Description

The ZXCT1032 is a high-side current monitor that drives a PMOS or PNP transistor to provide in-rush current limit and over-current protection. The ZXCT1032 includes a high accuracy high-side current monitor, a start-up timer and a re-try inhibit timer.

The ZXCT1032 takes the voltage developed across a current shunt resistor and compares this with an externally set trip point. It works in three modes:

• Linear soft-start

• Over-current detector

• Over-current disconnect/fuse

Features

• Accurate high-side current sensing

• User defined and dynamically adjustable trip current

• Load switch control

• Fault flag logic output

• User defined ramp and inhibit timers

• SO8 package

• Temperature range -40 to 85°C

Applications

• Electronic fuse

• Short circuit protected supply feed

• Hot swap

• Power over twisted pair