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MAX14626：High-Voltage Reverse-Input-Capable 4–20mA Current Loop Protector

Industry's First Integrated 4mA to 20mA Current Loop Protector for Industrial Analog Input Modules

The MAX14626 current loop protector features a current-limit switch to prevent damage to the analog input module from sensor failure. The current-limit switch features a 25Ω (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 -40°C to +85°C extended temperature range.

Key Features High Performance Low On-Resistance 25Ω (typ) Accurate ±10% 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

MAX14626: Typical Operating Circuit Applications/Uses Industrial Current Loop Control

DataSheet

Parametrics

Design kits & evaluation modules

• MAX14626EVKIT

Quality and Environmental Data

• MAX14626.pdf

Ordering Information