Automotive Hi-Speed USB 2.0 Protector

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.

Applications

* Automotive USB Protection

* 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