【应用】恒流/恒压线性充电器A4051和A4056，适用于数码摄像机锂电子电池充电

时间： 2019-06-12 来源：AiT

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随着生活水平的提高和科技的发展，数码摄像机已经逐步走进人们的生活中，帮助人们记录美好的时光。数码摄像机通过感光元件将光信号转变成电流，再将模拟电信号转变成数字信号，由专门的芯片进行处理和过滤后得到的信息还原出来就是我们看到的动态画面了。作为手持设备，数码摄像机一般都是使用锂电池进行供电，当长时间使用后，需要对锂电池进行再次充电，保证数码摄像机能够继续使用。因此，锂电池充电器件的优劣，关系着锂电池能否安全且正常的充电。

图1 使用数码摄像机记录美好的时刻

正常来说，影响锂电池安全且有效充电的因素主要有电压、电流和温度，因此，在充电器设计中要着重控制好这三个因素。锂电池充电器充电流程一般分为三个阶段：1、充电电路先检测有输出短路或过载保护模式，如系统正常且电池电压是否为3V，若电池高于3V则进入恒流充电，否则以恒流10%的电流进行预充电；2、在恒流快充阶段：将电池电压升高至4.2V；3、恒压充电阶段：电池电压升到4.2V后不再升高，充电电流递减，直至达到恒定电流的10%停止充电。

基于上述锂电池充电要求，为了能够保证数码摄像机锂电池能够安全且正常的充电，AIT公司推出了适用于单节锂电池充电的恒流/恒压线性充电器-A4051和A4056，如图2，即为AiT公司推出的基于这两款锂电池充电器的数码摄像机应用方案。该充电器只需通过内置的MOSFET结构电路，无需外接监测电阻，即可监测锂电池当前状态。在正常工作时，充电电压均固定为4.2V，充电电流可通过单个电阻在外部进行编程，通过编程，A4051的充电电流峰值可达1000mA，而A4056的充电电流峰值为500mA。在达到最终浮动电压后，当充电电流降至编程设定值的1/10时，充电器则会自动终止充电进程。而且，在充电过程中，该充电器会通过热反馈来调节充电电流，避免电池在高功率操作或高环境温度的应用环境下温度过高，降低了充电过程中电池发生过热危险的几率。

若此时我们将充电电源（如墙上适配器或USB电源）拔掉，该充电器则会自动进入低电流工作模式，电池漏电流小于2μA，可以有效保证电池不会掉电过多，造成数码摄像机没电而无法使用。如果有设计需求，该充电器同样可以支持关断模式，使芯片工作电流不超过25uA。

图2 基于恒流/恒压线性充电器-A4051和A4056的数码摄像机应用方案

在充电器的工作温度，充电器的工作温度范围为-40°C～+85°C，且A4051支持NTC检测，可以满足数码摄像机正常使用时的环境温度。由于数码摄像机的尺寸较小，因此其所使用的充电封装尺寸也较小。A4056使用的是小尺寸的SOT-26封装形式，A4051使用的是小尺寸的PSOP8封装形式，都可以有效降低电路板上的面积，适合于小型化设计。

图3 恒流/恒压线性充电器-A4056的封装尺寸示意图

图4 恒流/恒压线性充电器-A4051的封装尺寸示意图

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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,

2022/3/17 - AIT - 商品及供应商介绍代理服务技术支持现货查询批量订货

AIT电池充电器选型表

以下表格提供AIT电池充电器选型，包含VIN(V) Min、VIN(V) Max、Shutdown Supply Current、Charge Type、VOUT (V)、Charge Current、Package Type七大选型参数可供选择。

产品型号	品类	VIN(V) Min	VIN(V) Max	Shutdown Supply Current	Charge Type	VOUT (V)	Charge Current	Package Type
A4051	电池充电器	4.25	6.5	50uA	Linear	4.2	1A	PSOP8

选型表 - AIT 立即选型

【产品】超低外部元件要求、紧凑型锂电池充电管理IC A4061，便携式设备充电应用的理想选择

AIT公司推出的A4061是一款单节电池管理IC，完全集成的恒流（CC）/恒压（CV）锂离子电池充电器。其紧凑的封装和最低的外部元件要求使A4061成为便携式设备充电应用的理想选择。

