AAT3682 Li-Ion/Polymer Linear Battery Charger

The AAT3682 is a lithium-ion/polymer linear battery charger. It is designed for compact portable applications with a single-cell battery. The AAT3682 precisely regulates battery charge voltage and charge current, and offers an integrated pass device, minimizing the number of external components required. The AAT3682 charges the battery in three different phases: preconditioning, constant current, and constant voltage. In preconditioning mode, the charge current has two different levels and is controlled by one external pin. Battery charge temperature and charge state are carefully monitored for fault conditions. A battery charge stable monitor output pin is provided to indicate the battery charge status through a display LED or interface to a system controller. The AAT3682 has a sleep mode option for when the input supply is removed. In this mode, it draws only 2.0μA of typical current. The AAT3682 is available in a Pb-free, 16-pin QFN44 package and is specified over the -20°C to +70°C temperature range.

技术特性

VIN Range: 4.7V to 6.0V
Low Quiescent Current, Typically 0.5mA
1% Accurate Preset Voltage
Up to 1A of Charging Current
Integrated Pass Device
Battery Temperature Monitoring
Fast Trickle Charge Option
Deep Discharge Cell Conditioning
LED Charge Status Output or System Microcontroller
Serial Interface
Power-On Reset
Lower Power Sleep Mode
Status Outputs for LED or System Interface Indicates
Charge and Fault Conditions
Temperature Range: -20°C to +70°C
16-Pin QFN44 Package

订购信息 Ordering Information

AAT3682

应用领域 APPLICATION

Cellular Telephones
Digital Still Cameras
Hand-Held PCs
MP3 Players
Personal Data Assistants (PDAs)

功能框图 Functional Block Diagram

应用技术支持与电子电路设计开发资源下载	版本信息	大小
AAT3682 数据资料DataSheet下载:pdf	Rev.V2	2 页