General Description
The AAT4625 SmartSwitch™ is part of AnalogicTechs Application Specific Power MOSFET™ (ASPM™) product family. It is a 1.0A Current Limited P-channel, MOSFET power switch designed for high-side load-switching applications. This switch operates with inputs ranging from 2.7V to 5.5V, making it ideal for both 3V and 5V systems. An integrated current-limiting circuit protects the input supply against large changes in load current which may cause the supply to fall out of regulation. The AAT4625 is also protected from thermal overload which limits power dissipation and junction temperatures. The current limit threshold is factory programmed at 1.5A, with a maximum of 2.0A. The quiescent supply current is typically a low 16µA. In shutdown mode, the supply current decreases to less than 1µA.

FEATUREs
• Compliant with USB 1.1 and 2.0 specifications
• 2.7V to 5.5V Input voltage range
• 1.0A minimum continuous current
• 2.0A maximum current limit
• 60mΩ typical RDS(ON)
• Low quiescent current
   • Typically 16µA
   • 1µA max with Switch off
• Thermal shutdown
• Fault flag with 10ms blanking
• Undervoltage Lockout
• Temp range -40 to 85°C
• UL Approved—File No. E217765
• 8 pin SOP or TSSOP package

APPLICATIONs
• USB ports and peripherals
• Notebook computers
• Hot swap supplies
• General purpose power switching