MLX92231LSE-AAA-010-RE

MLX92231-AAA-xxx 3-Wire Hall Effect Switch Features and Benefits Application Examples Wide operating voltage range: from 2.7V to 24V Automotive, Consumer and Industrial Accurate switching thresholds Solid-state switch Reverse Supply Voltage Protection Brake sensor Output Current Limit with Auto-Shutoff Clutch sensor Under-Voltage Lockout Protection Sunroof/Tailgate opener Thermal Protection Steering Column Lock Traceability with integrated unique ID Open / Close detection High ESD rating / Excellent EMC performance Thin SOT23 3L Green Compliant package Ordering Information Part No. Temperature Code Package Code Comment MLX92231LSE-AAA-xxx-RE L (-40C to 150C) SE (TSOT-3L) RE (Reel) MLX92231LUA-AAA-xxx-BU L (-40C to 150C) UA (TO-92) BU (Bulk) 1 Functional Diagram In addition to that an ID has been integrated on the IC to have a complete traceability throughout the VDD process flow. Voltage Regulator Under- with Reverse Polarity Voltage The included voltage regulator operates from 2.7 to Protection Lockout 24V, hence covering a wide range of applications. Temperature Bop/Brp Thermal With the built-in reverse voltage protection, a serial Compensation reference Protection resistor or diode on the supply line is not required so that even remote sensors can be specified for low Switched OUT Open-Drain voltage operation down to 2.7V while being reverse Hall Output Plate CDS voltage tolerant. Amplifier In the event of a drop below the minimum supply Current Control Limit & voltage during operation, the under-voltage lock-out Auto-Shutoff protection will automatically freeze the device, preventing the electrical perturbation to affect the GND magnetic measurement circuitry. The output state is therefore only updated based on a proper and accurate magnetic measurement result. 2 General Description The open drain output is fully protected against short- The Melexis MLX92231 is a Hall-effect unipolar circuit with a built-in current limit. An additional switch designed in mixed signal CMOS technology. automatic output shut-off is activated in case of a prolonged short-circuit condition. A self-check is then The device integrates a voltage regulator, Hall sensor periodically performed to switch back to normal with advanced offset cancellation system, automotive operation if the short-circuit condition is released. qualified EEPROM and an open-drain output driver, The on-chip thermal protection also switches off the all in a single package. output if the junction temperature increases above an abnormally high threshold. It will automatically Based on the existing robust 922xx platform, the recover once the temperature decreases below a magnetic core has been equipped with a non-volatile safe value. memory that is used to accurately trim the switching thresholds and define the needed output magnetic characteristics (TC, Bop, Brp, Output pole functionality). 390109223101 REV 2 Page 1 of 12 Sept/14 MLX92231-AAA-xxx 3-Wire Hall Effect Switch Table of Contents 1 Functional Diagram ..................................................................................................................... 1 2 General Description .................................................................................................................... 1 3 Absolute Maximum Ratings ....................................................................................................... 3 4 General Electrical Specifications ............................................................................................... 4 5 Magnetic Specifications ............................................................................................................. 5 5.1 MLX92231LSE-AAA-004 ..................................................................................................................................... 5 5.2 MLX92231LSE-AAA-007 ..................................................................................................................................... 5 5.3 MLX92231LSE-AAA-009 ..................................................................................................................................... 5 5.4 MLX92231LSE-AAA-010 ..................................................................................................................................... 5 6 Magnetic Behaviour .................................................................................................................... 6 6.1 Latch sensor ....................................................................................................................................................... 6 7 Detailed General Description ..................................................................................................... 7 8 Latching Characteristic .............................................................................................................. 7 9 Application Information .............................................................................................................. 8 9.1 Typical Three-Wire Application Circuit .................................................................................................................. 8 9.2 Automotive and Harsh, Noisy Environments Three-Wire Circuit ............................................................................ 8 10 Standard information regarding manufacturability of Melexis products with different soldering processes ....................................................................................................................................... 9 11 ESD Precautions ....................................................................................................................... 9 12 Package Information ............................................................................................................... 10 12.1 SE (TSOT-3L) Package Information ................................................................................................................. 10 12.2 UA (TO92-3L) Package Information ................................................................................................................ 11 13 Disclaimer ................................................................................................................................ 12 390109223101 REV 2 Page 2 of 12 Sept/14