摘要
介绍了通用串行总线(USB)端口电压和电流技术规范;给出了典型的手机锂离子电池恒流恒压(CCCV)充电方案;讨论了基于LTC4062而设计的USB手机充电器电路;解决了未经过枚举过程便从USB端口吸取大电流而导致关闭USB端口的难题。
The voltage and current specification of the Universal Serial Bus （USB） port is introduced. A typical Constant-Current Constant-Votage （CCCV） cell phone battery charger is designed. A cell phone charger circuit based on LTC4062 IC is presented. The problem that the USB port will be cut off when there is a big current consumption and the enumeration process is not exercised is solved.
出处
《电子科技》
2008年第9期33-35,共3页
Electronic Science and Technology
