General Description
The AAT3223 PowerLinear NanoPower low dropout (LDO) linear regulator is ideal for portable applications where extended battery life is critical. This device features extremely low quiescent current, typically 1.1µA. Dropout voltage is also very low, typically 190mV at 100mA. The AAT3223 has an enable pin which, when pulled low, will put the LDO regulator into shutdown mode, removing power from its load and offering extended power conservation capabilities for portable battery-powered applications. The AAT3223 also has a PowerOK (POK) feature which monitors the LDO output voltage and will alert the system if the output falls out of regulation.

Features
• 1.1µA Quiescent Current
• 250mA Output Current
• Low Dropout: 190mV (typical)
• High Accuracy: ±2%
• Current Limit Protection
• Over-Temperature Protection
• Extremely Low Power Shutdown Mode
• Low Temperature Coefficient
• Stable Operation With Virtually Any Output Capacitor Type
• Power-OK Signal Output
• Active High Enable Pin
• 4kV ESD
• Factory-Programmed Output Voltages
• 6-pin SOT23 Package

Applications
• Cellular Phones
• Digital Cameras
• Handheld Electronics
• Notebook Computers
• PDAs
• Portable Communication Devices
• Remote Controls