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首页 > Products > Battery Charging Chip > Mobile Power Chip > Mobile Power Management Chip >Cxlb7479 cxlb7479a complete single lithium-ion battery with constant current/constant voltage linear charger heat sink at the bottom and the small number
Cxlb7479 cxlb7479a complete single lithium-ion battery with constant current/constant voltage linear charger heat sink at the bottom and the small number

Cxlb7479 cxlb7479a is a complete single lithium-ion battery with constant current / constant voltage linear charger. The sop8 / DIP8 package with heat sink at the bottom and the small number of external components make the cxlb7479 cxlb7479a an ideal choice for portable applications. Cxlb7479 cxlb7479a can work with USB power and adapter power. Because of the internal PMOSFET structure and anti reverse charging circuit, no external isolation diode is needed. Thermal feedback can adjust the charging current automatically, so as to limit the chip temperature under high power operation or high ambient temperature conditions. The charging voltage is fixed at 4.2V, and the charging current can be set externally through a resistor. The cxlb7479 cxlb7479a will automatically terminate the charging cycle when the charging current drops to 1 / 10 of the set value after the final floating charge voltage is reached. When the input voltage (AC adapter or USB power supply is removed, cxlb7479 cxlb7479a automatically enters a low current state, reducing the battery leakage current to less than 2ua. Cxlb7479 cxlb7479a can also be put into shutdown mode when there is power supply, so as to reduce the power supply current to 55ua. Other features of the cxlb7479 include battery temperature detection, undervoltage blocking, and automatic recharging.

Cxlb7479 cxlb7479a complete single lithium-ion battery with constant current/constant voltage linear charger heat sink at the bottom and the small number
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   产品概述 返回TOPLwW嘉泰姆


        CXLB7479  CXLB7479A是一款完整的单节锂离子电池采用恒定 电流 /恒定电压线性充 电器。其底 部带有散热片的SOP8/DIP8封装与较少的外部元件数目使得CXLB7479  CXLB7479A成为便携式应用的理想选择。CXLB7479  CXLB7479A可以适合USB电源和适配器电源工作。由于采用了内部 PMOSFET架构,加上防倒充电路,所以不需要外部隔离二极管。热反馈可对充电电流进行自动调节,以便在大功率操作或高环境温度条件下对芯片温度加以限制。充电电压固定于4.2V,而充电电流可通过一个电阻器进行外部设置。当充电电流在达到最终浮充电压之后降至设定值 1/10时,CXLB7479  CXLB7479A将自动终止充循环。当输入电压(交流适配器或USB电源被拿掉时,CXLB7479  CXLB7479A自动进入一个低电流状态,将电池漏电流降至2uA以下。CXLB7479  CXLB7479A在有电源时也可置于停机模式,以而将供电电流降至 55uA。CXLB7479  CXLB7479A的其他特点包括电池温度检测、欠压闭锁、自动再充电。LwW嘉泰姆

   产品特点 返回TOPLwW嘉泰姆


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高达1000mA的可编程充电电流LwW嘉泰姆

无需MOSFET、检测电阻器或隔离二极管LwW嘉泰姆

用于单节锂离子电池、采用SOP封装的完整线性充电器LwW嘉泰姆

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LwW嘉泰姆

精度达到±1.5%的4.2V预设充电电压LwW嘉泰姆

用于电池电量检测的充电电流监控器输出LwW嘉泰姆

自动再充电LwW嘉泰姆

C/10充电终止LwW嘉泰姆

待机模式下的供电电流为 55uALwW嘉泰姆

2.9V涓流充电器件版本LwW嘉泰姆

软启动限制了浪涌电流LwW嘉泰姆

电池温度监测功能LwW嘉泰姆

采用8引脚封装(ESOP-8,DIP-8)LwW嘉泰姆

   应用范围 返回TOPLwW嘉泰姆


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