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