The NX5P3090 is a precision adjustable current-limited power switch for
USB PD application. The device includes under voltage lockout, over-temperature
protection, and reverse current protection circuits to automatically isolate the switch
terminals when a fault condition occurs. The 29V tolerance on VBUS pin ensures the
device is able to work on a USB PD port; a current limit input (ILIM) pin defines the
over-current limit threshold; an open-drain fault output (FAULT) indicates when a fault
condition has occurred.
The over-current 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 over current
condition, the device will clamp the output current to the value set by ILIM and keep
the switch on while assert the FAULT flag. To minimize current surges during turn on and
turn off, the device has built in soft start which controls the power switch rise and
Surge protection has been integrated in the device to enhance system robustness. The
enable input includes integrated logic level translation making the device compatible
with lower voltage processors and controllers.
NX5P3090 is offered in a 12 bump 1.35 × 1.65 mm, 0.4 mm pitch