Cxlb7322 is a perfect single-chip lithium-ion battery constant current / constant voltage linear power management chip. Its SOP / MSOP package and few peripheral components are very suitable for portable products, and cxlb7322 is specially designed for USB power supply specifications. Based on the internal MOSFET structure, there is no need for external induction resistance and blocking diode. When the external environment temperature is too high or working at high power, the thermal feedback can adjust the charging current to reduce the chip temperature. The charging voltage is limited to 4.2V, and the charging current can be adjusted by external resistance. When the charging current drops to 1 / 10 of the set value after reaching the predetermined charging voltage, the cxlb7322 automatically ends the charging process. When the input terminal (adapter or USB power supply) is unplugged, the cxlb7322 will automatically enter the low current state, and the battery leakage current will drop below 2 μ a. The cxlb7322 can also be set to stop working to reduce the power supply current to 50 μ a
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产品概述 返回TOP
CXLB7322是一个完善的单片锂离子电池恒流/恒压线性电源管理芯片，其SOP/MSOP封装和极少的外围元 件非常适合应用于便携式产品，而且CXLB7322专门设计适用于USB的供电规格。基于内部MOSFET结构， 不需要外部感应电阻和阻塞二极管，当外部环境温度过高或在大功率工作时，热反馈可以调节充电电流 以降低芯片温度。充电电压被限定在4.2V，充电电流可通过外部电阻调整。在达到预定充电电压后，充 电电流降低到设定值的1/10时，CXLB7322自动结束充电过程。当输入端(适配器或USB电源)拔掉后， CXLB7322自动进入低电流状态，电池漏电流将降到2μA以下。CXLB7322还可被设置于停止工作状态，使电 源电流降到50μA。其余特性包括：电池温度监测，欠压锁闭，自动再充电和两个状态引脚以显示充电和 充电终止。
产品特点 返回TOP
?高达1000mA的可编程充电电流
?不需外接MOSFET，传感电阻和阻塞二极管
?用于单节锂离子电池、采用SOP/MSOP封装的完整线性充电器
?恒定电流/恒定电压操作，并具有可在无过热危险的情况 下实现充电速率最大 化的热调节功能
?直接从USB接口管理单节锂离子电池充电
?预设充电电压4.2V±1%
?用于电池电量检测的充电电流监控器输出
?自动重新充电
?充电状态双输出、无电池和故障状态显示
?1/10充电电流终止充电
?停止工作状态电流50uA
?2.9V涓流充电阀值电压
?软启动限制浪涌流
?电池温度检测功能
?采用8引脚SOP8-PP封装和MSOP8-PP封装
应用范围 返回TOP
?手机、平板电脑
?充电器
? 数码相机
?电子词典
?蓝牙、GPS导航仪
技术规格书（产品PDF) 返回TOP
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产品封装图 返回TOP
电路原理图 返回TOP
相关芯片选择指南 返回TOP
| Battery Charger | ||||||||
| Product | Character | Operating Voltage | Output Voltage | Quiescent Iq | Iq in Shutdown | Output Current | Ibattery Radio | Package |
| CXLB7321 | Line Constant Current/Voltage | 4.25~6.5V | 4.2V | 350μA | 30μA | 500mA | 1000 | SOT23-5L |
| CXLB7322 | Line Constant Current/Voltage | 4.25~6.5V | 4.2V | 350μA | 50μA | 800mA | 1000 | SOP8-PP MSOP8-PP |
| CXLB7323 | Line Constant Current/Voltage | 4.25~6.5V | 4.2V | 350μA | 50μA | 1000mA | 1000 | SOP8-PP |
| CXLB7324 | Line Constant Current/Voltage | 4.25～6.5V | 4.35V | 350μA | 50μA | 1000mA | 1000 | SOP8-PP |
| CXLB7325 | 500KHz 2A Synchronous PWM | 4.25~6.5V | 4.2V | 1.5mA | 20μA (Sleep Mode) | 2000mA | - | SOP8-PP |
