EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX14626 High-Voltage Reverse-Input-Capable 4mA20mA Current Loop Protector General Description Benefits and Features The MAX14626 current loop protector features a current- High Performance limit switch to prevent damage to the sensor devices due Low On-Resistance 25 (typ) to faulty current loop conditions. The current-limit switch Accurate 10% Current Limit +2.3V to +40V Wide Supply Voltage Range features a 25 (typ) on-resistance and operates from a +2.3V to +36V input voltage range. The accurate current Low Operating Current Ultra-Low Temperature Coefficient limit is set to 30mA, making the part ideal for protecting the sensor reading devices. Robust Protection for Sensors The MAX14626 handles an overcurrent event in a Avoids Power Dissipation Issues Compared to Discrete Solutions continuous current-limit mode. Additional safety features include thermal shutdown to prevent overheating and Thermal Shutdown Reverse Input Protection reverse-input blocking to protect from being reverse connected into the sensor. Saves Space in Compact Systems Eliminates Need for Discrete PTC Poly Switch, The device is available in a tiny 6-pin (3mm x 3mm), Zener Diodes, and Resistors TDFN exposed pad package and is specified over the 3mm x 3mm, 6-Pin TDFN Package -40C to +85C extended temperature range. Applications Industrial Current Loop Control Ordering Information appears at end of data sheet. Typical Operating Circuit 420mA CURRENT MAX14626 SENSOR IN OUT (420mA) CURRENT R IA LOAD ADC CONTROL AND REF SUPPLY CURRENT LIMIT PROTECTION GATE CONTROL GND 19-6257 Rev 2 3/20MAX14626 High-Voltage Reverse-Input-Capable 4mA20mA Current Loop Protector Absolute Maximum Ratings (All voltages referenced to GND.) Operating Temperature Range ......................... -40C to +125C IN to GND ...............................................................-40V to +40V Maximum Junction Temperature .....................................+150C OUT to GND ..........................................................-0.3V to +40V Storage Temperature Range ............................ -65C to +150C Current into IN ..................................................Internally Limited Lead Temperature (soldering, 10s) .................................+300C Current into OUT ..............................................................100mA Soldering Temperature (reflow) .......................................+260C Continuous Power Dissipation (T = +70C) A TDFN (derate 23.8mW/C above +70C) ...............1904.8mW Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Package Information 6 TDFN Package Code T633+2 Outline Number 21-0137 Land Pattern Number 90-0058 THERMAL RESISTANCE, FOUR-LAYER BOARD Junction to Ambient ( ) 42C/W JA Junction to Case ( ) 9C/W JC For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a +, , or - in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. DC Electrical Characteristics (I = 50A to 24mA, T = -40C to +85C, R = 25 to 1k, unless otherwise noted. Typical values are at I = 10mA, R = IN A LOAD IN LOAD 250, and T = +25C.) (Note 1) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS SUPPLY VOLTAGE Operating Start Voltage V I = 20A 2.3 V IN ST IN Operating IN Voltage V 36 V IN Operating IN to OUT Drop I = 24mA 2.8 V IN Voltage Quiescent Current (Normal I R 250 40 56 A Q LOAD Mode: 420mA) Quiescent Current (Current-Limit I I = 30mA, V = 5V, R = 25 65 A Q OUT IN LOAD Mode: Current > 25mA) Reverse Current I V = -36V, V = 0V, current into OUT 0.01 0.3 A REV IN OUT IN to OUT Switch On-Resistance R V = 4V, I = 16mA 25 45 ON IN OUT Forward Current Limit I V = 36V 27 30 33 mA LIM IN Maxim Integrated 2 www.maximintegrated.com