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Smart Protection Switches with Ideal Diode True Reverse Current Blocking for Type-C PD Applications

Smart Protection Switches
Smart Protection Switches

Alpha and Omega Semiconductor has announced a new Type-C Power Delivery high voltage sink protection switch using ideal diode methodology for reverse current protection. New AOZ13984DI-02 and AOZ13987DI-02 are smart protection switches in a single small thermally enhanced 3mm x 3mm DFN package. These new devices offer low RDS(ON) (20mohm) back-to-back MOSFETs to block any reverse current under fault conditions and are capable of up to 28V absolute maximum voltage. Moreover, these products use AOS’s advanced co-packaging technology, combining a high-performance IC with protection features and our latest high SOA Trench MOSFET.


These smart protection switches feature Ideal Diode True Reverse Current Blocking (IDTRCB), allowing no reverse current at any conditions. They also feature 28V absolute maximum voltage with startup SOA management and other protections.



  • Operating Range: 3.4V to 23V

  • 28V Absolute Maximum rating

  • On-Resistance: 20mΩ for AOZ13987DI-02 and 33mΩ for AOZ13984DI-02 back-to-back MOSFETs

  • Protection features: Ideal Diode True Reverse Current Blocking, Under-Voltage Lock-Out, Over-Voltage Protection, Thermal Shutdown Protection, Programmable Soft-Start, Startup SOA Management

  • Package: 3mm x 3mm DFN-12L



  • Thunderbolt/USB Type-C PD power switch

  • Notebook computers

  • Docking station/dongles

  • Power ORing



The AOZ13987DI-02 and AOZ13984DI-02 are now available in production quantities with a lead-time of 14 weeks. The unit price for AOZ13987DI-02 starts at $0.95 and $0.84 for AOZ13984DI02 in 1,000-unit quantities.

Component Datasheet

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