General Description
The RT9004 is designed for portable RF and wireless applications with demanding performance and space requirements. The RT9004 performance is optimized for battery-powered systems to deliver ultra low noise and low quiescent current. Regulator ground current increases only slightly in dropout, further prolonging the battery life.

Features
• Short Circuit Thermal Folded Back Protection
• Low-Noise for RF Application
• Fast Response in Line/Load Transient
• Quick Start-Up (Typically 50us)
• Low Dropout : 220mV @ 300mA
• Wide Operating Voltage Ranges : 2.5V to 5.5V
• TTL-Logic-Controlled Shutdown Input
• Low Temperature Coefficient
• Thermal Shutdown Protection
• Only 1uF Output Capacitor Required for Stability
• High Power Supply Rejection Ratio
• Custom Voltage Available
• Small 10-Lead VDFN and WDFN Packages
• RoHS Compliant and 100% Lead (Pb)-Free

Applications
• CDMA/GSM Cellular Handsets
• Battery-Powered Equipment
• Laptop, Palmtops, Notebook Computers
• Hand-Held Instruments
• PCMCIA Cards
• Portable Information Appliances