Renesas Electronics RAA223011 700V Non-Isolated AC-DC Buck Regulator features ultra-low standby power and an integrated 700V MOSFET capable of delivering up to 4.0W output power. It supports output voltage as low as 3.3V. The RAA223011 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 30kHz. 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 80%. The RAA223011 also features built-in frequency dithering which further reduces EMI noise.
