The RAA214220 is a low dropout linear voltage regulator that operates with a very wide input voltage range. It provides up to 150mA of output current. The device features a wide input voltage range (2.5V–20V) with excellent line and load regulation. It has integrated fault protection such as over temperature shut down (OTSD) and short-circuit current limit. It is suited for battery powered and USB devices. The output voltage of the device is adjustable with an external resistor network between the output pin and ground. It is well regulated over temperature and the operating range of the input voltage and load. The device is stable with an MLCC output capacitor as low as 1µF. The RAA214220 is available in the 5-pin TSOT23 package.


  • Wide Input Voltage Range 2.5V to 20V
  • Output Current up to 150mA
  • Low Ground Current
  • Adjustable and Accurate Output Voltage from 1.2266V to 18V
  • Low Dropout Voltage: 225mV typical at 150mA load
  • Excellent Line and Load Regulation
  • Stable with 1μF–47μF MLCC Output Capacitor
  • Integrated Fault Protections Including Thermal Shutdown and Current Limit
  • Available in the compact and cost effective TSOT23 package



  • Battery-powered equipment
  • MCU power supply
  • Electric meters
  • USB devices
  • Laptop computers and tablets
  • Portable modules and appliances


Title language Type Format File Size Date
star RAA214220 Datasheet Datasheet PDF 884 KB
AN1681: Grounding Techniques Application Note PDF 509 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB


memoryBoards & Kits

Part Number Title Type Company
RTKA214220DR0000BU 150mA 20V Wide Input Voltage Range LDO Linear Regulator Evaluation Board Evaluation Renesas