MLX92241-AAA 2-Wire Hall Effect Switch Features and Benefits Application Examples Wide operating voltage range: from 2.7V to 24V Automotive, Consumer and Industrial Integrated self-diagnostics Wiper motor Chopper-stabilized amplifier stage Window lifter Programmable Built-in negative temperature coefficient Seatbelt buckle Reverse Supply Voltage Protection Seat positioning Under-Voltage Lockout Protection Sunroof/Tailgate opener Thermal Protection Electrical power steering High ESD rating / Excellent EMC performance Ordering Information Part No. Temperature Code Package Code Comment MLX92241LUA-AAA-xxx-BU L (-40C to 150C) UA (TO92-3L) BU (Bulk) MLX92241LSE-AAA-xxx-RE L (-40C to 150C) SE (TSOT-23) RE (Reel) The included voltage regulator operates from 2.7 to 1 Functional Diagram 24V, hence covering a wide range of applications. With the built-in reverse voltage protection, a serial resistor VDD or diode on the supply line is not required so that even remote sensors can be specified for low voltage Voltage Regulator Under- with Reverse Polarity Voltage operation down to 2.7V while being reverse voltage Protection Lockout TEST tolerant. Temperature Bop/Brp Thermal Compensation reference Protection In an event of a drop below the minimum supply voltage during operation, the under-voltage lock-out Switched Output Hall protection will automatically freeze the device, Current Sink Plate CDS preventing the electrical perturbation to affect the Amplifier magnetic measurement circuitry. The output current Trimming state is therefore only updated based on a proper and Control Register accurate magnetic measurement result. GND The two-wire interface not only saves one wire, but also allows implementation of diagnostic functions as reverse polarity connection and malfunction detection. 2 General Description The on-chip thermal protection also switches off the output if the junction temperature increases above an The Melexis MLX92241 is a new generation of Hall- abnormally high threshold. It will automatically recover effect switches designed in mixed signal submicron once the temperature decreases below a safe value. CMOS technology. With switching magnetic characteristics the supply The device integrates a voltage regulator, Hall sensor current state is turned high by a sufficiently strong with advanced offset cancellation system and a current South Pole facing the package branded side. Toggling sink-configured output driver, all in a single package. the state of the supply current from high to low is possible by applying low or no magnetic field. Based on a brand new platform, the magnetic core is using an improved offset cancellation system allowing The MLX92241 is delivered in a Green and RoHS faster and more accurate processing while being compliant Plastic Single-in-Line (TO-92 flat) for temperature insensitive and stress independent. In through-hole mount or PCB-less design or in 3-pin Thin addition a temperature coefficient is implemented to Small Outline Transistor (TSOT) for surface mount compensate the natural behaviour of certain types of process magnets becoming weaker with rise in temperature. 390109224100 Rev. 1 Page 1 of 16 June/13 MLX92241-AAA 2-Wire Hall Effect Switch Table of Contents 1 Functional Diagram ...................................................................................................................... 1 2 General Description ...................................................................................................................... 1 3 Absolute Maximum Ratings ......................................................................................................... 4 4 General Electrical Specifications ................................................................................................ 5 5 Specifications ............................................................................................................................... 6 5.1 MLX92241LUA-AAA-003 ........................................................................................................................................... 6 5.2 MLX92241LUA-AAA-004 ........................................................................................................................................... 6 5.3 MLX92241LUA-AAA-005 ........................................................................................................................................... 6 5.4 MLX92241LUA-AAA-006 ........................................................................................................................................... 6 5.5 MLX92241LUA-AAA-007 ........................................................................................................................................... 7 5.6 MLX92241LSE-AAA-008 ........................................................................................................................................... 7 5.7 MLX92241LSE-AAA-011 ........................................................................................................................................... 7 5.8 MLX92241LSE-AAA-012 ........................................................................................................................................... 7 5.9 MLX92241LSE-AAA-013 ........................................................................................................................................... 8 5.10 MLX92241LSE-AAA-014 ......................................................................................................................................... 8 5.11 MLX92241LSE-AAA-015 ......................................................................................................................................... 8 5.12 MLX92241LSE-AAA-016 ......................................................................................................................................... 8 5.13 MLX92241LSE-AAA-017 ......................................................................................................................................... 8 6 Magnetic Behaviour ...................................................................................................................... 9 6.1 Unipolar Switch sensor .............................................................................................................................................. 9 7 Performance Graphs .................................................................................................................. 10 7.1 I vs. T ............................................................................................................................................................. 10 OFFLow J 7.2 I vs. T ............................................................................................................................................................ 10 OFFHigh J 7.5 I vs. T .................................................................................................................................................................. 10 ON J 7.4 I vs. V .......................................................................................................................................................... 10 OFFLow DD 7.5 I vs. V .......................................................................................................................................................... 10 OFFHigh DD 7.6 I vs. V ................................................................................................................................................................ 10 ON DD 7.7 V de-rating UA package ....................................................................................................................................... 11 DD 7.8 V de-rating TSOT package ................................................................................................................................... 11 DD 8 Application Information ............................................................................................................. 12 8.1 Typical Automotive Application Circuit ..................................................................................................................... 12 8.2 Automotive and Harsh, Noisy Environments Application Circuit .............................................................................. 12 8.3 Strobing V application (used for reduced self-heating) ......................................................................................... 12 DD 9 Standard information regarding manufacturability of Melexis products with different soldering processes ....................................................................................................................................... 13 10 ESD Precautions ....................................................................................................................... 13 11 Package Information ................................................................................................................ 14 390109224100 Rev. 1 Page 2 of 16 June/13