EUP8020X-1A AC/USB双电源输入单节锂离子/锂聚合物电池充电管理IC  DataSheet
概述
EUP8020X系列是高集成锂离子(Li-Ion)和锂聚合物(Li-Pol)电池线性充电电源管理组件。EUP8020X可接受AC与USB两种电源输入，自动选择USB端或AC适配器作为系统的电压来源。在USB充电组态，外部控制可以预先设定充电电流为500mA或100mA。在AC充电组态，利用外部电阻来设定充电电流大小，电流可高达1A。
EUP8020X充电有三个区段，包含涓流充电，恒流与恒压充电。充电结束有两种控制方式：最小电流充电终止以及内部计数器计数充电终止。假如电池电压下降至再充电门限值以下，EUP8020X自动重新开始充电。当两个电源均移除后，EUP8020X自动进入休眠模式。充电时无须外接MOSFET、电流检测电阻和隔离二极管。
EUP8020X将功率FET，电流检测电阻，充电状态，反相电流保护集成于芯片中。
特点
• 自动选择AC适配器或USB电源，为单节锂离子或锂聚合物电池充电
• 集成功率FET和电流感测，由AC适配器提供产生高达1A的充电电流
• 集成USB充电控制，可选100mA/500mA充电电流
• 含安全时间计数的预充电状态
• AC电源存在时电源好状态输出
• 充电前和充电过程电池温度检测
• 低功耗自动休眠模式
• 3mm x 3mm TDFN-10封装
• 符合RoHS规范及Pb-Free
应用
• 智能电话
• 数码相机
• PDA/MP3播放器
• 网络家电
EUP8020X-Dual Source AC/USB Li-Ion/Polymer Charger IC for Portable Applications
Description
The EUP8020X series are highly integrated single cell Li-Ion/Polymer battery charger IC designed for handheld devices. The EUP8020X accepts two power inputs, normally one from a USB port and another one from AC-adaptor. The EUP8020X automatically s the USB-Port or the AC-adapter as the power source for the system. In the USB configuration, the host can from the two preset charge rates of 100 mA and 500 mA. In the AC-adapter configuration an external resistor sets the magnitude of the charge current, which may be programmed up to 1A.
The EUP8020X charges the battery in three phases: conditioning, constant current, and constant voltage. Charge is terminated based on minimum current. An internal charge timer provides a backup safety for charge termination. The EUP8020X automatically re-starts the charge if the battery voltage falls below an internal threshold. The EUP8020X also automatically enters sleep mode when both supplies are removed. No external sense resistor or blocking diode is required for charging.
The EUP8020X integrates internal power FET, current sensor, charge status and reverse current protection in a single monolithic devices.
Feature
• Charges Single Cell Li-Ion/Polymer from Either AC Adapter or
USB With Autonomous Power-Source ion
• Integrated Power FET and Current Sensor for Up to 1A Charge Applications From AC Adapter
• Integrated USB Control With able 100 mA and 500 mA Charge Rates
• Precharge Conditioning With Safety Timer
• Power Good (AC Adapter Present) Status Output
• Optional Battery Temperature Monitoring Before and During Charge
• Automatic Sleep Mode for Low-Power Consumption
• Available in TDFN-10 Package
• RoHS Compliant and 100% Lead (Pb)-Free
Application
• Smartphones
• Digital Cameras
• PDAs/ MP3 Players
• Other Battery-Powered Devices
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