MPQ4423H-AEC1

New
Industrial Grade, High Efficiency 3A, 36V, Synchronous Step-Down Converter with PG and Ext. Sync

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Product Description

The MPQ4423H is a high-frequency, synchronous, rectified, step-down, switch-mode converter with built-in power MOSFETs. It offers a very compact solution to achieve a 3A continuous output current with excellent load and line regulation over a wide input supply range. The MPQ4423H has synchronous mode operation for higher efficiency over the output current load range. Current-mode operation provides fast transient response and eases loop stabilization. Full protection features include over-current protection and thermal shut down. The MPQ4423H requires a minimal number of readily-available standard external components, and is available in a space-saving QFN-8 (3mmx3mm) package.

Product Features

  • Wide 4V to 36V Continuous Operating Input Range
  • 85mO/55mO Low RDS(ON) Internal Power MOSFETs
  • High-Efficiency Synchronous Mode Operation
  • Default 410kHz Switching Frequency
  • Synchronizes to a 200kHz to 2.2MHz External Clock
  • High Duty Cycle for Automotive Cold-crank
  • Power-Save Mode
  • Internal Soft-Start
  • Power Good
  • OCP Protection and Hiccup
  • Thermal Shutdown
  • Output Adjustable from 0.8V
  • Available in an QFN-8 (3mmx3mm) package
  • Available in AEC-Q100 Grade 1

Parametrics

  • fsw (max) (kHz)410
  • Vin (min) (V)4
  • Vin (max) (V)36
  • Iout (max) (A)3
  • Isw Limit (typ) (A)4.4
  • Max Duty Cycle (%)0.95
  • Vfb (typ) (V)0.792
  • Iq (typ) (mA)0.5
  • Regulated Outputs1
  • Vout (max) (V)32.4
  • Vout (min) (V)0.8
  • mps_Status2
  • Mps StatusNew
  • GradeAutomotive
  • PackageQFN-8 (3x3)
  • Control ModeCurrent Mode
  • Common FeaturesLight-Load Efficiency, Power Good, Synchronous Rectification
  • Special FeaturesExternal Frequency Sync