2.8V-22V Vin, 3A Iout, 4-Switch Integrated Buck-Boost Converter



The MP28167 is a synchronous 4-switch integrated buck-boost converter, which is capable of regulating the output voltage from 2.8V to 22V wide input voltage range with high efficiency.

MP28167 uses constant-on-time control in buck mode and constant-off-time control in boost mode, providing fast load transient response as well as smooth buck-boost mode transient. MP28167 provides forced PWM switching mode, programmable output CC(Constant Current) current limit which supports flexible design for different applications.

The MP28167 also features with OCP/OVP/UVP, and thermal shutdown protection.

The MP28167 is available in a 16-pin QFN(3mmx3mm) package.


  • Wide 2.8V to 22V Operating Input-Voltage Range
  • Fixed 5V Output Voltage
  • 3A Output Current or 4A Input Current
  • 130mV Line Drop Compensation
  • 500kHz Fixed Switching Frequency
  • Forced PWM Switching Mode
  • Four Low RDS(ON) Internal Buck Power MOSFETs
  • Adjustable Accurate CC Output-Current Limit with Internal Sensing FET
  • Output Over-Voltage Hiccup Protection
  • Output Short Circuitry Hiccup Protection
  • Over Temperature Shutdown
  • EN Shutdown Discharge Function
  • Available in a QFN-16 (3mmx3mm) Package


  • PackageQFN-16 (3x3)
  • Isw (typ) (A)3
  • Vout (min) (V)5
  • Vout (max) (V)5
  • fsw (max) (kHz)500
  • Iq (typ) (mA)3
  • Vin (max) (V)22
  • 最小输入电压2.8