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Monolithic Power Systems (MPS) MPQ4571 Synchronous Step-Down Converters

Monolithic Power Systems (MPS) MPQ4571 Synchronous Step-Down Converters achieve up to 1A of continuous output current with peak current control for superior transient response. The wide 4.5V to 60V input voltage range accommodates step-down applications in automotive input environments, while the 2μA shutdown mode quiescent current is ideal for battery-powered applications. The MPQ4571 series offers 250mΩ/45mΩ internal power MOSFETs, 40µA quiescent current, built-in soft start, enable control, and power good indications. The high-duty cycle and low-dropout mode are supplied for automotive cold crank conditions. MPS MPQ4571 Synchronous Step-Down Converters are ideal for automotive infotainment, lamps, LEDs, and industrial power systems, and the QFN-12 (2.5mm x 3mm) package provides a compact solution.

Features

  • High-efficiency synchronous mode control
  • Selectable AAM or forced CCM operation at light load
  • Remote EN control
  • Power good indicator
  • Low-dropout mode
  • Overcurrent protection (OCP)
  • Short-circuit protection (SCP) with hiccup mode
  • VIN undervoltage lockout (UVLO)
  • Thermal shutdown
  • QFN-12 (2.5mm x 3mm) package
  • Wettable flank package available
  • AEC-Q100 Grade 1 available

Applications

  • Automotive infotainment
  • Automotive lamps and LEDs
  • Automotive motor control
  • Industrial power systems

Specifications

  • 4.5V to 60V operating input range
  • 1A continuous output current
  • 250mΩ/45mΩ internal power MOSFETs
  • Configurable frequency up to 2.2MHz
  • 180° out-of-phase SYNC out clock
  • 40µA quiescent current
  • 2µA shutdown mode current
  • FB tolerance
    • 1% at room temperature
    • 2% at full temperature
  • Internal 0.45ms soft start

Typical Application

Application Circuit Diagram - Monolithic Power Systems (MPS) MPQ4571 Synchronous Step-Down Converters

Development Tools

Monolithic Power Systems (MPS) EVQ4571-QB-00A Buck Converter Evaluation Board

Demonstrates the capabilities of the MPQ4571 / MPQ4571-AEC1 synchronous step-down converters.

Learn MoreMonolithic Power Systems (MPS) EVQ4571-QB-00A Buck Converter Evaluation Board について View ProductsMonolithic Power Systems (MPS) EVQ4571-QB-00A Buck Converter Evaluation Board に関連

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Learn MoreMonolithic Power Systems (MPS) MP4571 High-Efficiency Synchronous Buck Converters について View ProductsMonolithic Power Systems (MPS) MP4571 High-Efficiency Synchronous Buck Converters に関連

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公開: 2020-10-29 | 更新済み: 2024-07-12