1A, 6V, Ultra-Low Dropout Linear Regulator


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The RT2517B is a high performance positive voltage regulator designed for use in applications requiring ultra-low input voltage and ultra-low dropout voltage at up to 1A. The feature of ultra-low dropout voltage is ideal for the application 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 RT2517B provides an excellent output voltage regulation over variations in line, load and temperature. Current limit and thermal shutdown 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 1.5μA.

The RT2517B is available in the SOP-8 (Exposed Pad) 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
Iout (max) (mA) 1000
Iq (typ) (uA) 700
Vdropout @ rated current (typ) (mV) 200 @ 1A
Bias Rail No
Cout Type Ceramic
Charge Pump Yes
Features AEC-100 Qualified;Low Dropout
Package Type PSOP-8
  • AEC-Q100 Grade2 Certification
  • Input Voltage Range : 2.2V to 6V
  • VOUT Range from 1.2V to VIN - VDROP
  • Reference Voltage : 1.2V ±2% over -40°C to 105°C
  • Ultra-Low Dropout Voltage : 200mV at 1A over
    -40°C to 105°C
  • Low Quiescent 1.5μA in Shutdown Mode
  • Soft Discharge Functionality
  • Thermal Shutdown and Current Limit
  • RoHS Compliant and Halogen Free
TitleLast UpdateShareDownload
1A, 6V, Ultra-Low Dropout Linear Regulator2013/05/06
Technical Documents
TitleLast UpdateShareDownload
Automotive Product Selection Guide2020/12/30
Richtek Wide Input Voltage Range DC/DC Power Solutions for Industrial, Automotive and LED lighting applications2020/12/30
Richtek Selection Guide [Oct., 2020]2020/12/30
Additional Documents
Title Last Update ShareDownload
Power Management Introduction and Selection Guide 2020/12/07
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT2517BGSPPSOP-82500 Not available Buy from Distributor