Richtek Technology RT9198
The RT9198/A is designed for portable RF and wireless applications with demanding performance and space requirements. The RT9198/A performance is optimized for battery-powered systems to deliver ultra low noise and low quiescent current. The RT9198/A also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices.GENERAL DESCRIPTION
Regulator ground current increases only slightly in dropout, further prolonging the battery life. The RT9198/A consumes less than 0.01μA in shutdown mode and has fast turn-on time less than 50μs. The other features include ultra low dropout voltage, high output accuracy, current limiting protection, and high ripple rejection ratio. Available in the SOT-23-3, SOT-23-5, TSOT-23-3, TSOT-23-5, SC-70-5, SC-82, MSOP-8 and WDFN-6L 2x2 packages, the RT9198/A also offers a range from 1.5V to 5.0V with 0.1V per step.FEATURES
● Low-Noise for RF Application● 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 Avai...