The AAT4250 SmartSwitchTM is a member of AATI's Application Specific Power MOSFETTM (ASPMTM) product family. It is a Slew Rate Controlled P-channel MOSFET power switch designed for high-side load-switching applications. This switch operates with an input voltage range from 1.8V to 5.5V, making it ideal for 2.5V, 3.3V or 5V systems. The part features 1.5ms turn on and 10s turn off time. The AAT4250 has an under voltage lock out which turns off the switch when an under-voltage condition exists. Input logic levels are TTL compatible. The quiescent supply current is very low, typically 2A. In shutdown mode, the supply current is typically reduced to 0.1A or less.