Automotive Hi-Speed USB 2.0 Protector

Tiny Solution for Module-to-Module Connections with Best-in-Class Eye Diagram and Integrated Protection

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The MAX20046 device 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 USB Hi-Speed (480Mbps), USB full-speed (12Mbps), and USB low-speed (1.5Mbps) operation.

The short-circuit protection features include short-to-battery on the protected HVBUS, as well as short-to-HVBUS and short-to-battery on the protected HVD+ and HVD-. Short-to-GND and overcurrent protection are also provided on the protected HVBUS output to protect the internal BUS power rail from overcurrent faults.

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

The device features a 500mΩ (max) USB power switch, and two low on-resistance (RON), USB 2.0 data switches. This device also features an enable input, fault output, 10ms fault-recovery time, 1ms overcurrent-blanking time, and integrated overcurrent autoretry.

The MAX20046 is available in a 12-pin lead-free, TQFN-EP package and operate over the -40°C to +105°C temperature range.
MAX20046: Typical Operating Circuit MAX20046: Typical Operating Circuit Enlarge+

Key Features

  • Low 23mA/45mA (MAX20046GTCA/V+) or 60/120mA (MAX20046GTCC/V+) Current Threshold for Module-to-Module Applications
  • Targeted Features for Optimized USB Performance
    • Two RON 3.3Ω (typ) USB 2.0 Data Switches
    • 480Mbps, 12Mbps or 1.5Mbps USB 2.0 Operation
    • 9ms Fault-Recovery Time
    • 1ms Overcurrent Blanking Time
    • 5.7V (typ) Fixed HVBUS Protection Trip Threshold
  • Robust for the Automotive Environment
    • Short-to-Battery and Short-to-GND Protection on Protected HVBUS Output
    • Short-to-Battery and Short-to-HVBUS Protection on HVD+ and HVD- Outputs
    • Tested to ISO 10605 and IEC 61000-4-2 ESD Standards
    • 12-Pin (3mm × 3mm) TQFN-EP Package
    • -40°C to +105°C Operating Temperature Range
    • AEC-Q100 Qualified


  • Automotive USB Protection

See parametric specs for Current Limit and USB Power Switches (80)

Part NumberUSBPower SwitchesCurrent Limit
Current Limit
Fault IndicatorCurrent Limit Accuracy
Current Limit Set ByLowest Adj. Setting
Oper. Temp.
minmaxtypminmaxSee Notes
MAX20046 Yes123120Yes12.5
Pin Select
Preset to +105
$1.01 @1k

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.

MAX20046EVKIT: Evaluation Kit for the MAX20046
Request Reliability Report for: MAX20046 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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