MP2452

Active
1A, 36V, 1MHz, Step-Down Converter in QFN


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Product Description

The MP2452 is a high frequency (1MHz) step-down switching regulator with integrated internal high-side high voltage power MOSFET. It provides up to 1A highly efficient output current with current mode control for fast loop response. The wide 3.3V to 36V input range accommodates a variety of step-down applications in automotive input environment. A 1? shutdown mode quiescent current allows use in battery-powered applications. High power conversion efficiency over a wide load range is achieved by scaling down the switching frequency at light load condition to reduce the switching and gate driving losses. Frequency fold-back helps prevent inductor current runaway during start-up. Thermal shutdown provides reliable, fault-tolerant operation. The MP2452 is available in the 2mmx3mm QFN8 package.

Product Features

  • 1A Continuous Load Current
  • 230μA Operating Quiescent Current
  • Wide 3.3V to 36V Operating Input Range
  • 500mΩ Internal Power MOSFET
  • 1MHz Fixed Switching Frequency
  • Internally Compensated
  • Stable with Ceramic Output Capacitors
  • Internal Soft-Start
  • >90% Efficiency
  • +0.8V FB Reference Voltage
  • Output Adjustable from +0.8V to 0.8xVIN
  • Low Current Shutdown Mode: <1uA
  • 2x3mm QFN8 Package

Parametrics

  • fsw (max) (kHz)1000
  • Vin (min) (V)3.3
  • Vin (max) (V)36
  • Iout (max) (A)1
  • Isw Limit (typ) (A)1.5
  • Vfb (typ) (V)0.794
  • Iq (typ) (mA)0.13
  • Regulated Outputs1
  • Vout (max) (V)33
  • Vout (min) (V)0.794
  • GradeCatalog
  • PackageQFN-8 (2x3)
  • Control ModeCurrent Mode