General Description
The RT9181 is a low dropout voltage regulator with an output 2% accuracy and supply a continuous 150mA current within operating range from a +3V to +5.5V input. The power good function monitors the output voltage and indicates by pulling low the power good output (open drain).

Features
• Low Dropout Voltage Regulator, Output 1.2V
• Up to 150mA Output Current
• Power Good (POG) Function
• Chip Enable/Shutdown Function
• Load Independent, Low Ground Current, 160µA
• Current Limiting and Thermal Protection
• Under Voltage Lockout (UVLO)
• Low Variation Due to Load and Line Regulation
• Output Stable with Low ESR Capacitors
• SOT-25 Package

Applications
• Processor Power-Up Sequencing
• Laptop, Notebook, and Palmtop Computers