3.5A, 4MHz, 36V Step-Down Converter

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Product Description

The MPQ4462 is a high-frequency, step-down, switching regulator with an integrated, high-side, high-voltage, power MOSFET. It provides a 3.5A output with current-mode control for fast loop response and easy compensation. The wide 3.8V-to-36V input range accommodates a variety of step-down applications, including those in an automotive input environment. A 120µA operational quiescent current allows for battery-powered applications. Switching-frequency scaling allows for high power-conversion efficiency over a wide load range by scaling down the switching frequency at light loads to reduce the switching and gate driving losses. The frequency foldback prevent inductor-current runaway during startup, and thermal shutdown provides reliable and fault tolerant operation. The MPQ4462 can operate at up to 4MHz for EMI-sensitive applications, such as AM radio and ADSL applications. The MPQ4462 is available in both 3mm×3mm QFN10 and SOIC8E packages.

Product Features

  • 120µA Quiescent Current
  • Wide 3.8V-to-36V Input Range
  • 150mO Internal Power MOSFET
  • Up to 4MHz Programmable Switching Frequency
  • Stable with a Ceramic Capacitor
  • Internal Soft-Start
  • Internally-Set Current Limit without a Current Sensing Resistor
  • Output Adjustable from 0.8V to 30V
  • Available in 3mm×3mm QFN10 and SOIC8E Packages.
  • AEC-Q100 Qualified


  • fsw (max) (kHz)4000
  • Vin (min) (V)3.8
  • Vin (max) (V)36
  • Iout (max) (A)3.5
  • Isw Limit (typ) (A)5.5
  • Vfb (V)0.792
  • Iq (typ) (mA)0.12
  • Regulated Outputs1
  • Vout (max) (V)30
  • Vout (min) (V)0.8
  • PGNo
  • GradeAutomotive
  • PackageQFN-10 (3x3)
  • Control ModeCurrent Mode
  • Common FeaturesLight-Load Efficiency
  • Special FeaturesProgrammable Frequency

Reference Materials

Quality Policy, Certificates & Reliability Reports
All MPS parts are lead-free, halogen-free and adhere to the RoHS directive. See Environmental section for details.