The cxlb7360 is a chip that can charge a variety of batteries. It can charge a single lithium battery, a single lithium iron phosphate battery or two to four NiMH batteries. The inner part of the device includes a power transistor, and no external current detection resistor and resistance diode are needed in application. Cxlb7360 only needs a few peripheral components, and conforms to the USB bus technical specifications, which is very suitable for portable products. The thermal modulation circuit can control the chip temperature in a safe range when the power consumption of the device is large or the ambient temperature is high. A high-precision voltage comparator is integrated in the chip, with an accuracy of 1%, which can accurately set the constant current charging termination voltage. The internal 8-bit analog-to-digital conversion circuit can automatically adjust the charging current according to the current output capacity of the input voltage source. The user does not need to consider the worst case, and can maximize the current output capacity of the input voltage source, which is very suitable for the battery charging application powered by the voltage source with limited current output capacity such as solar panel. The cxlb7360 charging current can be set through an external resistor. When the input voltage is powered off, the cxlb7360 automatically enters the sleep mode of low power consumption, and the current consumption of the battery is less than 3 microamps. Other functions include low input voltage latch, trickle charging, automatic recharging, battery temperature monitoring and status indication
-
"
|
可用太阳能板供电的多种电池充电器芯片CXLB7360 |
||||
|
产品简介 规格书下载 免费样品申请 |
||||
|
概述： |
||||
|
|
||||
|
CXLB7360是可以对多种电池进行充电控制的芯片，可以对单节锂电池，单节磷酸铁锂电池或两节到四节镍氢电池充电。该器件内部包括功率晶体管,应用时不需要外部的电流检测电阻和阻流二极管。CXLB7360只需要极少的外围元器件,并且符合USB总线技术规范，非常适用于便携式产品。热调制电路可以在器件的功耗比较大或者环境温度比较高的时候将芯片温度控制在安全范围内。芯片内部集成有高精度电压比较器，精度达1%，可以精确设置恒流充电终止电压。内部的8位模拟-数字转换电路，能够根据输入电压源的电流输出能力自动调整充电电流，用户不需要考虑最坏情况，可最大限度地利用输入电压源的电流输出能力，非常适合利用太阳能板等电流输出能力有限的电压源供电的电池充电应用。CXLB7360充电电流可以通过一个外部电阻设置。当输入电压掉电时，CXLB7360自动进入低功耗的睡眠模式，此时电池的电流消耗小于3微安。其它功能包括输入电压过低锁存，电池低电压时涓流充电,自动再充电，电池温度监控以及状态指示等功能 |
||||
|
应用： |
||||
|
|
||||
|
|
移动电话 |
|
数码相机 |
|
|
|
电子词典 |
|
便携式设备 |
|
|
|
需要对锂电池,镍氢电池,磷酸铁锂电池和铅酸电池充电的应用 |
|||
|
特点： |
||||
|
|
||||
|
|
可以用USB接口或交流适配器对电池充电 |
|||
|
|
片内功率晶体管 |
|||
|
|
恒流充电终止电压精度 1% |
|||
|
|
内部集成有8位模拟-数字转换电路，能够根据输入电压源的电流输出能力自动调整充电电流 |
|||
|
|
可利用太阳能板等输出电流能力有限的电压源为电池充电 |
|||
|
|
在电池电压较低时采用小电流预充电模式 |
|||
|
|
用户可设置的持续充电电流达 600mA |
|||
|
|
采用恒流/恒温模式充电，既可以使充电电流最大化，又可以防止芯片过热 |
|||
|
|
电源电压掉电时自动进入低功耗的睡眠模式 |
|||
|
|
状态指示输出可驱动LED或与单片机接口 |
|||
|
|
自动再充电 |
|||
|
|
电池温度监测功能 |
|||
|
|
封装形式SOP8 |
|||
|
|
无铅产品 |
|||
|
产品封装图：
|
|||
|
|
太阳能充电电池充电芯片选型指南：
|
型号 |
电池种类/串联数量 |
工作模式 |
最高输入电压 |
最大持续充电电流 |
充电结束判断 |
封装 |
|
铅酸电池/12V |
开关模式 |
+30V |
4A |
浮充 |
SSOP10 |
|
|
磷酸铁锂电池/1 |
开关模式 |
28V |
4A |
最小充电电流 |
SSOP10 |
|
|
锂电池/1 |
开关模式 |
28V |
4A |
最小充电电流 |
SSOP10 |
|
|
锂电池/1 |
线性模式 |
+6V |
600mA |
最小充电电流 |
SOP8 |
|
|
锂电池/1 |
线性模式 |
+6V |
1A |
最小充电电流 |
DFN8 |
|
|
多种电池 |
线性模式 |
+6V |
600mA |
恒流充电终止电压 |
SOP8 |
|
|
锂电池、磷酸铁锂电池/多节 |
开关模式 |
+28V |
5A |
最小充电电流 可外部设置 |
TSSOP16 |
