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500mA–3A Automotive Hi-Speed USB Protector with Apple iPod Fast-Charge Detection and USB Host-Charger Port Detection

Fully Integrated Automotive-Grade USB Protector with Apple and USB Host Charger Detection
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Not Recommended for New Designs


The MAX16969 provides high-ESD and short-circuit protection for the low-voltage internal USB data and USB power line in automotive radio, navigation, connectivity, and USB hub applications. The device supports both Hi-Speed USB (480Mbps) and full-speed USB (12Mbps) operation. In addition, the device also includes integrated circuitry to enable fast-charging for consumer devices adhering to either the Apple method or the Hi-Speed USB host-charger port-detection protocol.

The short-circuit protection features include short-to-battery on the protected HVBUS, HVD+, and HVD- outputs, as well as short-to-HVBUS on the protected HVD+ and HVD- outputs. The device is capable of a short-to-battery condition of up to +18V. Short-to-GND and overcurrent protection are also provided on the HVBUS output to protect the internal BUS power rail from overcurrent faults.

The device features high-ESD protection to ±15kV Air Gap method and ±8kV Contact method on all protected HVBUS, HVD+, and HVD- outputs.

The device features two low 4.0Ω on-resistance Hi-Speed USB switches, a current-limited low-voltage 22mΩ BUS switch, and provides an integrated high-voltage external power-switch controller. The BUS switch can start up into large capacitive noncompliant USB loads. The device also features an enable input, a fault output, integrated Apple iPod®/iPhone® fast-charging termination resistors, and an integrated host-charger port-detection circuit adhering to the USB 2.0 battery charging specification.

The device is available in a 16-pin QSOP package, and operates over -40°C to +105°C temperature range.

Data Sheet

Key Features

  • Two 4.0Ω (typ) RON USB 2.0 Data Switches
  • Current-Limited 22mΩ (typ) BUS Switch with High-Capacitive Load Capability
  • 480Mbps or 12Mbps USB 2.0 Operation
  • 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
  • 20ms Fault-Blanking Timeout Period
  • Integrated Overcurrent and Short-Circuit Autoretry
  • Integrated Apple iPod Fast-Charge Termination Resistors
  • Integrated USB Host-Charger Port-Detection Circuitry
  • High ESD Protection (HVD+, HVD-, HVBUS)
    • ±15kV Human Body Model
    • ±15kV IEC 61000-4-2 Air Gap
    • ±8kV IEC 61000-4-2 Contact
  • 16-Pin (3.90mm x 4.94mm) QSOP Package
  • -40°C to +105°C Operating Temperature Range
  • AEC-Q100 Qualified


  • Automotive USB Protection
  • Rapid Charging for Apple-Compliant Devices

Key Specifications:

Current Limit and USB Power Switches
Part Number USB Power Switches Data Switches Current Limit
Current Limit
Fault Indicator Current Limit Accuracy
Current Limit Set By Lowest Adj. Setting
Supported Charging Configurations Oper. Temp.
Min. Max. typ min max
MAX16969  Yes 1 1 500 3000 Yes 20 Resistor 0.67 0.022 4.75 5.25
-40 to +105
See All Current Limit and USB Power Switches (83)

Pricing Notes:

This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

More Information

New Product Press Release   2012-02-01 ]

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Document Ref.: 19-5572 Rev 4; 2012-02-10
This page last modified: 2012-04-25