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. Regulator ground current increases only slightly in dropout, further prolonging the battery life. 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. 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, SC-70-5, SC-82 and WDFN-6L 2x2 packages, the RT9198/A also offers a range from 1.5V to 5.0V with 0.1V per step.
Note : Richtek Pb-free and Green products are : ► RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD- 020. ► Suitable for use in SnPb or Pb-free soldering processes. ► 100% matte tin (Sn) plating.
• 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 Available • RoHS Compliant and 100% Lead (Pb)-Free
