Industrial Grade, 0.5A, 50V, 1.2MHz Step-Down Converter in TSOT23-6

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Product Description

The MPQ2456 is a monolithic, step-down, switch-mode converter with a built-in power MOSFET. It achieves 0.5A of peak output current over a wide input supply range with excellent load and line regulation. 
Current-mode operation provides fast transient response and eases loop stabilization. Full protection features include cycle­by­cycle current limiting and thermal shutdown. 
The MPQ2456 requires a minimal number of readily available, external components and is available in a TSOT23-6 package.


Product Features

  • 0.5A Peak Output Current
  • 1Ω Internal Power MOSFET
  • Capable of Starting Up with a Large Output Capacitor
  • Stable with Low ESR Ceramic Output Capacitors
  • Up to 90% Efficiency
  • 0.1μA Shutdown Mode
  • Fixed 1.2MHz Frequency
  • Thermal Shutdown
  • Cycle-by-Cycle Over-Current Protection (OCP)
  • Wide 4.5V to 50V Operating Input Range
  • Output Adjustable from 0.81V to 0.9 x VIN
  • Available in a TSOT23-6 Package


  • fsw (max) (kHz)1200
  • Vin (min) (V)4.5
  • Vin (max) (V)50
  • Iout (max) (A)0.5
  • Isw Limit (typ) (A)1.25
  • Max Duty Cycle (%)91
  • Vfb (V)0.812
  • Iq (typ) (mA)0.73
  • Regulated Outputs1
  • Vout (max) (V)45
  • Vout (min) (V)0.81
  • GradeIndustrial
  • PackageTSOT23-6
  • Control ModeCurrent Mode
Quality Policy, Certificates & Reliability Reports
All MPS parts are lead-free, halogen-free and adhere to the RoHS directive. See Environmental section for details.