500mA–3A Automotive Hi-Speed USB Protector with USB Host-Charger Port Detection

The MAX16919 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 includes integrated circuitry to enable fast-charging for consumer devices adhering to 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 and 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, 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.

Applications

* Automotive USB Protection

* 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 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