBIANHUA,FUFANKUIJIUHUIBIANCHENGZHENGFANKUI,ZAOCHENGSHUCHUBUWENDING。YINCIFANKUIXINHAOJINGGUOZHENGGEHUILUDEXIANGWEIPIANYI,XUYAOYOUZHISHAO20DUDEXIANGWEIYUDU,ZHEIYANGCAINENGBAOZHENGDIANLUDEWENDING。(XIANGWEIYUDUDINGYIWEIHUILUZONGDEXIANGWEIPIANYIYU-180DUDECHA)。


三、LDO的相关参数

1、SHUCHUDIANYA(OutputVoltage)


宁夏11选5SHUCHUDIANYASHIDIYACHAXIANXINGWENYAQIZUIZHONGYAODECANSHU,YESHIDIANZISHEBEISHEJIZHEXUANYONGWENYAQISHISHOUXIANYINGKAOLVDECANSHU。DIYACHAXIANXINGWENYAQIYOUGUDINGSHUCHUDIANYAHEKEDIAOSHUCHUDIANYALIANGZHONGLEIXING。GUDINGSHUCHUDIANYAWENYAQISHIYONGBIJIAOFANGBIAN,ERQIEYOUYUSHUCHUDIANYASHIJINGGUOCHANGJIAJINGMIDIAOZHENGDE,SUOYIWENYAQIJINGDUHENGAO。DANSHIQISHEDINGDESHUCHUDIANYASHUZHIJUNWEICHANGYONGDIANYAZHI,BUKENENGMANZUSUOYOUDEYINGYONGYAOQIU,DANSHIWAIJIEYUANJIANSHUZHIDEBIANHUAJIANGYINGXIANGWENDINGJINGDU。


宁夏11选52、ZUIDASHUCHUDIANLIU(MaximumOutputCurrent)


YONGDIANSHEBEIDEGONGLVBUTONG,YAOQIUWENYAQISHUCHUDEZUIDADIANLIUYEBUXIANGTONG。TONGCHANG,SHUCHUDIANLIUYUEDADEWENYAQICHENGBENYUEGAO。WEILEJIANGDICHENGBEN,ZAIDUOZHIWENYAQIZUCHENGDEGONGDIANXITONGZHONG,YINGGENJUGEBUFENSUOXUDEDIANLIUZHIXUANZESHIDANGDEWENYAQI。


宁夏11选53、SHURUSHUCHUDIANYACHA(DropoutVoltage)


宁夏11选5SHURUSHUCHUDIANYACHASHIDIYACHAXIANXINGWENYAQIZUIZHONGYAODECANSHU。ZAIBAOZHENGSHUCHUDIANYAWENDINGDETIAOJIANXIA,GAIDIANYAYACHAYUEDI,XIANXINGWENYAQIDEXINGNENGJIUYUEHAO。BIRU,5.0VDEDIYACHAXIANXINGWENYAQI,ZHIYAOSHURU5.5VDIANYA,JIUNENGSHISHUCHUDIANYAWENDINGZAI5.0V。4.JIEDIDIANLIU(GroundpinCurrent)


JIEDIDIANLUIGNDSHIZHICHUANLIANDIAOZHENGGUANSHUCHUDIANLIUWEILINGSHI,SHURUDIANYUANTIGONGDEWENYAQIGONGZUODIANLIU。GAIDIANLIUYOUSHIYECHENGWEIJINGTAIDIANLIU,DANSHICAIYONGpNpJINGTIGUANZUOCHUANLIANDIAOZHENGGUANYUANJIANSHI,ZHEIZHONGXIGUANJIAOFASHIBUZHENGQUEDE。TONGCHANGJIAOLIXIANGDEDIYACHAWENYAQIDEJIEDIDIANLIUHENXIAO。5.FUZAIDIAOZHENGLV(LoadRegulaTIon)


FUZAIDIAOZHENGLVKEYITONGGUOTU2-1HESHI2-1LAIDINGYI,LDODEFUZAIDIAOZHENGLVYUEXIAO,SHUOMINGLDOYIZHIFUZAIGANRAODENENGLIYUEQIANG。




QIZHONGVloadFUZAIDIAOZHENGLVImaxLDOZUIDASHUCHUDIANLIU


VtSHUCHUDIANLIUWEIImaxSHI,LDODESHUCHUDIANYAVoSHUCHUDIANLIUWEI0.1mASHI,LDODESHUCHUDIANYA


VFUZAIDIANLIUFENBIEWEI0.1mAHEImaxSHIDESHUCHUDIANYAZHICHA6.XIANXINGDIAOZHENGLV(LineRegulaTIon)


XIANXINGDIAOZHENGLVKEYITONGGUOTU2-2HESHI2-2LAIDINGYI,LDODEXIANXINGDIAOZHENGLVYUEXIAO,SHURUDIANYABIANHUADUISHUCHUDIANYAYINGXIANGYUEXIAO,LDODEXINGNENGYUEHAO。



