RT9013 特性
Wide Operating Voltage Ranges : 2.2V to 5.5V
Low Dropout : 250mV at 500mA
Ultra-Low-Noise for RF Application
Ultra-Fast Response in Line/Load Transient
Current Limiting Protection
Thermal Shutdown Protection
High Power Supply Rejection Ratio
Output Only 1μ μ μ μ μF Capacitor Required for Stability
TTL-Logic-Controlled Shutdown Input
RoHS Compliant and 100% Lead (Pb)-Free

RT9013 应用范围
DMA/GSM Cellular Handsets
Portable Information Appliances
Laptop, Palmtops, Notebook Computers
Hand-Held Instruments
Mini PCI & PCI-Express Cards
PCMCIA & New Cards

RT9013引脚定义
RT9013-VOUT Regulator Output 
RT9013-NC  No Internal Connection 
RT9013-GND  Common Ground
RT9013-EN Enable Input Logic, Active High. When the EN goes to a logic low, the device will be shutdown mode.
RT9013-VIN Supply Input