【选型】烟雾报警器的电源选型：LDO A6250C，静态电流仅2uA

时间： 2020-05-27 来源：世强

技术问答

随着建筑行业的快速发展，伴随着安全系统也是应运产生，如为了有效的保证人们的生命财产安全，建筑楼道和房间都会安装烟雾报警器，一旦发生火灾，人们可以在第一时间安全撤离，以下是烟雾报警器的部分框图：

由上图可知，该系统是电池供电，所以对于传感器的电源要求如下：

1. 静态电流要3uA以下；

2. 输出电压2.3V，电池的输入电压3.7V-4.2V，输出电流20mA，尖峰电流达到150mA；

3. 封装要小；

在该系统中，我给其推荐的电源芯片为AIT创瑞科技的LDO A6250C，该芯片有以下几点优势：

1. 静态电流仅2uA，可以极大降低系统功耗，延长电池的使用寿命；

2. 输入电压1.8V-6V，输出电流250mA，输出电压有固定输出2.3V，完全满足客户需求；

3. 封装为SOT-23（仅2.9*2.8mm），节省了PCB空间；

综上所述，A6250C为烟雾报警器系统传感器电源的不二之选。

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用户43004597 Lv7. 资深专家 2020-06-17

静态电流仅2uA，可以极大降低系统功耗，延长电池的使用寿命；

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型号- 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A Fabless IC Design Company for Analog & Mixed Signal Circuits

