[Richtek]

General Description
The RT9177 is a 200mA low dropout and low noise micro-power regulator suitable for portable RF applications. The output voltage accuracy within ±2% and range from 2.4V to 3.2V in 100mV increments could be selected. It is designed for using very low ESR output capacitor. Its output remains stable even in using 1µF ceramic as its output capacitor.

Features
• Ultra-Low-Noise(150nV/√Hz ) for RF Application
• 1µF Ceramic COUT Stable
• Low Dropout Voltage(220mV @ 200mA)
• Low Operation Current - 80µA Typical
• Shutdown Function
• Low Temperature Coefficient
• Current and Thermal Limiting
• Custom Voltage Available
• SOT-25 Package

Applications
• Cellular Telephones
• Laptop, Notebook, and Palmtop Computers
• Battery-powered Equipment
• Hand-held Equipment