General Description

The MAX14626 current loop protector features a current limit switch to prevent damage to the sensor devices due to faulty current loop conditions. The current-limit switch features a 25I (typ) on-resistance and operates from a +2.3V to +36V input voltage range. The accurate current limit is set to 30mA, making the part ideal for protecting the sensor reading devices.

The MAX14626 handles an overcurrent event in a continuous current-limit mode. Additional safety features include thermal shutdown to prevent overheating and reverse-input blocking to protect from being reverse connected into the sensor.

The device is available in a tiny 6-pin (3mm x 3mm), TDFN exposed pad package and is specified over the -40NC to +85NC extended temperature range.

Benefits and Features

♦ High Performance

   Low On-Resistance 25I (typ)

   Accurate Q10 Current Limit

   +2.3V to +40V Wide Supply Voltage Range

   Low Operating Current

   Ultra-Low Temperature Coefficient

♦ Robust Protection for Sensors

   Avoids Power Dissipation Issues Compared to

   Discrete Solutions

   Thermal Shutdown

   Reverse Input Protection

♦ Saves Space in Compact Systems

   Eliminates Need for Discrete PTC Poly Switch,

   Zener Diodes, and Resistors

   3mm x 3mm, 6-Pin TDFN Package

Applications

  Industrial Current Loop Control