Maxim Integrated 3A Automotive Hi-Speed USB Protectors

Maxim Integrated 3A Automotive Hi-Speed USB Protectors

Maxim Integrated 3A Automotive Hi-Speed USB Protectors provide high-ESD and short-circuit protection for low-voltage internal USB data and USB power line. The protectors are ideal for use in automotive radio, navigation, connectivity, and USB hub applications. The devices support Hi-Speed USB (480Mbps) and full-speed USB (12Mbps) operation. The devices also include integrated circuitry to enable fast charging for consumer devices that adhere to either the Apple® method or the Hi-Speed USB host-charger port-detection protocol and support USB on-the-go (OTG).


  • 900MHz bandwidth USB 2.0 data switches
  • Industry-leading RDS(ON) minimizes voltage drop on a bus line to help meet USB voltage specifications at device connector
    • Current-limited 31mΩ (typ) BUS switch with high capacitive load capability
  • Robust overvoltage and ESD protection for the automotive environment saves on external protection components
    • Short-to-battery and short-to-GND protection on protected HVBUS output
    • Short-to-battery and short-to-HVBUS protection on protected HVD+ and HVD- outputs
    • Two 4.0Ω (typ) RON USB 2.0 data switches
    • Integrated overcurrent and short-circuit auto retry
    • High ESD protection (HVD+, HVD-, HVBUS)
      • ±15kV human body model
      • ±15kV IEC 61000-4-2 air gap
      • ±8kV IEC 61000-4-2 contact
    • 20ms fault-blanking timeout period
  • Automatic transitioning of charge modes through intelligent state machine for seamless device integration
    • Integrated Apple iPhone 1.0A dedicated charging mode
    • Integrated Apple iPad 2.1A dedicated charging mode
    • USB-IF BC1.2 charging downstream port (CDP) and dedicated charging port (DCP) modes
    • Chinese telecommunication industry-standard YD/T 1591-209
    • USB on-the-go (OTG) support
  • AEC-Q100 qualified

Block Diagram

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Mike is the founder and editor of, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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