3A, 24V, 1.3MHz Step-Down Converter with 3-24V Input Range



The MP2227 is an internally compensated 1.6MHz fixed frequency PWM synchronous step-down regulator. MP2227 operates from a 3V to 24V input and generates an adjustable output voltage from 0.8V to 0.9xVIN at up to 3A load current. The MP2227 integrates a 160mΩ high side switch and an 80mΩ synchronous rectifier for high efficiency without an external Schottky diode. With peak current mode control and internal compensation, it is stable with an output ceramic capacitor and a small inductor. Fault protection includes hiccup short-circuit protection, cycle-by-cycle current limiting and thermal shutdown. Other features include frequency synchronization and soft-start.  The MP2227 is available in a small 3mm x 3mm 10-lead QFN package.



  • 3A Output Current
  •  Input Supply Range: 3V to 24V
  •  160mΩ high-side, 80mΩ low-side Internal Power MOSFET  Switches
  •  All Ceramic Output Capacitor Design
  •  Up to 95% Efficiency
  •  1.6MHz Fixed Switching Frequency
  •  Adjustable Output from 0.8V to 0.9xVIN
  •  Internal LDO for VCC supply
  •  1MHz to 2MHz Frequency Synchronization
  •  POK
  •  Thermal Shutdown
  •  Cycle-by-Cycle Current Limiting
  •  Hiccup Short Circuit Protection
  •  10-lead, 3mm x 3mm QFN Package


  • fsw (max) (kHz)1300
  • 最小输入电压3
  • Vin (max) (V)24
  • Iout (max) (A)3
  • Isw Limit (typ) (A)4.5
  • Max Duty Cycle (%)0.9
  • Vfb (V)0.8
  • Iq (typ) (mA)1
  • 额定输出1
  • Vout (max) (V)21
  • Vout (min) (V)0.8
  • GradeCatalog
  • PackageQFN-10 (3x3)
  • Control ModeCurrent Mode
  • Common FeaturesPower Good, Synchronous Rectification
  • Special Features外部频率同步