宁夏11选5VlineLDOXIANXINGDIAOZHENGLVVoLDOMINGYISHUCHUDIANYAVmaxLDOZUIDASHURUDIANYA


宁夏11选5VLDOSHURUVoDAOVmax‘SHUCHUDIANYAZUIDAZHIHEZUIXIAOZHIZHICHA7.DIANYUANYIZHIBI(pSSR)


宁夏11选5LDODESHURUYUANWANGWANGXUDUOGANRAOXINHAOCUNZAI。pSRRFANYINGLELDODUIYUZHEIXIEGANRAOXINHAODEYIZHINENGLI。


四、LDO的用途以及注意事项

DIYACHAXIANXINGWENYAQIDEDIANXINGYINGYONGRUTU3-1SUOSHI。TU3-1(a)SUOSHIDIANLUSHIYIZHONGZUICHANGJIANDEAC/DCDIANYUAN,JIAOLIUDIANYUANDIANYAJINGBIANYAQIHOU,BIANHUANCHENGSUOXUYAODEDIANYA,GAIDIANYAJINGZHENGLIUHOUBIANWEIZHILIUDIANYA。ZAIGAIDIANLUZHONG,DIYACHAXIANXINGWENYAQIDEZUOYONGSHI:ZAIJIAOLIUDIANYUANDIANYAHUOFUZAIBIANHUASHIWENDINGSHUCHUDIANYA,YIZHIWENBODIANYA,XIAOCHUDIANYUANCHANSHENGDEJIAOLIUZAOSHENG。


宁夏11选5GEZHONGXUDIANCHIDEGONGZUODIANYADOUZAIYIDINGFANWEINEIBIANHUA。WEILEBAOZHENGXUDIANCHIZUSHUCHUHENGDINGDIANYA,TONGCHANGDOUYINGDANGZAIDIANCHIZUSHUCHUDUANJIERUDIYACHAXIANXINGWENYAQI,RUTU3-1(b)SUOSHI。DIYACHAXIANXINGWENYAQIDEGONGLVJIAODI,YINCIKEYIYANZHANGXUDIANCHIDESHIYONGSHOUMING。TONGSHI,YOUYUDIYACHAXIANXINGWENYAQIDESHUCHUDIANYAYUSHURUDIANYAJIEJIN,YINCIZAIXUDIANCHIJIEJINFANGDIANWANBISHI,RENGKEBAOZHENGSHUCHUDIANYAWENDING。


ZHONGSUOZHOUZHI,KAIGUANXINGWENYADIANYUANDEXIAOLVHENGAO,DANSHUCHUWENBODIANYAJIAOGAO,ZAOSHENGJIAODA,DIANYADIAOZHENGLVDENGXINGNENGYEJIAOCHA,TEBIESHIDUIMONIDIANLUGONGDIANSHI,JIANGCHANSHENGJIAODADEYINGXIANG。ZAIKAIGUANXINGWENYAQISHUCHUDUANJIERUDIYACHAXIANXINGWENYAQI,RUTU2-3(c)SUOSHI,JIUKEYISHIXIANYOUYUANLVBO,ERQIEYEKEDADATIGAOSHUCHUDIANYADEWENYAJINGDU,TONGSHIDIANYUANXITONGDEXIAOLVYEBUHUIMINGXIANJIANGDI。


ZAIMOUXIEYINGYONGZHONG,BIRUWUXIANDIANTONGXINSHEBEITONGCHANGZHIYOUYIZUDIANCHIGONGDIAN,DANGEBUFENDIANLUCHANGCHANGCAIYONGHUXIANGGELIDEBUTONGDIANYA,YINCIBIXUYOUDUOZHIWENYAQIGONGDIAN。WEILEJIESHENGGONGDIANCHIDEDIANLIANG,TONGCHANGSHEBEIBUGONGZUOSHI,DOUXIWANGDIYACHAXIANXINGWENYAQIGONGZUOYUSHUIMIANZHUANGTAI。WEICI,YAOQIUXIANXINGWENYAQIJUYOUSHINENGKONGZHIDUAN。YOUDANZUXUDIANCHIGONGDIANDEDUOLUSHUCHUQIEJUYOUTONGDUANKONGZHIGONGNENGDEGONGDIANXITONGRUTU3-1(d)SUOSHI。




技术专区汽车系统中的典型电压拓扑结构应用如何通过可调DC-DC改装成可数控的开关稳压电源三端稳压管怎么接线及方法说明三端稳压管型号稳压值及详细资料ADI推powerbyLinear™的LT8603能接受42V输入电压
钜大精选

钜大核心技术能力

  • 4

    高能量密度

    宁夏11选5285WASHI/GONGJIN,700WASHI/SHENG

    高倍率

    100℃CHIXUFANGDIAN

    高温

    80℃GAOWENXUNHUAN200ZHOU

    高电压

    SHANGXIANDIANYA4.45V,PINGTAIDIANYA3.85V

  • 2

    低温充电

    宁夏11选5-40℃DIWEN0.2℃CHONGDIAN

    低温放电

    -50℃FANGDIAN,RONGLIANGBAOCHI75%YISHANG

  • 1防爆

    满足EX ia\ib IIA
    IIB T1~T4防爆标准

    200Wh/kg高能量密度
    改性三元化学体系