The RT9073A is a low-dropout (LDO) voltage regulators with enable function that operates from 1.2V to 5.5V. It provides up to 250mA of output current and offers low-power operation in miniaturized packaging.

The features of low quiescent current as low as 1μA and almost zero disable current is ideal for powering the battery equipment to a longer service life. The RT9073A is stable with the ceramic output capacitor over its wide input range from 1.2V to 5.5V and the entire range of output load current (0mA to 250mA).



  • Portable, Battery Powered Equipment
  • Ultra Low Power Microcontrollers
  • Notebook Computers
Key Spec.
Status Active
Vin (min) (V) 1.2
Vin (max) (V) 5.5
Vout (min) (V) 0.9
Vout (max) (V) 3.3
Output Adj. Method Fixed
Accuracy (+/- %) 2
Iout (max) (mA) 250
Iq (typ) (uA) 1
Vdropout @ rated current (typ) (mV) 450 @ 0.25A
Bias Rail No
Cout Type Ceramic;Tantalum
Charge Pump No
Features Enable Input;Low Dropout;Stable with Ceramic Capacitor
Package Type SC-82;ZQFN1x1-4
  • 1μA Ground Current at no Load
  • PSRR = 75dB at 1kHz
  • ±2% Output Accuracy
  • 250mA (VIN ≥ 2.3V) Output Current with EN
  • Low (0.1μA) Disable Current
  • 1.2V to 5.5V Operating Input Voltage
  • Dropout Voltage : 0.45V (typ.) at 250mA when VOUT ≥ 3V
  • Support Fixed Output Voltage 0.9V, 1.05V, 1.2V, 1.5V, 1.8V, 1.9V, 2.5V, 2.7V, 2.8V, 2.9V, 3V, 3.3V
  • Stable with Ceramic or Tantalum Capacitor
  • Current Limit Protection
  • Over Temperature Protection
  • ZQFN-4L 1x1 (ZDFN-4L 1x1), SC-82 Packages Available
TitleLast UpdateDownload
1μA IQ, 250mA Low-Dropout Linear Regulator2015/04/23