MAX14626
PRODUCTIONHigh-Voltage Reverse-Input-Capable 4–20mA Current Loop Protector
Industry's First Integrated 4mA to 20mA Current Loop Protector for Industrial Analog Input Modules
Part Details
- 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
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.
Applications
- Industrial Current Loop Control
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareEvaluation Kits
Evaluation Kit for the MAX14626
Reference Designs
4-Channel Analog Input/Output
Part Used
Design & Integration Tools
16-Bit Four-Channel Analog Input Micro PLC Card