MP4568

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60V, 100mA, Synchronous Step-Down Converter



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Product Description

The MP4568 is a high-frequency, step-down, switching regulator with integrated high-side/low-side, high-voltage power MOSFETs. It provides a highly efficient output of up to 100mA. 60V rated MOSFETs and 4.5V to 45V operation range accommodates a variety of step-down applications in automotive input environment. A 5μA shutdown mode quiescent current allows use in battery-powered applications. It allows for high power conversion efficiency over a wide load range by scaling down the switching frequency under light-load condition to reduce the switching and gate driver losses. The switching frequency during start-up and short circuit also can be scaled down to helps prevent inductor current runaway. Thermal shutdown provides reliable, fault-tolerant operation. The MP4568 is available in a 3mmx3mm QFN10 package.

Programmable

Product Features

  • 20μA Quiescent Current
  • Wide 4.5V to 45V Operating Range with 50V Input OVP
  • 60V Integrated MOSFETs with 0.7Ω and 2.25Ω Ron
  • Programmable Switching Frequency
  • Stable with Ceramic Output Capacitors
  • Low Output Ripple
  • Programmable Soft-Start
  • Adjustable Input UVLO Hysteresis
  • Precision Peak Current Limit without Current-Sensing Resistor
  • Programmable Peak Current Limit
  • >90% Efficiency at 10V VIN to 5V VOUT/2mA
  • 1.0V Feedback Reference Voltage
  • Low Shutdown Mode Current: <5μA
  • 3mmx3mm QFN10 Package

Parametrics

  • fsw (max) (kHz)1000
  • Vin (min) (V)4.5
  • Vin (max) (V)45
  • Iout (max) (A)0.1
  • Isw Limit (typ) (A)0.26
  • Vfb (typ) (V)1
  • Iq (typ) (mA)0.02
  • Regulated Outputs1
  • GradeCatalog
  • PackageQFN-10 (3x3)
  • Control ModeCurrent Mode
  • Common FeaturesExternal Soft Start, Synchronous Rectification
  • Special FeaturesProgrammable Frequency

Reference Materials