本文介绍了AAT3698-1/-2主要特性，功能方框图，典型应用电路以及AAT3698-1/-2评估板电路图和评估板材料清单（BOM）。AnalogicTech公司的 AAT3698-1/-2 BatteryManager™是单节锂离子/锂聚合物电池线性充电器，输入电源为USB端口，或输入电压高达7.0V的AC适配器。为安全起见，AAT3698- 1/-2还包括高达28V的过压保护。LDO输出5V/50mA，可编程快速充电电流从50mA到1.6A，主要用在蓝牙手机，耳机及配件，数码相机，手机，PDA，MP3播放器等。
AAT3698-1/-2主要特性：
• USB or AC Adapter System Power Charger
• 3.0V ~ 7.0V Input Voltage Range
• Fast Over-Voltage Protection Turn Off
• OVP Trip Threshold: 7.25V (typ)
• High Level of Integration with Internal:
▪ Power Device
▪ Reverse Current Blocking
▪ Current Sensing
• 5V/50mA LDO Output
• Programmable Fast Charge Current from 50mA to 1.6A
• Programmable Charge Termination Current
• Charge Status Indicator
• Power OK Indicator
• Battery Absence Detection Input Pin
• Automatic Termination and Recharge Sequencing (AAT3698-1 Only)
• Automatic Trickle Charge For Battery Pre-Conditioning
• Emergency Thermal Shutdown Protection
• Digitally Controlled Thermal Loop Regulation
• Active Low Enable with Internal 200kΩ Pull-Down Resistor
• Output for Auto-Booting
• 14-pin 3x3mm TDFN Package
AAT3698-1/-2应用：
• Bluetooth™ Headsets, Headphones, Accessories
• Digital Still Cameras
• Mobile Telephones
• Personal Data Assistants (PDAs)
• MP3 Players
• Other Lithium-Ion/Polymer Battery-Powered Devices
图1。AAT3698-1/-2功能方框图
图2。AAT3698-1/-2典型应用电路图
图3。AAT3698-1/-2评估板电路图
AAT3698-1/-2评估板材料清单（BOM）：
