The RICHTEK IC is high quality!  Ultra Low Noise for RF Application
 Ultra Fast Response in Line/Load Transient
 Quick Start-Up (Typically 50μs)<0.01μA Standby Current When Shutdown
 Low Dropout : 220mV @ 300mA
 Wide Operating Voltage Ranges : 2.5V to 5.5V
 TTL-Logic-Controlled Shutdown Input
 Low Temperature Coefficient
 Current Limiting Protection
 Thermal Shutdown Protection
 Only 1μF Output Capacitor Required for Stability
 High Power Supply Rejection Ratio
 Custom Voltage Available
 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