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The RT9049 is a high-performance, 500mA LDO regulator, offering extremely high PSRR and ultra-low dropout. The RT9049 is designed for portable RF and wireless applications with demanding performance and space requirements. The RT9049 quiescent current is as low as 115μA, further prolonging the battery life. The RT9049 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary which is critical for power applications in hand-held wireless devices. The RT9049 consumes typical 1.35μA in shutdown mode and has fast turn-on time less than 40μs. The other features include ultra-low dropout voltage, high output accuracy, current limiting protection, and high ripple rejection ratio. The RT9049 is available in the SOT-23-5 package.

Applications

  • CDMA/GSM Cellular Handsets
  • Portable Information Appliances
  • Laptop, Palmtops, Notebook Computers
  • HandHeld Instruments
  • Mini PCI & PCI-Express Cards
  • PCMCIA & New Cards
Key Spec.
RT9049
Status Active
Vin (min) (V) 2.2
Vin (max) (V) 5.5
Vout (min) (V) 1.2
Vout (max) (V) 1.2
Output Adj. Method Fixed
Accuracy (+/- %) 2
Iout (max) (mA) 500
Iq (typ) (uA) 115
Vdropout @ rated current (typ) (mV) 250 @ 0.5A
Cout Type Ceramic
Features Enable Input;Extra Low Noise;Fast Transient Response;High PSRR;Low Dropout;OCP;Output Discharge;Stable with Ceramic Capacitor
Package Type SOT-25
Features

  • Wide Operating Voltage Ranges : 2.2V to 5.5V

  • Low Dropout : 250mV at 500mA
  • Ultra-Low-Noise for RF Application
  • Ultra-Fast Response in Line/Load Transient
  • Current Limiting Protection
  • Thermal Shutdown Protection
  • High Power Supply Rejection Ratio
  • Only 10μF Output Capacitor Required for Stability
  • 1.35μA Shutdown Current
  • TTL-Logic-Controlled Shutdown Input
  • RoHS Compliant and Halogen Free

Please confirm with our distributor or sales representative for actual stock status.
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