AAT3681 USB Port or AC Adapter Li-Ion/Polymer Battery Charger

The AAT3681 BatteryManager is an integrated single cell lithium-ion/polymer battery charger IC, designed to operate from a DC power source or USB port up to an input voltage of 7.5V. It requires just one external component. The AAT3681 precisely regulates battery charge voltage and current for 4.2V (4.375V option) lithium-ion/polymer battery cells. When charged from an AC adapter or USB port, the battery charging current can be set by an external resistor up to 300mA. Battery charge state is continuously monitored for fault conditions. In the event of an over-voltage, short-circuit, or over-temperature failure, the device will automatically shut down, thus protecting the charging device, control system, and the battery under charge. A status monitor output pin is provided to indicate the battery charge status by directly driving an external LED. The AAT3681 is available in a Pb-free, thermally enhanced, space-saving 8-pin 2.0 × 2.1mm SC70JW package and is specified for operation over the -40°C to +85°C temperature range.

技术特性
  • USB or AC Adapter System Power Charger
  • Programmable from 15mA to 300mA
  • 4.0V ~ 7.5V Input Voltage Range
  • High Level of Integration with Internal:
  • Charging Device
  • Reverse Blocking Diode
  • Automatic Current Sensing
  • Automatic Recharge Sequencing
  • Full Battery Charge Auto Turn Off/Sleep Mode/Charge
    Termination
  • Shutdown Current <1μA
  • Automatic Trickle Charge for Battery Pre-Conditioning
    (AAT3681-1 is No Trickle Charge Option)
  • Over-Voltage and Emergency Thermal Protection
  • Power On Reset and Soft Start
  • LED Status Pin
  • 8-Pin 2.0 × 2.1mm SC70JW Package
订购信息 Ordering Information
  • AAT3681
应用领域 APPLICATION
  • Bluetooth® Headsets
  • DECT Headsets
  • Digital Still Cameras
  • MP3, Portable Music, and Portable Media Players
  • Personal Data Assistants (PDAs)
  • Wrist Watches
  • Other Lithium-Ion/Polymer Battery-Powered Devices
功能框图 Functional Block Diagram

AAT3681 功能框图

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
AAT3681 数据资料DataSheet下载:pdf Rev.V2 2 页