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The RT8085A is a high efficiency switching converter for applications operating input voltage from 2.95V to 5.5V and requiring up to 6A maximum load. This single-chip converter provides extremely compact, fast and accurate power delivery solutions for low output voltage applications. The RT8085A provides the reference input REFIN to allow a dynamic output voltage change. The RT8085A automatically switches from Continuous Conduction Mode (CCM) to Discontinuous Conduction Mode (DCM) for light load efficiency.

Applications

  • Point of Load Voltage Regulators
  • Notebook
  • Ultrabook
  • Tablet PCs
  • Portable Devices
Key Spec.
RT8085A
Status NRND
Recommended Alternative  RT5789A/RT5789B
Vin (min) (V) 2.95
Vin (max) (V) 5.5
Number of Outputs 1
Vout (min) (V) 0.6
Vout (max) (V) 3.3
Output Adj. Method Ext Vref;Resistor
Iout (max) (A) 6
Current Limit (typ) (A) 9
Freq (typ) (kHz) 700
Ext Sync No
Ron_HS (typ) (mOhm) 38
Ron_LS (typ) (mOhm) 20
Iq (typ) (mA) 0.35
Features Current Mode Control;Diode Emulation Mode;OCP;OTP;OVP;PSM;Power Good;UVP
Package Type WDFN3x3-12
Features
  • External Reference Input REFIN
  • Low On-Resistance
    ► 38mΩ of High-Side MOSFET
    ► 20mΩ of Low-Side MOSFET
  • DCM Operation for Light Load Efficiency
  • Support MLCC Capacitors
  • 700kHz Switching Frequency
  • Power Good Indictor
  • Enable Control
  • Cycle-by-Cycle Current Limit
  • Short-Circuit Protection
  • Latch Off UVP
  • Thermal Shutdown
  • RoHS Compliant and Halogen Free
Reference Design
TitleLast UpdateDownload
Richtek Load Transient Tool2022/07/25
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