RT9193-33GB LDO Voltage Regulators 300mA Ultra-Low Noise Ultra-Fast CMOS LDO Regulator

General Description

The RT9193 is designed for portable RF and wireless applications with demanding performance

and space requirements. The RT9193 performance is optimized for battery-powered systems

to deliver ultra low noise and low quiescent current. A noise bypass pin is available for further

reduction of output noise. Regulator ground current increases only slightly in dropout, further

prolonging the battery life. The RT9193 also works with low-ESR ceramic capacitors, reducing

the amount of board space necessary for power applications, critical in hand-held wireless

devices. The RT9193 consumes less than 0.01μA in shutdown mode and has fast turn-on

time less than 50μs.

Features
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