The RT9094A is a very low dropout linear regulator which operates from input voltage as low as 0.8V. The device is capable of supplying 2A of output current with a typical dropout voltage of only 100mV. A VBIAS supply is required to run the internal reference and LDO circuitry while output current comes directly from the VIN supply for high efficiency regulation. User-programmable soft-start limits the input inrush current and minimizes stress on the input power. The enable input and power good output allow easy sequencing with external regulators. This complete flexibility provides an easy-to-use robust power management solution for a wide variety of applications.
The RT9094A is stable with output capacitor greater than or equal to 2.2μF. A precise reference and error amplifier deliver 1% accuracy over load, line and temperature. Overcurrent limit and over-temperature protection are also included. The RT9094A is available in the WDFN-10L 3x3 package. The recommended ambient temperature range is -40°C to 85°C.


  • PCs, Servers, Modems, and Set-Top-Boxes
  • FPGA Applications
  • DSP Core and I/O Voltages
  • Instrumentation
  • Post-Regulation Applications
  • Applications With Sequencing Requirements
Key Spec.
Status Active
Vin (min) (V) 0.8
Vin (max) (V) 5.5
Vout (min) (V) 0.8
Vout (max) (V) 3.6
Output Adj. Method Resistor
Accuracy (+/- %) 2
Iout (max) (mA) 2000
Vdropout @ rated current (typ) (mV) 100 @ 2A
Bias Rail Yes
Cout Type Ceramic
Charge Pump No
Features Adjustable Soft-Start;Enable Input;Low Dropout;OCP;Power Good
Package Type WDFN3x3-10
  • Ultra low VIN Range: 0.8V to 5.5V
  • VBIAS Voltage Range: 2.7V to 5.5V
  • VOUT Voltage Range: 0.8V to 3.6V
  • Low Dropout: 100mV Typical. at 2A, VBIAS = 5V
  • 1% Accuracy Over Line/Load/Temperature
  • PGOOD Indicator for Easy Sequence Control
  • Programmable Soft-Start Provides Linear Voltage Startup
  • Stable with Any Output Capacitor ≥ 2.2μF
  • Overcurrent and Over-Temperature Protection
TitleLast UpdateDownload
2A ultra-Low Dropout Voltage LDO Regulators with Soft-Start2022/01/13
Technical Documents
TitleItem TypeLast UpdateDownload
Richtek Product Selection Guide [Jan., 2024] Selection Guide2024/01/18
Richtek Featured Product Tree [Aug., 2023] Selection Guide2023/08/07