The RAA211412 is a DC/DC step-down (Buck) regulator that supports a wide operating input voltage range (from 5.8V to 45V) and adjustable output voltage. It can deliver up to continuous 1A output current with premium load regulation and line regulation performance. The RAA211412 employs the PWM peak-current mode control architecture at a 630kHz switching frequency and provides fast transient response performance. In addition, with internal soft-start and loop compensation circuit, it can be easily used with minimum BOM. The RAA211412 also offers protection features such as cycle-by-cycle current limit, input voltage UVLO, output voltage undervoltage protection, and thermal shutdown. The RAA211412 is available in the TSOT23-6 package.


  • Wide input voltage range: 5.8V to 45V
  • Adjustable output voltage
  • Up to 1A output current
  • Internal compensation
  • Internal soft-start
  • 600mΩ internal MOSFET
  • 630kHz switching frequency
  • Pulse skipping mode under light load condition
  • Cycle-by-cycle current limit
  • Input voltage UVLO and output voltage undervoltage protection
  • Thermal shutdown
  • Available in the TSOT23-6 package



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