General description

The NX5P3363/Q100 is a precision adjustable current-limited power switch for USB PD application. The

device includes undervoltage lockout, overtemperature protection, and reverse current protection circuits to

automatically isolate the switch terminals when a fault condition occurs. The 29 V tolerance on VBUS pin

ensures the device is able to work on a USB PD port; a current limit input (ILIM) pin defines the overcurrent limit

threshold; an open-drain fault output (FLT) indicates when a fault condition has occurred.

The overcurrent limit threshold can be programmed from 400 mA to 3.3 A, using an external resistor between

the ILIM pin and GND pin. In the overcurrent condition, the device clamps the output current to the value set by

ILIM and keeps the switch on while asserting the FLT flag.

To minimize current surges during normal turn on, the device has built-in soft start by limiting the power switch

turn on slew rate. However, user can disable the soft start and request a fast output by pulling FO pin HIGH.

A fast recovery reverse current protection (RCP) circuit has been added to the switch to prevent reverse

current flowing back to power source at all times. When exiting from reverse current protection state, the power

MOSFET turns on within 50 μs. The fast RCP recovery ensures the voltage on VBUS doesn’t drop too much in

a power source swap application.

NX5P3363/Q100 is offered in a 2.2 x 2.2 mm, 16 bump WLCSP package.

Features and benefits

• VIN supply voltage range from 4.0 V to 5.5 V

• All time reverse current protection with ultra fast RCP recovery

• Adjustable current limit from 400 mA to 3.3 A

• Clamped current output in overcurrent condition

• 29 V high voltage tolerance on VBUS pin

• Low ON resistance of the power FETs: 35 mΩ (typical) in total

• Surge protection: IEC61000-4-5 exceeds ±80 V on VBUS

• Over temperature protection

• Qualified in accordance with AEC-Q100 Grade 3 compliance

• Safety approvals

– UL 62368-1, 2nd edition, file no. 20170804-E470128

– IEC 62368-1, 2nd edition, file no. DK-65509-UL

• 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) exceeds 500 V

• Specified from -40 °C to +85 °C ambient temperature

Applications

• Notebook, ultrabook and desktop

• USB PD and Type C port/hubs

• Tablet and smart phone