AAT4681 20ohm P-Channel SmartSwitch for UMPC Battery Charging Applications

The AAT4681 SmartSwitch enables separate stand-alone AC adapter and PMU USB chargers to independently control a single low RDS(ON) power MOSFET between battery and system power output. A 20V version is available for multi-cell Li-ion applications and a 6V version is available for single-cell Li-ion applications. The two P-channel power MOSFETs required in UMPC applications for controlling independent charger ICs can be consolidated to a single device, saving space and reducing cost. The single 20mΩ P-channel device in the AAT4681/-1 has four times lower RDS(ON) than the equivalent path resistance formed by two series devices. Ordering options are available for multi-cell and single-cell Li-ion versions. For the single-cell application, a 6V device with dual independent gate control is available. For 2-cell and 3-cell applications a 20V ordinary P-channel device is available in the same package and pin configuration. Both devices are available in the TDFN-10L 3mm x 3mm package.

技术特性
  • Multi-Cell 20V Device and Single-Cell 6V Device
  • Dual Independent Gate Controls
  • Independent Linear Regulator and SMPS Power Switch States are Maintained
  • 3mm x 3mm TDFN-10L package
  • Temperature Range: -40°C to 85°C
订购信息 Ordering Information
  • AAT4681
应用领域 APPLICATION
  • Smart Phones
  • Sub Notebooks
  • Smartbooks
  • Netbooks
  • Ultra-Mobile PCs
  • Wireless Media Devices
功能框图 Functional Block Diagram

AAT4681 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
AAT4681 数据资料DataSheet下载:pdf Rev.V2 2 页