2019-04-25 - 新产品代理服务技术支持现货查询批量订货

Product Introduction

型号- F1812L,A4711,A4712,A2410,FRU500-30,A7425,A7545,A7431A,A7431,A3085A,A74442,A317B,A7539,A7534,FRU110-30,FUB110-16,A7542,FRU300-30,A6115,A4059,A4730,A7530A,A4732,LO RHO F0603L,A7332,A7335,A4061,A4063,A7330,A6120,FRU700-30,A4722,F0603L,A4055,A8167A,A7566,A4056,A4057,A4051,A6110,A4052,FUB110-30,A6500A,F1206L,LO RHO F1812L,A79LXX,AP8024,FRU090-30,A6318A,A7506,FUB200-30,AP8263,FUB075-16,AP8022,A7501,A79XX,A7630,A6540,A7511,A6301,A4001,A6300,A4002,A8169,AP2273,AP8012,FUB135-16,A8946,A9912,A9913,A1117A,A9910,AP8370,A1084,A8230A,AP8002,AP8366,A6318,A4812,A4813,A7523,A7525,A78XX,A7531,A6250C,A7530,FUB200-16,A6250A,A6201,A63250C,FUB185-16,A6303B,A6303A,A8180,A8181,A78LXXA,A4808,A25CM02,A4809,AG2136,A4804,A4805,A4806,A7516,A6306,A6303,A4004,A6305,A6304,A4006,A6140A,A8176,FRU160-30,LO RHO F1206L,A25CM01,AG2008,A6151A,A3232,FUB160-16,A6301A,A8240,A7230A,A78L05,AG2113,A7812,A4786,A8113,LO RHO F0402L,A7142,FRU600-30,A8230,A6300A,AG2106,AG2104,A6516,AG2101,A7231A,FUB160-30,A71116,A7406B,A4809C,A78L24,FRU400-30,F12101L,F0805L,AP8275,LO RHO F0805L,A6501,A6500,FUB135-30,A8131,AH8113,AP8836,FUB155-16,A79L05,A2212,FUB090-16,A2211,A7330A,A7108,A7221A,A7115,A6141,A6140,A8160A,A1118,A317,A2323,A7222A,A2327,FRU135-30,A6800,A2203,A7222,A6250,A7220,FRU250-30,FRU900-30,A79L24,A4777,A4778,FRU800-30,A7805,A4779,A4773,A4774,A7801,A4775,A2358,A4776,A4781,A4782,FLB090-30,A4783,FUB120-16,A78MXX,A74442A,F2920L,A6700,A4770,A4771,A4772,A6151,A2230,FRU185-30,LO RHO F1210L,A6150,A4056B,F1210L,A6100A

2022/8/2 - AIT - 商品及供应商介绍代理服务技术支持现货查询批量订货

AIT 电池管理IC选型表

AIT提供电池管理IC的参数选型，VIN (V)：-0.3~18；Charge Type：Linear，PWM；多种封装：PSOP8，SOT-25，SOP8，SOT-26，SOT-89-5，SOT-23S，DFN6(2×3)。

产品型号	品类	VIN (V)	Shutdown Supply Current（uA）	Charge Type	VOUT (V)	Charge Current（mA、A）	Package Type
A4051MP8R	电池管理IC	4.25~6.5	50uA	Linear	4.2	1A	PSOP8

选型表 - AIT 立即选型

Product Introduction AiT Semiconductor Inc.

型号- F1812L,AG2008,FRU,A7425,A7545,A4037,A7431A,A7431,RS-232,A8366,A3232,A3085A,A431L,24C128,A74442,A7230A,A317B,A78LXX,A7539,A7534,AG2113,A7542,A4032,A4033,RS-485,A7544,A4034,A7142,LO RHO F0402L,A4030,A4031,24C256,AG2106,AG2104,AG2101,A4059,A7231A,A7530A,A7122A,LO RHO F0603L,A7332,A71116,A7335,FUB,A7406B,A4061,A4809C,A4063,A7330,A6120,24CM02,24CM01,24C64,F0805L,AP8275,A6501,LO RHO F0805L,F0603L,A4055,A7566,A4056,A4057,A4051,A6110,A4052,AH8113,24C512,AP8836,AH8115,F1206L,LO RHO F1812L,A79LXX,AP8024,A7506,AP8263,AP8022,A7501,A7330A,A7108,A79XX,A7221A,A7630,A7115,A4001,A7230,A1118,AP2273,AP8012,A317,A8946,A7222A,A1116,A8946;,A1117A,A431,AP8370,A7222,A1084,A7220,24C32,AP8002,A6318,A4812,A4813,A7523,A7801,A2358,A7525,A78XX,A7531,24C08,A7530,A7131,24C02,24C04,A4808,A25CM02,A4809,AG2136,A4804,A4805,A78MXX,A4806,A7516,A7632A,A74442A,A7115B,A6303,A1016,F2920L,A7642,A7121,LO RHO F1210L,A4056B,F1210L,A25CM01,LO RHO F1206L,24C16

