【应用】SGM41526锂电池充电管理芯片助力室外工业光能燃气表设计，充电效率95.2%，最大4A充电

时间： 2022-12-01 来源：世强

技术问答

光能款智能燃气表以吸收太阳能为能源，通过光伏电池吸收太阳能。再通过光伏板给锂电池充电，锂电池给计量采样供电使用。光能燃气表将用气数据、电量、信号、阀门状态、异常情况通过NB模组传输到管理平台。

图片6.png

光伏板收集太阳能，同时给锂电池充电，锂电池用来保证在无光照条件下燃气表可以正常使用。在这个过程中就需要一个锂电池充电管理芯片来保证锂电池安全、高效的充电。本文给大家推荐国产圣邦微推出的锂电池充电管理芯片SGM41526。具体的使用框图如下图所示：

1、芯片不需要MCU软件控制，通过外部电阻等配置充电电流等参数：快速充电的最大充电电流由ISET输入设置。电池电流由连接的电阻器RSR检测，最大4A充电，内部Buck PWM开关频率均为1.6MHz；

2、可支持单节、两节、三节不同需求的电池充电：电池单元的数量取决于CELL引脚的不同连接；

3、输入工作电压范围4.5V至22V，宽电压范围支持多种光伏板试用场景；

4、功耗（静态电流7.4μA）及充电效率95.2%，充电表现很好；

5、业级温度等级，封装尺寸均为QFN-5.5x3.5mm-24L。

SGM41526还同时具备一些保护功能：过温保护、输入欠压锁定、输入过电压保护等，在便携式设备、备用电池系统的表现良好，有需求可以在世强平台申请样品测试。

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活动发布时间 : 2024-06-28

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型号- FM9919E,FM9919D,SC662K,TC6291C,FM2539S,FM6368A,FM9918RH,FM9788DB,FM5010F/B,FM6368B,FM6368C,FM9918RL,FM5011HBC4L,FM9918RM,FM5010F/A,FM2842B,FM2539D,FM6330M,XPM5016,XPM5015,TC1252M,FM4057S5,XPM7310,XPM5013,TC6291B,FM4057D,4004E,FM3773HC,FM3773HA,FM3773HB,FM5012D,FM2539AS,FM5011HBD3L,TC2526HB,XPM7305,FM6123D,FM2562A,FM9688BA,TC3789,FM2542AD,TC3788,TC7359,TC7358,FM9919RG,TC3588C,TC2526HA,TC4054R,FM3793B,FM3793A,FM2542AS,FM5011HBD4E,FM9918AH,XPM5118,FM2541ASD,TC7340,TC4056A,FM5011HBD4L,XPM5236,FM9918AL,FM9918AM,XPM6325,FM9688AA,XPM6320,FM2539AD,FM5011HBD5L,FM5011HBB1E,FM7520BSD,FM2539TS,FM9688DA,FM2540D,FM2541AD,FM6335M,XPM5220,FM5013,FM2201D,FM2539ATS,SC1301,FM2541AS,FM6310M,TC1252A.,XPM5218,FM5011HBD2L,FM6310G,TC2525KA,TC2525KB,FM2540ATS,.9017R,FM4057S,FM34093MX,FM7520B,TC22,FM5011HBD5,FM5011HBD4,FM5011HBD6,FM5011HBD1,FM4057E,FM2540AD,FM2542D,FM5011HBD3,TC1252E,TC1252F,FM5001L,TC1252AC,FM2202P,FM5360,FM4058H6L,TC1252D,FM2541S,FM5001H,FM6320M,FM9969,FM5011HBC4,FM5361,XPM5005B,TC4054H.,FM2541D,TC2526KA,TC2526KB,TC12,FM7530B,FM2201P,FM4058H5L,FM2541SD,FM5216,FM5215,FM7635B,FM7518,FM5011HBB3,FM5011HBB4,FM5330,FM5212,FM5011HBB1,FM5214,XP4302,FM4058H8L,FM5011HBB6,FM5311.,TC3582C,FM5009E,FM4258,FM5009D,SC1117XXXX,FM5011HBA1,FM5011HBA4,FM9689C,T3582B,FM5009B,4056H,FM2542S,FM3608,TC3608H.,FM5011HBD3EL,FM5006B,FM5006F,FM9916,FM2842,FM7318A,FM9688KA,TC2525GBB,FM5332D,FM5401HJ,FM5011HBD2EI,FM2540TS,FM6300M,FM5327,FM34093SMD,FM6300G,FM9921,SC9271,TC6536,TC3582BB,TC4056A.,FM3783KA,FM3783KB,SC34073XX,FM7518B,TC3840,.LTH7R,TC6536GB,FM9919AG,TC6536GA,TC2526,FM9920D,FM7520BLS,TC3582DA,FM6905D,TC3582DB,FM5011HBD1EL,FM7520BL,FM9698B,XPM7105,FM7520BA,SC9271系列,FM8989B,FM9920E,FM3773KD,FM3783HB,FM7520BS,FM5324G,FM5324H,FM3773KB,FM3773KC,FM3783HA,FM3773KA,TC2306,FM5324GA,FM8989M,FM9918MA,FM9692,FM9918MH,FM9918ML

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产品型号	品类	VIN (Min)(V)	VIN (Max)(V)	OVP Threshold(V)	Charge Voltage (V)	SHDN Iq(μA)	Status Indication	Package
SGM4056	Li-Ion Battery Charger	4.55	26.5	6.8, 10.5	4.2	200	Status Indication	SOIC-8(EP) TDFN-3×3-8L TDFN-2×3-8L TDFN-2×2-8