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