BL9193

BL9193 300mA Ultra-low Noise, Ultra-Fast CMOS LDO Regulator 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:210mV@300mA Wide Operating Voltage Ranges:2V to 6V 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 Fast output discharge Available in 5-Lead SOT-23 and SC-70 Package APPLICATIONS Cellular and Smart Phones Battery-Powered Equipment Laptop, Palmtops,Notebook Computers Hand-Held Instruments PCMCIA Cards MP3/MP4/MP5 Players Portable Information Appliances DESCRIPTION The BL9193 is designed for portable RF and wireless applications with demanding performance and space requirements. The BL9193 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 BL9193 also works with lowESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices. The BL9193 consumes less than 0.01µA in shutdown mode and has fast turnon time less than 50µs. The other features include ultra low dropout voltage, high ou...