The RT2517A is a high performance positive voltage regulator designed for applications requiring low input voltage and ultra low dropout voltage at up to 1A. 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 2.2V and the output voltage is adjustable by an external resistive divider. The RT2517A provides an excellent output voltage regulation over variations in line, load and temperature. Current limit and thermal shutdown 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 RT2517A is available in the VDFN-8AL 3x3 package.


  • Automotive Audio, Navigation, & Info systems
  • Industrial Grade General Purpose Point of Load
  • Digital Set top Boxes
  • Vehicle Electronics
Key Spec.
Status Active
Vin (min) (V) 2.2
Vin (max) (V) 6
Vout (min) (V) 1.2
Vout (max) (V) 5
Output Adj. Method Resistor
Accuracy (+/- %) 2.5
Iout (max) (mA) 1000
Iq (typ) (uA) 400
Vdropout @ rated current (typ) (mV) 150 @ 1A
Bias Rail No
Cout Type Ceramic
Charge Pump Yes
Features Enable Input;High PSRR;Industrial;Low Dropout;OCP;Output Discharge;Stable with Ceramic Capacitor
Package Type VDFN3x3-8A
  • Input Voltage Range : 2.2V to 6V
  • VOUT Range from 1.2V to VIN - VDROP
  • Reference Voltage : 1.2V ±2.5% over -40°C to 85°C
  • Ultra Low Dropout Voltage : 150mV at 1A over
    -40°C to 85°C
  • Low Quiescent 0.1μA in Shutdown Mode
  • Soft-Discharge Function
  • Thermal Shutdown and Current Limit
TitleLast UpdateDownload
1A, 6V, Ultra Low Dropout Linear Regulator2015/05/28