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）：