MPQ4481 36 V, 3 A, Step-Down Converter

Monolithic Power Systems’ MPQ4481 achieves 3 A of output current with excellent load and line regulation over a wide input supply range

Image of Monolithic Power Systems' MPQ4481, 36 V, 3 A Step-Down ConverterMonolithic Power Systems’ MPQ4481 integrates a monolithic, step-down, switch-mode converter with a single USB current-limit switch and Type-C 5 V @ 3 A mode configuration channel for the USB port. The MPQ4481 achieves 3 A of output current with excellent load and line regulation over a wide input supply range. The output of the USB switch is current-limited. The USB port supports DCP schemes for battery charging specification (BC1.2), divider mode, 1.2 V/1.2 V mode, and USB Type-C™ 5 V @ 3 A DFP mode without the need for outside user interaction. Full protection features include hiccup current limiting, output overvoltage protection (OVP), and thermal shutdown. The MPQ4481 requires a minimal number of readily available, standard, external components and is available in a QFN-26 (5 mm x 5 mm) package.

Features
  • Low dropout mode
  • Accurate USB output current limit
  • Programmable line drop compensation
  • Wide 6 V to 36 V operating input range
  • Supports USB Type-C 5 V @ 3 A DFP mode
  • Selectable VOUT: 5.1 V, 5.17 V, and 5.3 V
  • 15 mΩ low RDS(ON) internal USB power MOSFETs
  • Supports DCP schemes for BC1.2, divider mode, and 1.2 V/1.2 V mode
  • 25 mΩ/20 mΩ low RDS(ON) internal buck power MOSFETs
  • EN control for USB
  • Fault indication for USB
  • Available in AEC-Q100 Grade 1
  • Up to 2.2 MHz operation frequency
  • Load shedding versus temperature 
  • ±8 kV HBM ESD rating for USB, DP, DM
  • Available in a QFN-26 (5 mm x 5 mm) package
  • Forced continuous conduction mode (CCM) operation 
Applications
  • USB-dedicated charging ports (DCP)
  • USB Type-C charging port

MPQ4481 36 V, 3 A, Step-Down Converter

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
MPQ4481GU-AEC1-Z datasheet linkSTEP DOWN CONVERTER 5V, 3A QFN-2MPQ4481GU-AEC1-ZSTEP DOWN CONVERTER 5V, 3A QFN-25000 - Immediate
MPQ4481GU-AEC1-Z product page link
MPQ4481GU-AEC1-P datasheet linkSTEP DOWN CONVERTER 5V, 3A QFN-2MPQ4481GU-AEC1-PSTEP DOWN CONVERTER 5V, 3A QFN-20MPQ4481GU-AEC1-P product page link
Published: 2018-11-08