AAT4601A

• 2.7V to 5.5V Input voltage range
• Programmable over current threshold
• Low quiescent current
• 12A typical
• Less than 1A with Switch off
• Only 2.5V needed for ON Control
• Thermal Shutdown
• Fault Flag
• 2ms Fault Blanking
• Undervoltage Lockout
• Temperature range -40 to 85°C
• 2kV ESD rating
• UL Approved-File No. E217765
• 8-pin SOP, TSSOP, or MSOP package

• USB ports
• Notebook computers
• Peripheral ports
• Hot swap supplies

The AAT4601A SmartSwitch™ is part of AnalogicTech™'s Application Specific Power MOSFET™ (ASPM™) product family. It is a 1.8A 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 could cause the supply to fall out of regulation. The AAT4601A has protection from thermal overload which limits power dissipation and junction temperatures. The maximum current limit level will guarantee 1.8A can be delivered to the load; the actual threshold is programmed with a resistor from the SET pin to ground. The quiescent supply current is typically 12A. In shutdown mode, the supply current decreases to less than 1A.

The AAT4601A is available in 8-pin SOP, TSSOP, or MSOP specified over -40 to 85°C.