18V, Dual-Channel 3A/2A, 540kHz, Synchronous, Step-Down Converter in 8-Pin TSOT23 Package

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Product Description

The MP2223 is a dual-channel, synchronous, rectified, step-down, switch-mode converter with built-in, internal power MOSFETs. The MP2223 offers a very compact solution that achieves 3A/2A of continuous output current over a wide input supply range.

Two channels operate 180° out-of-phase to minimize the input capacitor and alleviate EMI. Current-mode operation provides fast transient response and eases loop stabilization. Full protection features include hiccup mode over-current protection (OCP) and thermal shutdown.

Other features include power-save mode (PSM) at light load and a separate enable control (EN) for power-sequence control.

The MP2223 requires a minimal number of readily available, standard, external components and is available in a space saving 8-pin TSOT23 package.

Product Features

  • Wide 4.5V to 18V OperatingInputRange
  • 70mΩ/50mΩ for Ch1, 100mΩ/60mΩ for  Ch2, Low RDS(ON) Internal Power MOSFETs
  • Up to 3A (Ch1) and 2A (Ch2) Maximum Continuous Output Current
  • 180° Out-of-Phase Operation
  • Power-Save Mode for Light Load
  • 540kHz Fixed Switching Frequency
  • Over-Current Protection (OCP) and Hiccup
  • Over-Voltage Protection (OVP )
  • Thermal Shutdown
  • Both Channel Outputs Adjustable from 0.8V
  • Available in a TSOT23-8 Package


  • fsw (max) (kHz)540
  • Vin (min) (V)4.5
  • Vin (max) (V)18
  • Iout (max) (A)3,2
  • Isw Limit (typ) (A)5.4,4.4
  • Max Duty Cycle (%)0.89
  • Vfb (typ) (V)0.8
  • Iq (typ) (mA)1
  • Regulated Outputs2
  • Vout (max) (V)16
  • Vout (min) (V)0.8
  • GradeCatalog
  • PackageTSOT23-8
  • Control ModeCurrent Mode
  • Common FeaturesDual Output, Light-Load Efficiency, Synchronous Rectification
  • Special Features180° Phase-Shifted Operation