The RT9086 is a high performance positive low dropout (LDO) regulator designed for applications requiring very low dropout voltage and ultra-high Power Supply Ripple Rejection (PSRR) low noise, low quiescent current that can supply up to 250mA output current. The input voltage range is from 2.2V to 5.5V. The device is designed to work with a 1μF input and a 1μF output ceramic capacitor (no separate noise bypass capacitor is required).

The RT9086 features a precise 2% output regulation over line, load, and temperature variations in WL-CSP-4B 0.67x0.67 (BSC) package. The output voltage is available from 1.2V to 4.5V in 25mV steps.

The recommended junction temperature range is -40°C to 125°C, and the ambient temperature range is -40°C to 85°C.


  • Mobile Phones, Tablets
  • Digital Cameras and Audio Devices
  • Portable and Battery-Powered Equipment
  • Portable Medical Equipment
  • Smart Meters
  • IP Cameras
  • Drones
  • Telecom/Networking Cards
  • Wireless Infrastructures
  • Medical Equipments
Key Spec.
Status Active
Vin (min) (V) 2.2
Vin (max) (V) 5.5
Vout (min) (V) 1.2
Vout (max) (V) 4.5
Output Adj. Method Fixed
Accuracy (+/- %) 2;3
Iout (max) (mA) 250
Iq (typ) (uA) 16
Vdropout @ rated current (typ) (mV) 120 @ 0.25A
Cout Type Ceramic
Features Enable Input;Extra Low Noise;High PSRR;OCP
Package Type WL-CSP0.67x0.67-4(BSC);SOT-25;ZQFN1x1-4
  • Input Voltage Range : 2.2V to 5.5V
  • Adjustable Output Voltage : 1.2V to 4.5V
  • PSRR
    ► 85dB @ 1kHz (20mA)
    ► 80dB @ 10kHz (20mA)
  • Output Current : 250mA
  • Very Low Dropout : 120mV
  • Very Low IQ (Enabled) : 16μA
  • Virtually Zero IQ (Disable) : < 1μA
  • Very Low IG (Enabled) : 16μA
  • Start-up Time : 80μs
  • -40°C to 125°C Operating Junction Temperature Range
  • Excellent Noise Immunity
  • Fast Response Overload and Line Transient
  • Stable with a 1μF Input and Output Ceramic Capacitors
  • Accurate Output Voltage 2% Overload, Line, Process, and Temperature Variations
  • Over-Current Protection
  • Over-Temperature Protection
TitleLast UpdateDownload
250mA, Ultra-Low Noise, Low Quiescent Current, LDO Regulator2018/01/25
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT9086-12GBSOT-253000 Request Buy from Distributor
RT9086-18GBSOT-253000 Request Buy from Distributor
RT9086-28GBSOT-253000 Request Buy from Distributor
RT9086-28GQZZQFN1x1-42500 Request Buy from Distributor
RT9086-28GQZZQFN1x1-410000 Request Buy from Distributor