【EUP8207-84DIR1】_EUP8207-84DIR1电路_EUP8207-84DIR1封装_EUP8207-84DIR1功能
EUP8207-84DIR1
EUP8207-84DIR1裕鼎祥咨询电话:139 2843 4054

EUP8207 概述
EUP8207是一款使用电流模式PWM操作降压交换式架构的恒定电流,恒定电压的锂离子电池充电器,其工作频率为恒定的500kHz。可提供单节(4.2V)或双节(8.4AV)锂离子电池充电。
它设定包含涓流,恒流与恒压三个阶段充电,使用外部侦测电阻进行±10%精度的充电电流调节,其内部使用分压电路与精准的参考电压进行每节电池4.2V±1%精度的充电终止电压控制。 内部比较电路进行充电终止条件检测,当充电电流小于EOC(end-of-charge)或者内部定时器计时终止都将停止充电循环。EUP8207将检测单节电池电压是否小于4.05V来判断是否自动重置充电循环。当直流输入电源移除时,EUP8207自动进入休眠模式以减少电池端的供电电流。
EUP8207提供SOP-8与TDFN-10封装。 

EUP8207 特点
•  宽输入电压范围: 
    4.8V to 20V–4.2 Version
    8.9V to 20V–8.4 Version
    8.9V to 20V–8.4A Version
•  固定500kHz开关频率
•  充电电流终止指示输出
•  七小时的安全充电止计时
•  ±1%恒压充电精度
•  ±10%恒流充电精度
•  低于10uA的电池反相供电电流
•  电池低电压涓流充电
•  自动电池重置充电
•  低功耗休眠模式
•  电池温度检测
•  提供SOP-8与TDFN-10封装
•  符合RoHS规范及Pb-Free 

EUP8207 应用
•  小型笔记型计算机
•  可携式DVD播放器
•  掌上型设备

EUP8207 DESCRIPTION
The EUP8207 is a constant current, constant voltage Li-Ion battery charger controller that uses a current mode PWM step-down (buck) switching architecture. With a 500kHz switching frequency, the EUP8207 provides a small, simple and efficient solution to fast charge one (4.2V) or two (8.4V) cell lithium-ion batteries.
The EUP8207 charges the battery in three phases: conditioning, constant current, and constant voltage. An external sense resistor sets the charge current with ± 10%
accuracy. An internal resistor divider and precision reference set the final float voltage to 4.2V per cell with ±1% accuracy. An internal comparator detects the near
end-of-charge condition while an internal timer sets the total charge time and terminates the charge cycle. The EUP8207 automatically re-starts the charge if the battery
voltage falls below an internal threshold, 4.05V per cell.The EUP8207 also automatically enters sleep mode when DC supplies are removed. The EUP8207 is available in the 8-lead SOP and 10-lead TDFN packages.

 

EUP8207 FEATURES 
 ·  Wide Input Supply Voltage Range:
     4.7V to 20V – 4.2 Version 8.9V to 20V – 8.4A Version
 ·500kHz Switching Frequency
 ·End-of-Charge Current Detection Output
 ·7 Hour Charge Termination Timer
 ·± 1% Charge Voltage Accuracy
 ·± 10% Charge Current Accuracy
 ·Low 10µA Reverse Battery Drain Current
 ·Automatic Battery Recharge
 ·Automatic Trickle Charging of Low Voltage Batteries
 ·Automatic Sleep Mode for Low Power Consumption
 ·Battery Temperature Sensing 
 ·Stable with Ceramic Output Capacitor
 ·8-Lead SOP and 10-Lead TDFN Packages
 ·RoHS Compliant and 100% Lead (Pb)-Free

 


EUP8207 APPLICATIONS 
 ·Small Notebook Computer
 ·Portable DVD
 ·Handheld Instruments

 


用邮件咨询EUP8207-84DIR1的相关信息 就EUP8207-84DIR1咨询裕鼎祥科技客服,也可电话至13928434054。
裕鼎祥代理销售EUP8207-84DIR1
新市场拓展部24小时全球服务热线:139 2843 4054
订单状态查询电话:0755-33654730
传真:0755-86250626
投诉电话:13928434054
邮箱:sales@ydxtek.com
网址:www.ydxtek.com
地址:深圳市宝安区西乡街道庄边社区雍和园1栋B座1703

裕鼎祥致力于提供完毕可靠的电源解决方案
公司产品线包含 LED背光驱动IC锂电池充电IC
升压转换器BOOST DC/DC降压转换器
LDO稳压器件等电源IC,主要应用于各种手持式消费
电子产品如PMP、GPS、MID、数码相机以及迷你音箱等。