2023/7/12 - AIT - 商品及供应商介绍代理服务技术支持现货查询批量订货

AiT（创瑞科技）EVM评估板型号列表

描述- EVM评估板型号列表

型号- A4061E6R,A7220M8R,A4055E5R,A7533E5R,A8167ATE6R-020,A2212G9R,A7516E5R,A2323F9R,A7539E3R,A7501K3R,A8169E6R-025,A2211MS8R,A4006E6R,A4732MS10R,A7530AE3R,A7630E6R,A8169E6R-020,A7542E6R,A7115E5R,A7544MP8R,A4057M8R,A8181E5R,A4002E3SR,A7230MP8R,A7530E5R,A7108E5R,A7221AE6R,A7110E5R,A7131MP8R,A8160AE6R-030,A4052MP8R,A4730TQ10R,A4771E5R,A7506E6R,A2230M8R,A4004J6R,A4781C5R,A8113E5R,A9910M8R,A4772ZE5R,A4778ZMS8R,A7142MP8R,A7530AE5R,A2203MS8R,A4722Q16R,A7523E6R,A7801E6R,A2327MS8R,A7220BM8R,A7530E3R,A7534K3R,A4003M8R,A7332MP8R,A4001E6R,A2327J8R,A4730MS10R,A4714MS10R,A7642E6R,A9913E6R,A4063AJ10R,A4712G10R,A7566E6R,A7115BE5R,A7442AMP8R,A7222E6R,A7632AE6R,A7116E5R,A8176E5R,A2203M8R,A4732TQ10R,A4776E5R,A7330MP8R,A7115BJ6R,A9912M8R,A4786M8R,A4056E6R,A7122E5R,A4778ZE5R,A7130J10R,A4757M16R,A4059MP8,A7231AE6R,A7501E3R,A7545MP8R,A7220AM8R,A4711C6R,A7121AE6R,A4783M8R,A7122J8R,A7330AMP8R,A2331G9R,A4061MP8R,A4002E5R,A7122AE5R,A7220MP8R,A7596S5R,A8180K5R,A2327M8R,A7335MP8R,A7431AMP8R,A7121J10R-ADJ,A7121AE5R,A7525E6R,A4053MSP8R,A8113C5R,A4715MS10R,A7122AE6R,A4051MP8R,A7431MP8R,A7121MSP10R-ADJ,A7531E5R,A7539E5R,A7406AE6R,A8131E5R,A2410TMXP28U,A4782C5R,A7222AE6R,A7230AMP8R,A7530K3R,A7442MP8R,A7534E3R

AIT - 技术文档代理服务技术支持现货查询批量订货

AIT BMIC电池管理选型表

AIT提供以下参数选型，VIN (V)：-0.3~12max；Shutdown Supply Current（uA）：0.1 to 60；VOUT (V)：4.2 to 8.4，多个封装：SOT-26，PSOP8，SOT-25，SOP8，PSOP8，SOT-89-5等。

产品型号	品类	VIN (V)	Shutdown Supply Current（uA）	Charge Type	VOUT (V)	Charge Current	Package Type
A4051	BMIC 电池管理	4.25~6.5	50uA	Linear	4.2	1A	PSOP8

选型表 - AIT 立即选型

【产品】可编程充电电流高达1000mA的线性锂离子电池充电器A4053

AiT公司推出的1A线性锂离子电池充电器A4053是一款适用于单节锂离子电池的完整恒流和恒压线性充电器，其PMSOP封装和较低的外部组件数使A4053非常适合便携式应用。此外，A4053专为在USB电源规格范围内工作而设计。由于采用了内部MOSFET架构，因此不需要外部检测电阻，也不需要隔离二极管。

2019-10-18 - 新产品代理服务技术支持现货查询批量订货

AiT offers 1A Linear Li-ion Batteries Charger IC A4051 for Single-cell Lithium-ion Batteries

AiT is offering A4051 Constant Current ＆ Constant Voltage linear Charger for Single-cell Lithium-ion batteries. The charge voltage is fixed at 4.2V ＆ Charge Current can be programmed externally up to 1A with a single resistor.

2023-06-21 - 产品代理服务技术支持现货查询批量订货

世强硬创新产品在线研讨会：电源管理一站式解决方案（包含DCDC/LDO/MOSFET/二级管/稳压IC/电感/保险丝）

型号- F1812L,LO RHO F1812L,F1206L,A79L05,A79LXX,A7506,A7425,A7501,A7545,A7431A,A7431,A7112,A7596,A4001,A7115,A4002,A7230,A317B,A7230A,A78L05,A317,A7539,A7222A,A1117,A7534,A7121A,A7812,A2203,A7222B,A7542,A7222,A7544,A7466,A7142,LO RHO F0402L,A7220,A79L24,A7805,A4059,A7523,A7721,A7801,A7231A,A7530A,A7525,A7122A,LO RHO F0603L,A7531,A7410,A7530,A7332,A7335,A4061,A7131,A7406B,A4063,A7330,A7406A,A78LXXA,A78L24,F0805L,A7632A,A7115B,LO RHO F0805L,A7115D,F0603L,A4004,A7116,A7115C,F2920L,A4006,A7442A,A7322,A8167A,A4055,A7442,A4056,A7566,A4057,A7642,A4051,A4052,LO RHO F1210L,A7121,A4056B,F1210L,LO RHO F1206L

AIT - 商品及供应商介绍代理服务技术支持现货查询批量订货