The NX20P5090 is an advanced 5.0 A Uni-directional power switch for USB PD. It includes undervoltage lockout, over voltage lockout, reverse current protection and over-temperatureprotection circuits, it is designed to automatically isolate the power switch terminalswhen a fault condition occurs. Both VBUS and VINT pin have 29 V tolerance in shutdownmode, two NX20P5090s can be used in parallel to support dual power inputs connecting tosame charging circuit.

The device has a default 23 V over voltage protection threshold, and the OVP thresholdcan be adjusted by using external resistors on OVLO pin. A 15 ms debounce time isdeployed every time before the device is switched ON, followed by a soft start to limitthe inrush current.

Designed for operation from 2.5 V to 20.0 V, it is used in USB PD power domain isolationapplications to offer essential protection and enhance reliability.

NX20P5090 is offered in a small 15 bumps 1.6 × 2.6 mm, 0.5 mm pitch WLCSP package.

• All time two level reverse-current protection
• 29 V tolerance on both VBUS and VINT pin
• Wide supply voltage range from 2.5 V to 20.0 V
• ISW maximum 5 A continuous current
• 30 mΩ (typical) Low ON resistance
• Default 23 V OVLO threshold and adjustable by external resistor
• Built in Slew rate control for inrush current limit
• Active Low EN pin with built-in pull down resistor
• Open-drain ACK pin for power good indication
• Protection circuitry:
  • Over-Temperature Protection
  • Over-Voltage Lockout
  • Under-voltage Lockout
  • Reverse Current Protection
• Surge protection: IEC61000-4-5 exceeds ±80 V on VBUS
• ESD protection:
  • IEC61000-4-2 contact discharge exceeds 8 kV on VBUS
  • HBM ANSI/ESDA/JEDEC JS-001 Class 2 exceeds 2 kV
  • CDM AEC standard Q100-01 (JESD22-C101E)
• Specified from -40 °C to +85 °C

• Smart and feature phones
• Tablets, eBooks