MAX1873数据手册的中文翻译.doc

简单的限流开关模式Li+电池充电控制器--------------------------------------------------------------------------概述低成本的MAX1873R/S/T提供所有功能需要对高达4A或以上的2-,3-或4-系列的锂离子电池进行简单而有效的充电。它提供调节充电电流和电压,少于±%时,总电压在电池端出现错误。在降压的DC-DC配置下,外部P沟道MOSFET有效地为电池充电,这是低成本的设计。MAX1873R/S/T使用两个控制回路调节电池电压和充电电流,一起工作的两个控制回路在电压和电流调节之间顺利转换。一个额外的控制回路限制电流来自输入端,可以使AC适配器尺寸和成本最小化。模拟电压还提供其输出正比于充电电流,以便ADC或微控制器可以监控充电电流。在多化学充电器设计时,MAX1873也可能被用来作一个有效的有限电流源对镍镉或镍氢电池充电。MAX1873R/S/T采用节省空间的16引脚QSOP封装是可用的。使用评估板(MAX1873EVKIT),可以帮助减少设计时间。--------------------------------------------------------------------------应用笔记本电脑便携式网络片2-,3-,或4节锂离子电池充电器6-,9–10节镍电池充电器手持式仪表便携式桌面助理(PDA)台式插座充电器----------------------------------------------------------------------选型指南组成部分串联电池充电MAX1873REEE2节Li+或5-或6芯镍电池MAX1873SEEE3节Li+或7-或9芯镍电池MAX1873TEEE4节Li+10单元镍电池包引脚配置在数据资料的最后。--------------------------------------------------------------------------特征•低成本和简单电路•可对2-,3-,或4节串联锂离子电池充电•AC适配器输入电流限制回路•还可对以镍为主的电池充电•模拟输出监视充电电流•±%的电池调节电压•5μA关断电池电流•输入电压高达28V•200mV的压差电压/100%占空比•可调充电电流•为300kHz的PWM振荡器降低了噪音•采用节省空间的16引脚QSOP•采用MAX1873评估板以加快设计-----------------------------------------------------------------------40°C至85°C16QSOPMAX1873SEEE-40°C至85°C16QSOPMAX1873TEEE-40°C至85°C16QSOP------------------------------------------------------------------典型工作电路极限值CSSP,CSSN,DCIN接GND·······················-,ICHG/EN接GND························-,EXT接DCIN····························-,EXT接GND·······················()-······························6V至-······························30V至-,S,IOUT接GND··············-()BATT,CSB接GND···························-·····························-·····························-··································+50mAVH反向电流································+40mA连续功耗(TA=70℃)16引脚QSOP封装(在70°C以上,/°C···········+667mW工作温度范围MAX1873_EEE·····················-40°C至+85°C结点温度································+150°C存储温度范围