Automotive Hi-Speed USB 2.0 Protector

 

Part Number	Replacement	Explanation

Description

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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 (R_ON), 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 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 R_ON 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

Applications/Uses

• Automotive USB Protection