The RT2519W 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) at up to 1A. The input voltage range is from 2.2V to 6V and the output voltage is programmable as low as 0.8V. A P-MOSFET switch provides excellent transient response with just a 4.7μF ceramic output capacitor. The external enable control effectively reduces power dissipation while shutdown and further output noise immunity is achieved through bypass capacitor on NR pin. Additionally, the RT2519W features a precise 3% output regulation over line, load, and temperature variations. The device is available in the VDFN-8AL 3x3 package and is specified from -40°C to 125°C.


  • Telecom/Networking Cards
  • Motherboards/Peripheral Cards
  • Industrial Applications
  • Wireless Infrastructures
  • Set-Top Boxes
  • Medical Equipments
  • Notebook Computers
  • Battery Powered Systems
Key Spec.
Status Active
Vin (min) (V) 2.2
Vin (max) (V) 6
Vout (min) (V) 0.8
Vout (max) (V) 5.5
Output Adj. Method Resistor
Accuracy (+/- %) 3
Iout (max) (mA) 1000
Iq (typ) (uA) 190
Vdropout @ rated current (typ) (mV) 170 @ 1A
Bias Rail No
Cout Type Ceramic
Charge Pump No
Features Adjustable Soft-Start;Enable Input;Extra Low Noise;High PSRR;Industrial;Low Dropout;OCP;Stable with Ceramic Capacitor
Package Type VDFN3x3-8A
  • Very Low Dropout : 170mV Typical at 1A
  • Ultra High PSRR : 63dB @ 1kHz, 38dB @ 1MHz
  • Input Voltage Range : 2.2V to 6V
  • Adjustable Output Voltage : 0.8V to 5.5V
  • -40°C to 125°C Operating Junction Temperature Range
  • Excellent Noise Immunity
  • Fast Response Over Load and Line Transient
  • Stable with a 4.7μF Output Ceramic Capacitor
  • Accurate Output Voltage 3% Over Load, Line, Process, and Temperature Variations
  • Enable Control
  • Over-Current Protection
  • Over-Temperature Protection
TitleLast UpdateDownload
1A, Low Noise, Ultra High PSRR, Low-Dropout Linear Regulator2018/12/07
Technical Documents
TitleItem TypeLast UpdateDownload
Richtek Product Selection Guide [Jan., 2024] Selection Guide2024/01/18
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT2519WGQVVDFN3x3-8A1500 Request Buy from Distributor