型号- TWSS,TWSR,TMBTA94,TMBZ5229B,AM6354A,F0805L010,KOL7050,TMBTA92,TESD6A6V8W6,TSODJ28CA-SH,TMBR340F,TESD5L3.3C,AM4102,TMBZ5228B,TWSF,TMBT6520,TRB751V-40,F0805L020,TM3Z9V1,TSODJ12CA-SH,TESD5L3.3,TWSI,TSOD4005-SH,F1210L200SL,TMSZ5238B,TMBT6517,F1206L400SL,TDTC114YE,TMSZ5239B,TMBTA55L,F0805L260SLTH,TMBR120F,TM5Z22V,KSS7050,TMBT4403W,AM7246A,F0805L050-9,TMSZ5237B,T2SD1781KR,F0603L,TMBTA56L,TESD9D3.3C,SM220B-3200B,F2920L200,KF868.35,TESD5Z5.0C,F1210L005,TBC807-40L,KOG3225,AM6310,KVL7050,TBZX84C7V5,F0805L050,TUDZS20B,TM5Z24V,MBTXXX,TBC807-40W,TMBT4401L,KRT7050,RB520G-30,TMBT4401W,2SAXXXM3,F1812L020-60,KF8042,TMBT4403L,TMBTA42,MBTHXXX,TSODJ7.5CA-SH,AP8370,TBZT52C2V4,TBZT52C2V7,KTC7050,TBC848CPDW,AP8368,F1210L020,AP8366,TBC847BDW,KF8037,A4810,RB520CS-30,A4812,A4813,AM8958,F2920L300-15,F0805L035,T2SC1623SW,A4808,A4809,KF8021,TBAT54TW,KF8022,WSA,KF8023,A4804,F1210L010,KF8024,A4805,WSC,A4806,TSODJ5.0A-SH,TDTC114TE,KF8028,WSF,WSI,TBZX84B4V7,WSM,WSS,WSR,F2920L300-24,MDL301,KSM1610,F2920L250,KF8010,TSODJ45A-SH,TSODJ30CA-SH,MBTXXXM,KF8011,MBTXXXL,KF8012,ESD5V0S1,KF8013,AO324A,TBA277,AM2309,MBTXXXW,KF8017,AM2308,AM2307,AM2306,MBTXXXT,AM2305,AM2304,AM2303,AM2302,TBZT52B3V3,TBC847BL,AM2301,KR915,AM2300,TBZT52B3V0,TBZT52B3V6,TMBZ5221B,TBC847BT,TDTC115EE,FM401-407,TBZT52B3V9,TSTZ5.6N,TBC847BW,F1210L035,TBAS21C,F2920L260,KF8002,KF8007,TBAT54L,KF8008,KF8009,TBAS21H,TESD8H5.0C,AM4501,TBAT54H,TBC847CL,A24C256,TBAT54W,TRB501V-40,TBC847CW,MBD2836,F1206L600SL,AM4953,AM0830H,MBD2838,TBAS20H,TBSS84DW,F0805L075,F1210L400SL,F1210L050,AM2319,AM2318,AM2317,AM2313,AM2312,TBC847AL,AM2311,AM2310,TDTA114EE,KF7139,TBAV70L,F1206L025-24,2SAXXX,TBAV70W,TBC847AW,TBAV70T,TBZX84C3V3,TBZX84C3V0,MBTHXXXL,TBC817-25L,TSODJ36A-SH,TBZX84C3V9,TMBR0520E,BAV99L,TMBR0520F,TBZX84C3V6,TMBZ5225B,AM1013,AM1012,TBC817-25W,A6141,AM2342,KF7128,KF7126,F1210L075,A317,TM3Z18V,TBZT52C6V2,TBZT52C6V8,BAV99W,TUDZS8.2B,F1206L150SL,TSODJ58A-SH,BAT54XW,TMBZ5227B,BAT54XL,MBD7000L,MBTAXXX,TMBZ5226B,2SCXXXM3,A6151,TM3Z16V,A6150,TMBT5551L,A24C2048,AM2N7002DW,TBZX84C39,A7425,A7431,TBZX84C43,TBZX84C47,TM3Z27V,TBZT52B7V5,KF4053,TSODJ26CA-SH,SM320C-5200C,TGSOT12C,QCC4A,TSODJ7.0CA-SH,BZX84CXXX,TMBT3904T,TBAV3004,TBZX84C51,TMBT3904L,TSODJ20A-SH,TSD12,TESD5Z12,TBZX84C18,TESD8LL5.0C,F1206L050-24,TBZX84C16,KVP7050,A6115,TBZX84C22,ESD7DXXX,TBZX84C20,TBZX84C24,A6120,KF4033,F1206L200,KOP7050,TUDZS18B,TBZX84C27,TBZX84C33,A7442,TBZX84C30,TBAT46,TBZX84C36,A6110,F0805L125SL,TMBR1100F,TM3Z24V,TESD9D5.0,BAV3004,TMSZ5240B,A6318A,TMUN5335DW,BC8XXXW,MBD3004X,X8050XL,A6540,2SDXXX,KF4014,T9012P,T9012Q,BC8XXXL,KF4012,T9012R,HFMA2X0,KF4010,TSODJ18A-SH,AO321A,TSOD4001-SH,TMBT5551DW,AM0765AH,TSD05,TBZX84C11,TBZX84C10,T9013P,TBZX84C15,T9013Q,T9013R,TBZX84C13,T9013S,TBZX84C12,TM3Z22V,QCC12,TMUN5313DW,TBC846BL,TM5Z9V1,T9014Q,T9014R,T9014S,TMBZ5231B,TBC846BW,TDTC114EE,TUDZS4.7B,MBD301,TSM530AF,F0603L075SL,AM4920,TM3Z20V,T9015Q,T9015R,T9015S,TMBZ5230B,TESD5Z3.3,RB551V-30,T1SS360T,TMBTA14,TMBTA13,TMUN5113,TMUN5114,KVDH,MBR120XSF,KVDF,TMSZ5244B,TMUN5111,TUDZS12B,TMUN5112,KMA,AM1465H,ZTTCC,KMB,KMF,ZTTCE,AO2722,BAV170,TMSZ5243B,F1210L350SL,KMU,TSODJ7.0A-SH,KMT,KVCM,TM3Z5V1,F0402L035SL,M1MA142WX,TM3Z5V6,TMBR260F,TUDZS11B,A6516,T2SA1774R,T2SA1774Q,TMSZ5242B,TBZX84C8V2,MBTHXXW,ZTTCS,ZTTCR,ZTTCW,ZTTCV,TUDZS4.3B,KOC,TUDZS10B,TMUN5132,TESD8D5.0C,TESD5D5.0C,KOG,TMBR3100F,TMSZ5241B,TESD9D12,TESD8D3.3,KOH,TDAN202U,A6505,KOM,F1206L200SL,KOL,AP8275,A6501,TDAN202K,A6500,KOP,ESD9DXXX,HFM101-108,TMUN5141,TDTC123JE,TEFMAF103,TEFMAF102,TEFMAF101,A4757,TMBT3906W,TMSZ5248B,TEFMAF104,A7330A,ESDXXXM,DTDXXX,TDTA144EE,TUDZS16B,TMBR130E,TMBR130F,QCC8C,TMSZ5247B,TBZX84B9V1,T2SB1197KR,T2SB1197KQ,TM3Z62V,F0805L075SL,F0805L100,TUDZS15B,TBAW56L,TMBT3904W,A4778,TMSZ5246B,A7805,A7801,A4776,A4781,A4782,TM5Z5V6,A4783,ESDAXXXL,TBAW56W,TBZX84C68,TM5Z5V1,F1812L300,TBZX84C62,KSG,BAV199,AM6260,KSM,A7115B,KSS,TMSZ5245B,A4771,TBZX84C75,A4772,TMBT3906T,KTD,TESD5Z7.0,KTC,KMC7015,TUDZS13B,TMBT3906L,KF9064,F1812L,KF9066,KF9067,MB10S,KF9068,KTM,KF9069,A7431A,KVLM,KOC5032,TMBT5401DW,TBC847CDW,KF9061,KF9062,KF9053,KF9055,TMBR330F,KF9057,ESDAXXXW5,A8079,ESDAXXXW6,KVC,TRB550V-30,TBC846BPDW,KF9050,TM5Z33V,KVL,MMSD4148,KF9043,TBZX84C4V3,KF9044,TBAS16L,KVP,TFMAF401,TBAS16H,TFMAF402,KF9049,TFMAF403,TSODJ40A-SH,TFMAF404,TFMAF405,TFMAF406,TFMAF407,T2SC4081S,TBZX84C4V7,T2SC4081Q,T2SC4081R,2SCXXXL,TBAS16W,8X50XX,RB520S-30,TDTB123Y,KF9031,KF9032,2SCXXXW,KF9036,A25Q32,SMCJXXXA,KR303.825,TESD6V8,TCMH,TCMS,A24C512,TMBTA44L,RB520S-40,TCMW,KF9030,F0603L100SL,F0603L016,KF9022,TPIQ,KOG2016,KF9024,AP8024,KF9025,TPIO,KF9026,KF9027,TBAS16BS,TMBT2222AL,KF9028,KF9029,AP8022,F0603L010,KVPM,KF0203,TBZT52B36,F0603L012,AM3406A,TMBT2222AT,TPIU,TM5Z2V7,TESD7D5.0,T1SS356,T1SS355,TM5Z2V4,TESD8LL5.0,TSODJ8.0A-SH,H8X50X,TBZX84B5V1,AP8012,KF9013,TBC848BDW,F1210L110,KF9016,AM4264,F0603L020,TBZX84B5V6,AM0465H,A1117A,F0603L025,TPIB,TPIA,F1812L300SL,A25D80,F2920L100,F1812L160-16,AP8001,AP8002,F1812L160-12,KF9003,TBC850CL,KF9006,TBZT52B18,KF9008,TBZT52B15,TBZT52B16,TBSS5240L,UMA1XX,TBZT52B2V4,TBZT52B22,

