Logic-Controlled High-Side Power Switch

NX5P2190UK

The NX5P2190 is an advanced power switch with adjustable current limit. It includes under-voltage and over-voltage lockout, over-current, over-temperature, reverse bias and in-rush current protection circuits. These circuits are designed to isolate a voltage source from a VBUS interface pin automatically when a fault occurs. The device features two power switch terminals, one input (VINT) and one output (VBUS). A current limit input (ILIM) defines the over-current and in-rush current limit, and a voltage detect output (VDET) monitors the voltage level on VBUS. An open-drain fault output (FAULT) indicates when a fault condition occurs. An enable input (EN) controls the state of the switch. When EN is set LOW the device enters a low-power mode, disabling all protection circuits except the under-voltage lockout. The low-power mode can be entered at anytime unless the over temperature protection circuit has been triggered.

Designed for operation from 3 V to 5.5 V, the NX5P2190 is a complete solution for power domain isolation and protection applications. The enable input includes integrated logic level translation making the device compatible with lower voltage processors and controllers.

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Block Diagram

NX5P2190 Block Diagram

NX5P2190 Block Diagram
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Features

  • Wide supply voltage range from 3 V to 5.5 V
  • 30 V tolerant on VBUS
  • ISW maximum 2 A continuous current
  • Very low ON resistance: 100 mΩ (maximum) at a supply voltage of 4.0 V
  • Low-power mode (ground current 20 μA typical)
  • 1.8 V control logic
  • Soft start turn-on slew rate
  • Protection circuitry
    • Over-temperature protection
    • Over-current protection with low current output mode
    • Reverse bias current/Back drive protection
    • Over-voltage lockout
    • Under-voltage lockout
    • Analog voltage limited VBUS monitor path
  • ESD protection:
    • HBM JDS-001 Class 2 exceeds 2 kV
    • IEC61000-4-2 contact discharge exceeds 8 kV for pins VBUS
  • Specified from ‑40 °C to +85 °C

Target Applications

  • USB OTG applications

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