The NX5P3090 is a precision adjustable current-limited power switch forUSB PD application. The device includes under voltage lockout, over-temperatureprotection, and reverse current protection circuits to automatically isolate the switchterminals when a fault condition occurs. The 29V tolerance on VBUS pin ensures thedevice is able to work on a USB PD port; a current limit input (ILIM) pin defines theover-current limit threshold; an open-drain fault output (FAULT) indicates when a faultcondition has occurred.

The over-current limit threshold can be programmed from 400 mA to3.3 A, using an external resistor between the ILIM pin and GND pin. In the over currentcondition, the device will clamp the output current to the value set by ILIM and keepthe switch on while assert the FAULT flag. To minimize current surges during turn on andturn off, the device has built in soft start which controls the power switch rise andfall time.

Surge protection has been integrated in the device to enhance system robustness. Theenable input includes integrated logic level translation making the device compatiblewith lower voltage processors and controllers.

NX5P3090 is offered in a 12 bump 1.35 × 1.65 mm, 0.4 mm pitchWLCSP package.

• VINT supply voltage range from 2.5 V to 5.5 V
• 29 V Tolerance on VBUS and EN Pin
• ISW 3.3 A maximum load current
• Adjustable current limit from 400 mA to 3.3 A
• Clamped current output in over-current condition
• Very low ON resistance: 30 mΩ (typical)
• VBUS quick discharge after EN disable with time out control
• Active High EN pin with internal pull down resistor
• All time Reverse Current Protection
• Over Temperature Protection
• Surge protection: IEC61000-4-5 exceeds ±100 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 ambient temperature

• USB PD and Type C port/hubs
• Tablet and Smart phone
• Notebook and Ultrabook