DESCRIPTION

The A6307 is designed for portable RF and wireless applications with demanding performance and space requirements. The A6307 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 A6307 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices. The A6307 consumes less than 0.01A in shutdown mode and has fast turn-on time less than 50s. The other features include ultra low dropout voltage, high output accuracy, current limiting protection, short-load protection, and high ripple rejection ratio.

The A6307 are available in SOT-25 package.

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 : 300mV @ 100mA

 Output Voltage Range :1.0V to 5.0V

(selectable in100mV steps)

 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: 70dB (1kHz)

 Custom Voltage Available

 Available in SOT-25 Package

APPLICATION

 CDMA/GSM Cellular Handsets

 Battery-Powered Equipment

 Laptop, Palmtops, Notebook Computers

 Hand-Held Instruments

 PCMCIA Cards