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NX20P0477 - USB Type-C CC smart protection

General Description

NX20P0477 is a single-chip USB Type-C (USB-C) port overvoltage protection solution integrating a corrosion prevention algorithm from moisture.

CC1/CC2 pins in the system side are protected from 28 V short to VBUS.

USB-C allows VBUS voltage to increase up to 20 V through Power delivery protocol.

Key Features

  • USB Type-C CC1 and CC2 short protection to VBUS.
  • CON_CC1 / CON_CC2: 28VDC AMR.
  • Rd clamp circuit in CON_CC1/CON_CC2 in dead battery condition.
  • Smart corrosion prevention scheme with low current source.
  • 250 mΩ Low RDSon switch.
  • Robust ESD immunity for CON_CC1/CON_CC2.
  • IEC 61000-4-2 contact discharge: 6 kV.
  • IEC 61000-4-2 air discharge: 8 kV.
  • +/-40 V surge protection on CON_CC1/CON_CC2 NXP Semiconductors NX20P0477 US.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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NX20P0477 USB Type-C CC smart protection Rev. 1.0 — 3 February 2020 Product data sheet 1 General description NX20P0477 is a single-chip USB Type-C (USB-C) port overvoltage protection solution integrating a corrosion prevention algorithm from moisture. CC1/CC2 pins in the system side are protected from 28 V short to VBUS. USB-C allows VBUS voltage to increase up to 20 V through Power delivery protocol. CC1/2 pins can be shorted to VBUS due to mechanical twisting and sliding of the connector since USB-C connector contact pins are 25 % closer to each other than a micro USB connector. Moisture or fine dust may also cause the 20 V VBUS pin to be shorted to adjacent pins. NX20P0477 enables CC pins to be more robust in even abnormal conditions.