The RT9048A is a high performance positive voltage regulator designed for applications requiring ultra-low input voltage and ultra-low dropout voltage at up to 1.5A. The feature of ultra-low dropout voltage is ideal for applications where output voltage is very close to input voltage. The input voltage can be as low as 1.6V and the output voltage is adjustable by an external resistive divider as low as 0.65V. The RT9048A provides an excellent output voltage regulation over variations in line, load and temperature. Over-current and over-temperature protection functions are provided. Additionally, an enable pin is designed to further reduce power consumption while shutdown and the shutdown current is as low as 0.1μA.

The RT9048A is available in the WDFN-8L 3x3 package.


  • Telecom/Networking Cards
  • Motherboards/Peripheral Cards
  • Industrial Applications
  • Wireless Infrastructure
  • Set-Top Box
  • Medical Equipment
  • Notebook Computers
  • Battery Powered Systems
Key Spec.
Status Active
Vin (min) (V) 1.6
Vin (max) (V) 6
Vout (min) (V) 0.65
Vout (max) (V) 5.5
Output Adj. Method Resistor
Accuracy (+/- %) 2
Iout (max) (mA) 1500
Iq (typ) (uA) 700
Vdropout @ rated current (typ) (mV) 180 @ 1.5A
Bias Rail No
Cout Type Ceramic
Charge Pump Yes
Features Enable Input;Industrial;Low Dropout;OCP;Output Discharge;Stable with Ceramic Capacitor
Package Type WDFN3x3-8
  • Input Voltage as Low as 1.6V
  • Ultra-Low Dropout Voltage 300mV @ 1.5A
  • Over-Current Protection
  • Over-Temperature Protection
  • 0.1μA Input Current in Shutdown Mode
  • Enable Control
  • RoHS Compliant and Halogen Free
TitleLast UpdateDownload
1.5A, Low Input Voltage, Ultra-Low Dropout Linear Regulator with Enable2021/01/15
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT9048AGQWWDFN3x3-81500 Request Buy from Distributor