锂电池线性充电管理芯片LTC4054及其应用

Linear - charging management chip LTC4054 of lithium battery and its application

本文介绍凌特公司的最新锂电池充电芯片LTC4054,介绍了该芯片的特性、功能以及应用过程中的注意事项.利用LTC4054充电芯片及非常简单的几个外围元件可设计成本非常低的单节锂电池充电器,由于其超小型的封装,非常适合于便携式电子设备的小型化设计.该芯片还能从USB端口取电工作,无须外接电源,特别适合用于电脑的周边设备中,如MP3、PDA掌上电脑等.本文给出了使用LTC4054设计的典型充电电路.

An introduction was made to charging chip LTC4054, its properties, functions and operation procedures of brand - new lithium battery of Lingte Company. Single lithium battery charger could be designed at very low cost by using charging chip LTC4054 and several simple peripheral components. Because of its sub-miniature, it was fit for the design of portable electronic equipment. The chip could work through electricity from USB ports without external electricity supply, so it was suitable for peripheral equipment of computers such as MP3 and PDA palmtop computers. Typical charging circuit of LTC4054 chip was also introduced.