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MAX14626

Maxim
Part Number MAX14626
Manufacturer Maxim
Description High-Voltage Reverse-Input-Capable
Published Jun 28, 2012
Detailed Description MAX14626 EVALUATION KIT AVAILABLE High-Voltage Reverse-Input-Capable 4–20mA Current Loop Protector General Description...
Datasheet PDF File MAX14626 PDF File

MAX14626
MAX14626

Overview
MAX14626 EVALUATION KIT AVAILABLE High-Voltage Reverse-Input-Capable 4–20mA Current Loop Protector General Description The MAX14626 current loop protector features a currentlimit switch to prevent damage to the sensor devices due to faulty current loop conditions.
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 Benefits and 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 Ordering Information appears at end of data sheet.
Typical Operating Circuit SENSOR (4–20mA) CURRENT IN 4–20mA CURRENT MAX14626 REF SUPPLY CONTROL AND PROTECTION OUT CURRENT LIMIT GATE CONTROL RLOAD IA ADC GND 19-6257; Rev 1; 9/17 MAX14626 High-Voltage Reverse-Input-Capable 4–20mA Current Loop Protector Absolute Maximum Ratings (All voltages referenced to GND.
) IN to GND.
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-40V to +40V OUT to GND.
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-0.
3V to +40V Current into IN.
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