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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, 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.

Applications

  • CDMA/GSM Cellular Handsets
  • Battery-Powered Equipment
  • Laptop, Palmtops, Notebook Computers
  • Hand-Held Instruments
  • PCMCIA Cards
  • Portable Information Appliances
Key Spec.
RT9198 RT9198A
Status Active Active
Vin (min) (V) 2.5 2.5
Vin (max) (V) 5.5 5.5
Vout (min) (V) 1.5 1.5
Vout (max) (V) 5 5
Output Adj. Method Fixed Fixed
Accuracy (+/- %) 2 2
Iout (max) (mA) 300 300
Iq (typ) (uA) 90 90
Vdropout @ rated current (typ) (mV) 220 @ 0.3A 220 @ 0.3A
Cout Type Ceramic Ceramic
Features Enable Input;Extra Low Noise;High PSRR;Low Dropout;OCP;Output Discharge;Stable with Ceramic Capacitor Enable Input;Extra Low Noise;High PSRR;Low Dropout;OCP;Output Discharge;Stable with Ceramic Capacitor
Package Type SOT-23;SOT-25;TSOT-25 SOT-23;SOT-25;TSOT-25
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 Available
  • RoHS Compliant and 100% Lead (Pb)-Free
Part NumberPackage TypePackage Qty.Free SampleDistributorStockBuy From Authorized Distributor
RT9198-18GBRSOT-253,000 Request Digikey 2,481 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT9198-25GBRSOT-253,000 Request Digikey Lead-Time: 14 weeks Not Available
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT9198-25GJ5RTSOT-253,000 Request Digikey 3,000 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT9198-28GBRSOT-253,000 Request Digikey 3,000 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT9198-30GBRSOT-253,000 Request Digikey 2,890 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT9198-33GBRSOT-253,000 Request Digikey 10,921 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
Please confirm with our distributor or sales representative for actual stock status.
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