深圳市裕亨科技有限公司

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0755-25919951
产品详情
JZ4054 
产品详情

JZ4054 is a complete constant-current & constant voltage linear charger for single cell lithium-ion and Lithium-Polymer batteries.   Its SOT-23 package and low external component count make JZ4054 ideally suited for portable applications.   Furthermore, the JZ4054 is specifically designed to work within USB power specification.   At the same time, JZ4054 can also be used in the standalone lithium-ion and Lithium-polymer battery charger.
No external sense resistor is needed, and no blocking diode is required due to the internal MOSFET architecture.   Thermal feedback regulates the charge current to limit the die temperature during high power operation or high ambient temperature.   The charge voltage is fixed at 4.2V, and the charge current can be programmed externally with a single resistor.   The JZ4054 automatically terminates the charge cycle when the charge current drops to 1/10th the programmed value after the final float voltage is reached.
When the input supply (wall adapter or USB supply) is removed, the JZ4054 automatically enters a low current stage, dropping the battery drain current to less than 2uA.   The JZ4054 can be put into shutdown mode, reducing the supply current to 25uA.
Other features include charge current monitor, undervoltage lockout, automatic recharge and a status pin to indicate charge termination and the presence of an input voltage.



JZ4054是一款用于单节锂离子和锂聚合物电池的完整恒流和恒压线性充电器。JZ4054的SOT-23封装和较少的外部组件数量使其非常适合便携式应用。此外,JZ4054专为在USB电源规范内工作而设计。同时,JZ4054也可用于独立的锂离子和锂聚合物电池充电器。
由于采用内部MOSFET架构,因此不需要外部检测电阻,也不需要隔离二极管。热反馈调节充电电流以限制大功率工作或高环境温度下的芯片温度。充电电压固定为4.2V,可通过单个电阻在外部编程充电电流。当达到最终浮动电压后,充电电流降至编程值的1/10时,JZ4054自动终止充电周期。
卸下输入电源(壁式适配器或USB电源)后,JZ4054自动进入低电流阶段,使电池的漏电流降至2uA以下。JZ4054可以进入关断模式,从而将电源电流降至25uA。
其他功能包括充电电流监控器,欠压锁定,自动充电和状态引脚,用于指示充电终止和输入电压的存在。

联系电话:0755-25919951 手机号码:13714215119 联系邮箱:13714215119@139.com

公司地址:深圳市光明区光明街道东周社区双明大道315号易方大厦12B15
公司地址:深圳市光明区光明街道东周社区双明大道315号易方大厦12B15