MPQ4491M-AEC1

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2.5A, 36V, Frequency Selectable Step-Down Converter with Smart USB Charging Port for Automotive, AEC-Q100 Qualified

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Product Description

The MPQ4491M-AEC1 integrates a monolithic, step-down, switch-mode converter and a single USB current-limit switch with charging port identification circuits. It achieves 2.5A of continuous output current with excellent load and line regulation over a wide input supply range. The output of the USB switch is current limited. The MPQ4491M-AEC1 has a USB dedicate charging port (DCP) which supports battery charging specification 1.2 (BC1.2), divider mode, and 1.2V/1.2V mode without the need of outside user interaction. The output voltage has programmable line drop compensation. Full protection features include hiccup current limiting, output over-voltage protection (OVP), and thermal shutdown. The MPQ4491M-AEC1 requires a minimal number of readily available, standard, external components and is available in QFN-26 (4mmx4mm) and QFN-25 (4mmx4mm) packages.

Product Features

  • EMI Reduction Technique
  • 14V Typical Operating Input Voltage
  • 36V Max. Operating Input Voltage
  • Fixed 5V Output Voltage with Line Drop Compensation
  • Accurate USB Output Current Limit
  • 40mO/32mO Low-RDS(ON) Internal Buck Power MOSFETs
  • 24mO Low-RDS(ON) Internal USB Power MOSFETs
  • 350kHz/250kHz/150kHz Frequency Selectable
  • Programmable Line Drop Compensation
  • Output Over-Voltage Protection (OVP)
  • Hiccup Current Limit
  • Supports DCP Schemes for BC1.2, Divider Mode, and 1.2V/1.2V Mode
  • ±8kV HBM ESD Rating for USB, DP, and DM
  • Available in QFN-26 (4mmx4mm) and QFN-25 (4mmx4mm) Packages
  • Available in AEC-Q100 Grade 1

Parametrics

  • fsw (max) (kHz)350
  • Vin (min) (V)7
  • Vin (max) (V)36
  • Iout (max) (A)2.5
  • Isw Limit (typ) (A)4
  • Max Duty Cycle (%)0.88
  • Iq (typ) (mA)1.6
  • Regulated Outputs1
  • Vout (max) (V)5
  • Vout (min) (V)5
  • mps_Status2
  • Mps StatusActive
  • GradeAutomotive
  • PackageQFN-25 (4x4)
  • Control ModeCurrent Mode
  • Common FeaturesSynchronous Rectification
  • Special FeaturesEMI Reduction Technique, Fixed Output, Output Line Drop Compensation, Programmable Frequency, Supports DCP Scheme

Evaluation Kit

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Kit details

The EVQ4491M-RE-00A Evaluation Board is designed to demonstrate the capabilities of MPS’ MPQ4491M. MPQ4491M integrates a monolithic step-down switch mode converter and one USB current limit switch with charging port identification circuit. It achieves 2.5A continuous output current over a wide input supply range with excellent load and line regulation.

The output of USB switch is current limited. MPQ4491M provides a USB Dedicate Charging Port (DCP) which supports Battery Charging Specification 1.2 (BC1.2), the Divider Mode, and 1.2V/1.2V Mode without the need of outside user interaction.

US$ 25.00 + tax