The RAA223012 is a universal input AC/DC switching regulator with ultra-low standby power that  features a 700V integrated MOSFET capable of delivering up to 2.5W output power. It supports output voltage as low as 3.3V.

The 700V AC/DC regulator supports multiple topologies such as buck, primary-side-regulated flyback, and secondary-side-regulator flyback.

The RAA223012 combines constant off-time control for heavy load and Pulse Frequency Modulation (PFM) for light-load operation. Constant off-time controls switching frequency above the audible frequency of approximately 50kHz. PFM eliminates any potential audible noises while offering  superior light-load efficiency and ultra-low power consumption (< 10mW at no load). Efficiency is achieved up to 75%. The built-in frequency dithering further reduces the EMI noise spectrum.

The RAA223012 also features input brownout protection that prevents input circuitry from the overcurrent at low input voltage, and hiccup protections for output fault conditions such as  short-circuit, overload, and open feedback.

The RAA223012 is available in a small 5 Ld TSOT23 and 8 Ld SOIC packages.


  • Ultra low standby power (< 10mW)
  • No audible noise
  • Low quiescent current (< 100μA)
  • Output voltage as low as 3.3V
  • Low EMI with frequency dithering
  • 5 Ld TSOT23 and 8 Ld SOIC package options
  • Programmable PFM allows optimization of COUT for various standby power requirements
  • Protection features: Short-Circuit Protection (SCP), Overload Protection (OLP), Open Feedback Protection, and Over-Temperature Protection (OTP).




  • Home appliances
  • Home automation, IoT, and sensors
  • Metering and Industry control
  • Bias power


Type Title Date
Datasheet PDF 2.90 MB
Brochure PDF 5.49 MB 日本語
End Of Life Notice PDF 603 KB
Other XLSX 167 KB
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Design & Development

Software & Tools

Software & Tools

Software title
Software type
iSim:PE Offline Simulation Tool
iSim Personal Edition (iSim:PE) speeds the design cycle and reduces risk early in any project, identifying parts that can be used in current as well as next-generation designs.
Simulator Renesas
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Boards & Kits

Boards & Kits


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