General Description
The AAT4626 SmartSwitch is part of AnalogicTechs Application Specific Power MOSFET™ (ASPM™) product family. It is a dual-channel 500mA currentlimited 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 AAT4626 is also protected from thermal overload which limits power dissipation and junction temperatures. The current limit threshold is factory programmed at 1.0A, with a maximum of 1.5A. The quiescent supply current is typically a low 20µA. In shutdown mode, the supply current decreases to less than 1µA.

FEATUREs
• 2.7V to 5.5V Input Voltage Range
• Compliant to USB 1.1 and 2.0 Specifications
• 500mA (Min) Continuous Current per Channel
• 1.25A (Max) Current Limit per Channel
• 90mΩ Typical RDS(ON)
• Low Quiescent Current:
   — Typically 20µA
   — 1µA Max with Switches Off
• Thermal Shutdown
• Slew Rate Limited Turn On
• Fault Flag with 2ms Blanking
• Under-Voltage Lockout
• Temperature Range: -40°C to +85°C
• UL Approved—File No. E217765
• 8-Pin SOP or TSSOP Package

APPLICATIONs
• General-Purpose Power Switching
• Hot Swap Supplies
• Notebook Computers
• USB Ports and Peripherals