1.

General description

The NX5P2553 is a precision adjustable current-limited power switch. The device

includes undervoltage lockout, overtemperature, and reverse bias protection circuits

designed to isolate the switch terminals when a fault condition occurs. It also has an

overcurrent protection circuit to limit the output current. The device features two power

switch terminals, one input (VIN), and one output (VOUT). It also consists of a current limit

input (ILIM) for defining the overcurrent limit, an open-drain fault output (FAULT) to

indicate when a fault condition has occurred, and an enable input (EN) to control the state

of the switch.

The overcurrent limit threshold can be programmed between 85 mA and 1.8 A using an

external resistor between the ILIM and GND pins. The device has built-in soft-start. This

feature controls the output rise time by minimizing current surges when the switch is

enabled.

Designed for operation from 2.5 V to 5.5 V, it is used in power domain isolation

applications to protect from out of range operation. The enable input includes integrated

logic level translation making the device compatible with lower voltage processors and

controllers.

2.

Features and benefits



6 % current-limit accuracy at 1.8 A (typical)

 (typical) for TSOP6 package

s typical)

capacitance)

40 Cto+85 C ambient temperature

NX5P2553

Precision adjustable current-limited power switch

Rev. 1 — 6 July 2015

Product data sheet