MAX16969:500mA–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

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.

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
Applications/Uses
  • Automotive USB Protection
  • Rapid Charging for Apple-Compliant Devices
Parametrics
Part NumberUSBPower SwitchesData SwitchesCurrent Limit
(mA)
Current Limit
(mA)
Fault IndicatorCurrent Limit Accuracy
(%)
Current Limit Set ByLowest Adj. Setting
(A)
RON
(Ω)
VSUPPLY
(V)
VSUPPLY
(V)
Supported Charging ConfigurationsOper. Temp.
(°C)
Package/Pins
minmaxtypminmax
MAX16969Yes115003000Yes20Resistor0.670.0224.755.25BC1.1
iPod/iPhone
-40 to +105See Data Sheet