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首页 > Products > Battery Charging Chip > Lithium Charging Chip > Dual Lithium Battery Charging Chip >Cxlb7282 lithium battery charging control chip with trickle constant current and constant voltage charging modes charge single (4.2V/4.34v) lithium battery or double(8.4v/8.7v)lithium batteries
Cxlb7282 lithium battery charging control chip with trickle constant current and constant voltage charging modes charge single (4.2V/4.34v) lithium battery or double(8.4v/8.7v)lithium batteries

Cxlb7282 is a lithium battery charging control chip with trickle, constant current and constant voltage charging modes, which can charge single (4.2V / 4.34v) lithium battery or double (8.4v / 8.7v) lithium batteries rapidly and efficiently. The cxlb7282 has a wide range of input power supply. Working at the switch frequency of 450kHZ, it adopts the current mode PWM step-down switch structure, which provides a micro, simple and efficient solution for the fast charging of lithium battery.
The charging current of cxlb7282 is set by the external sense resistor, and the current accuracy is within ?10%; the floating charging voltage of each battery is set at 4.2v/4.34v by the partial voltage resistor and precise reference voltage, and the accuracy is up to ?1%. There are timer to set trickle charging time and current mode charging time. After charging, if the battery voltage drops to 4.05v, the controller will recharge the battery automatically. When the input power is removed, the chip automatically enters the sleep mode. The chip has real-time detection function for battery temperature and self recovery function

Cxlb7282 lithium battery charging control chip with trickle constant current and constant voltage charging modes charge single (4.2V/4.34v) lithium battery or double(8.4v/8.7v)lithium batteries
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   产品概述 返回TOPwdu嘉泰姆


            CXLB7282是一款具有涓流,恒流,恒压充电模式的锂 电池充电控制芯片,可以分别给单节(4.2V/4.34V)锂电 池或双节(8.4V/8.7V)锂电池进行快速高效地充电。CXLB7282具备较宽的输入电源范围,工作在 450KHz 的开 关频率下,采用电流模式 PWM 降压型开关结构,为锂电 池快速充电提供了微型、简单且高效的解决方案。 

         CXLB7282由外部 Sense 电阻设定充电电流的大小, 电流精度达到±10%以内;内部由分压电阻和精准的参考 电压将每节电池的浮充电压设定在 4.2V/4.34V 同时具有 高达±1%的精度。内部含有定时器设定涓流充电时间和电 流模式充电时间。当充电结束后,如果电池电压降到单节 4.05V 后,控制器自动重新对电池进行充电。当输入电源 去掉之后,芯片自动进入休眠模式。芯片有对电池温度进 行实时检测功能,具备自恢复功能。

   产品特点 返回TOPwdu嘉泰姆


● 宽范围电源电压:wdu嘉泰姆

 4.7V~20V-4.2V版或4.34V版 wdu嘉泰姆

 8.9V~20V-8.4V版或8.7V版 wdu嘉泰姆

● 高效电流模式PWM控制结构450KHz开关频率wdu嘉泰姆

● 高达2A的充电电流wdu嘉泰姆

● 充电结束时电流检测输出wdu嘉泰姆

● 3小时充电终止定时器wdu嘉泰姆

● ±1% 的充电电压精度 wdu嘉泰姆

● ±10% 的充电电流精度 wdu嘉泰姆

● 防倒灌电流低至10μA wdu嘉泰姆

● 自动给电池再充电wdu嘉泰姆

● 电池电压较低时自动进入涓流充电模式 wdu嘉泰姆

● 输入电源去除自动进入休眠模式 wdu嘉泰姆

● 电池温度检测 wdu嘉泰姆

● 采用低ESR的陶瓷电容输出稳定wdu嘉泰姆

● 8-pin SOP8wdu嘉泰姆

   应用范围 返回TOPwdu嘉泰姆


● 便携式笔记本电脑  wdu嘉泰姆

● 便携式DVD wdu嘉泰姆

● 手持设备wdu嘉泰姆

   技术规格书(产品PDF) 返回TOP wdu嘉泰姆


     需要详细的PDF规格书请扫一扫微信联系我们,还可以获得免费样品以及技术支持wdu嘉泰姆

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产品封装图 返回TOPwdu嘉泰姆


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电路原理图 返回TOPwdu嘉泰姆

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外置MOS 2节锂电充电IC
型号 电池数量 工作模式 工作电压 最大充电电流 工作电流 恒流恒压精度 输出电压 开关频率 封装
CXLB7280 两节 线性,外置MOS 9V-18V 扩流1.5A 0.25mA 1% 8.4V   SOP-8L
CXLB7281 两节 线性,外置MOS 9V-12V 扩流3A 1mA 1% 8.4V   SOP-8L
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CXLB7285 两节 开关式外置MOS 7.5V-28V  扩流5A 1.55mA 1% 8.4V 300KHz TSSOP16
CXLB7285B 两节 开关式外置MOS 6.6V-30V 扩流4A 1mA 1% 8.4V 300KHz SSOP10