The RT8082 is a high efficiency synchronous, step-down DC/DC converter. Its input voltage range is from 2.7V to 5.5V and provides an adjustable regulated output voltage from 1V to 5V while delivering up to 3A of output current.

The internal synchronous low on-resistance power switches increase efficiency and eliminate the need for an external Schottky diode. The switching ripple voltage is easily smoothed-out by small package filtering elements due to a fixed operating frequency of 2MHz. The 100% duty cycle provides low dropout operation extending battery input range in portable systems. Current mode operation with internal compensation allows the transient response to be optimized over a wide range of loads and output capacitors.

The RT8082 operates in forced continuous PWM Mode, which minimizes ripple voltage and reduces the noise and RF interference.


  • LCD TV and Monitor
  • Notebook Computers
  • Distributed Power Systems
  • IP Phones
  • Digital Cameras
Key Spec.
Status Active
Vin (min) (V) 2.7
Vin (max) (V) 5.5
Number of Outputs 1
Vout (min) (V) 1
Vout (max) (V) 5
Output Adj. Method Resistor
Iout (max) (A) 3
Current Limit (typ) (A) 5
Freq (typ) (kHz) 2000
Ext Sync No
Ron_HS (typ) (mOhm) 75
Ron_LS (typ) (mOhm) 55
Iq (typ) (mA) 0.57
Features 100% Duty Cycle;Current Mode Control;Enable Input;Force PWM;Internal Compensation;OCP;Power Good;Stable with Ceramic Capacitor;UVP
Package Type WDFN3x3-12E
  • High Efficiency : Up to 95%
  • 2MHz Fixed Frequency PWM Operation
  • No Schottky Diode Required
  • 1V Reference Allows Low Output Voltage
  • Output Current up to 3A
  • Forced Continuous Mode Operation
  • Low Dropout Operation : 100% Duty Cycle
  • Enable Function
  • Power Good Function
  • Internal Soft-Start
  • RoHS Compliant and Halogen Free
TitleLast UpdateDownload
3A, 2MHz, Synchronous Step-Down Converter2012/09/26
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
Reference Design
TitleLast UpdateDownload
Richtek Load Transient Tool2022/07/25
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT8082GQWWDFN3x3-12E1500 Request Buy from Distributor