商品及供应商介绍 - AIT - 2022/3/17 PDF 英文下载

A6303C CMOS LOW DROPOUT REGULATOR (LDO) 300mA ULTRA-LOW NOISE, ULTRA-FAST RESPONSE

型号- A6303CJ4R-XX,A6303CE3R-XX,A6303CE5R-XX,A6303C,A6303C SERIES,A6303CC5VR-XX,A6303CE3VR-XX,A6303CJ4VR-XX,A6303CE5VR-XX,A6303CC5R-XX

数据手册 - AIT - REV1.21 - AUG 2018 PDF 英文下载查看更多版本

【经验】线性稳压器A1117A-ADJ在大功耗倍频放大模块中的合理使用，避免被烧坏

线性稳压器（LDO）在各个产品的电源系统中应用非常广泛，但在一些功耗比较大的产品中，如果LDO使用不当，很容易使得LDO的工作温度超过自身承受范围，从而导致LDO损坏。本项目采用的是AiT的线性稳压器A1117A-ADJ来构成电源电路，通过结合项目实际调试测试过程中遇到的问题，来说明如何在大功耗倍频放大模块中更合理的使用该款LDO芯片。

设计经验发布时间 : 2020-07-27

请帮忙推荐一款可以替代合泰的LDO HT7333 SOT-89-A封装？

推荐创瑞科技的A6201AK3R-33A，可以PIN TO PIN替换，资料：https://www.sekorm.com/doc/1396964.html。

技术问答发布时间 : 2019-11-30

A6500F CMOS LOW DROPOUT REGULATOR (LDO) 6V, 500mA, 0.5uA IQ HIGH PSRR LOW DROPOUT LINEAR REGULATOR

型号- A6500FE3VR-XX,A6500FK3R-XX,A6500FE5VR-XX,A6500F,A6500FE5R-XX,A6500FK3VR-XX,A6500FJ4R-XX,A6500FJ4VR-XX,A6500FE3R-XX

数据手册 - AIT - REV1.0 - AUG 2024 PDF 英文下载

AIT CMOS LDO稳压器选型表

AIT提供CMOS LDO稳压器的参数选型，VIN (V)：-0.3V~45V；Iq(uA) ：0.8uA~100uA；PSRR：-83dB @1kHz~83db@1kHz；多种封装：SOT-25，SC70-5，SOT89-3，TO-252，DFN4(1x1)，SOP8等。

产品型号	品类	VIN (V)	VOUT (V)	Iq (uA)	Accuracy (%)	Output Ports	PSRR（dB）	Enable Pin	VDROPOUT (mV)	Output Current（mA、A）	Package Type
A6150E5R-25A	CMOS LDO稳压器	1.8~8.0	1.2~5.0	25	±2	1	65dB@1kHz	Enable Pin	200mV@100mA	150mA	SOT-25