Features and Benefits

  • 2.7V to 5.5V Input Voltage Range
  • 0.6V to 2.5V Adjustable Output Voltage Range
  • VOUT1 = 1.8V/1.5V at 500mA (MAX8561)
  • VOUT2 = 1.2V at 400mA or Bypass Mode (MAX8562)
  • 2MHz PWM Switching Frequency (MAX8561)
  • 4MHz PWM Switching Frequency (MAX8562)
  • 0.1µA (typ) Shutdown Current
  • Surface-Mount Construction
  • Fully Assembled and Tested

Product Details

The MAX8561 evaluation kit (EV kit) demonstrates the MAX8561/MAX8562s' up to 4MHz pulse-width modulated (PWM) step-down DC-DC converters. The two circuits are optimized for powering the DSP/microprocessor or the power amplifiers (PAs) in wireless applications. The MAX8561 circuit provides two adjustable output voltages in the 0.6V to 2.5V range from a 2.7V to 5.5V input, and can deliver 500mA of load current. In comparison, the MAX8562 circuit provides an adjustable voltage in the 0.6V to 2.5V range and a bypass mode where the output voltage is shorted to the input by an external MOSFET.


  • CDMA/RF Power-Amplifier Supplies
  • Cell Phones/Smartphones
  • Microprocessor/DSP Core Supplies
  • PDAs, DSC, and MP3 Players