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MLLX90248Micropower & Omnipolar Hall SwitchApplication ExamplesesFeatures and Benefits00000 Micropower consumption ideal forbattery-powered applications0 Omnipolar, easy to use as output switcches withboth North and South pole0 Very High Sensitivity Hall Sensor0 Chopper stabilized amplifier stage0 Open-Drain Output0 Operation down to 1.5V0 Ultra-Thin QFN package (0.43mm maax) & ThinSOT23 3L (both RoHS Compliant)Solid State SwitchHandheld Wireless Handset AwakeASwitchLid close sensor for battery-poowered devicesMagnet proximity sensor for reedeed switchreplacement in low duty cyclee applicationsOrdering CodeProduct CodeMLX90248MLX90248Temperature CodeEEPackage CodeSELDOption CodeEBA-000EBA-000Legend:Temperature Code:Package Code:Packing Form:E for Temperature Range -40 C to 85 CSE for TSOT, LD for UTQFNRE for ReelOrdering example:MLX90248EMLX90248ESE-EBA-000-RE1 Functional DiagramPacking Form CodeRERE2 General DescriptionThe MLX90248 Omnipolar TM Hall effect sensorIC is fabricated from mixxed signal CMOStechnology. Itincorporatesates advanced chopperstabilization techniques to prrovide accurate andstable magnetic switch points.The circuit design provides an internally controlledclocking mechanism to cyclee power to the Hallelement and analog signal processing circuits.This serves to place the highh current-consumingportions of the circuit intonto a “Sleep” mode.Periodically the device is ““Awakened” by thisinternal logic and the magnetagnetic flux from the Hallelement is evaluated againnst the predefinedthresholds. If the flux density iss above or below theBop/Brp thresholds then the output transistor isdriven to change states accoordingly. While in the“Sleep” cycle the output transsistor is latched in itsprevious state. The design has been optimized forservice in applications requiringrextendedoperating lifetime in battery powwered systems.The output transistor of the 9090248 will be latchedon (BOP) in the presence of a sufficiently strongSouth or North magnetic fieldd facing the markedside of the package. The outpututput will be latched off(BRP) in the absence of a magnetagnetic field.390109024802Rev 002Page 1 of 11Data SheetApr/12

MLX90248Micropower & Omnipolar Hall SwitchTable of Contents1 Functional Diagram . 12 General Description. 13 Glossary of Terms . 34 Absolute Maximum Ratings . 35 Pin Definitions and Descriptions. 36 General Electrical Specifications . 47 Magnetic Specifications . 48 Outputs Behaviour vs. Magnetic Pole. 49 Detailed General Description . 510 Unique Features. 511 Performance Graphs . 611.1 Magnetic Thresholds vs. TA . 611.2 Magnetic Thresholds vs. VDD . 611.3 Current Consumption vs. TA . 611.4 Current Consumption vs. VDD . 611.5 Consumption Period vs. TA . 611.6 Consumption Period vs. VDD . 611.7 Output Saturation Voltage vs. TA . 711.8 Output Switching Characteristics . 712 Application Information. 713 Standard information regarding manufacturability of Melexis products withdifferent soldering processes. 814 ESD Precautions . 815 Package Information. 915.1 SE Package (TSOT-3L) . 915.2 LD Package (UTQFN-6L) . 1016 Disclaimer. 11390109024802Rev 002Page 2 of 11Data SheetApr/12

MLX90248Micropower & Omnipolar Hall Switch3 Glossary of TermsGauss, milliTesla (mT),Units of magnetic flux density :10 Gauss 1mT4 Absolute Maximum RatingsParameterSymbolSupply VoltageVDDSupply CurrentIDDOutput VoltageVOUTOutput CurrentIOUTOperating Temperature RangeTAStorage Temperature RangeTSESD Sensitivity - HBM (1)ESD Sensitivity - MM (2)Table 1: Absolute maximum ratingsValue55510-40 to 85-50 to 1508000800UnitsVmAVmA C CVVNote 1: Human Body Model according JESD22-A114 standard – 100pF capacitor discharged through 1.5k& resistor into each pin.Note 2: Machine Model according JESD22-A115 standard – 200pF capacitor discharged directly (0& resistor) into each pin.Exceeding the absolute maximum ratings may cause permanent damage. Exposure to absolute-maximumrated conditions for extended periods may affect device reliability.5 Pin Definitions and DescriptionsLD PackageSE PackagePin NameFunctionPin (SE)VDDPower Supply1GNDGround3OUTOutput (Open Drain)2NCNot ConnectedTable 2: Pin definitions and descriptionsPin (LD)2451,3,6Note : Exposed Pad on LD package is connected to ground390109024802Rev 002Page 3 of 11Data SheetApr/12

MLX90248Micropower & Omnipolar Hall Switch6 General Electrical SpecificationsDC Operating Parameters T A 25oC, VDD 1.5V to 3.6V (unless otherwise specified)ParameterSymbolSupply VoltageVDDAwake Supply CurrentIDDawakeSleep Supply CurrentIDDsleepAverage Supply CurrentIDDavOutput Saturation VoltageVSATOutput Leakage CurrentILEAKAwake PeriodTAWSleep PeriodTSLTable 3: Electrical specificationsTest ConditionsOperatingVDD 3.6VVDD 3.6VVDD 3.6V, AverageIOUT 1mAVDD Max3.656100.4112070UnitsVmA A AV A sms7 Magnetic SpecificationsoDC Operating Parameters T A 25 C, VDD 1.5V to 3.6V (unless otherwise specified)ParameterSymbolOperating PointBOPRelease PointBRPHysteresisBHYSTTable 4: Magnetic specificationsMin /-1.1 /-0.80.3Typ-Max /-6 /-5.72.3UnitsmTmTmTNote : For typical values, please refer to the performance graphs section8 Outputs Behaviour vs. Magnetic PoleSE PackageLD PackageParameterTest conditionsOUT (SE)North or South poleB BOP Low“Zero” magnetic poleB BRP HighTable 5: Outputs behaviour vs. magnetic poleOUT (LD)LowHighNote : The magnetic pole is applied facing the branded side of the package390109024802Rev 002Page 4 of 11Data SheetApr/12

MLX90248Micropower & Omnipolar Hall Switch9 Detailed General DescriptionThe MLX90248 is originally used in mobile phone applications for open/close lid detection (flip, slide andswivel phone type). The goal of this detection is to switch on or off the application if the lid is opened orclosed, in order to save battery power.The same operation principle can be simply applied to any other battery-powered device with a lid/cover likelaptop, digital cameras and camcorders.By the use of a very high sensitivity Hall sensor, a very small and cheap magnet is enough to trigger theMLX90248, hence it can easily replace reed switch.The major benefit of using a Hall sensor is to provide “electronic” commutation, which is bounce-free, morereliable and with increased lifetime compared to usual mechanical contacts.10 Unique FeaturesThe MLX90248 exhibits “Omnipolar” magnetic characteristics. It means the device reacts to both North andSouth magnetic pole. The purpose is to detect the presence of any magnetic field applied on the device.This mode of operation simplifies customer production processes by avoiding the need to detect the Hallsensor pole active on the magnet used in the application.Taking the example of a generic Hall sensor “south pole active”, during its production, the customer mustdetect the south pole of the application magnet and face it to the device to enable the output to be turned onand off. Without any magnet pole detection system, the incorrect magnetic pole (north in this example) couldbe faced to the device which would fail the application.Therefore, the “Omnipolar” magnetic behaviour helps customers by removing the need of magnet poledetection system during production phase.The “Micropower” feature makes the MLX90248 especially suitable for battery-powered device as itcombines low voltage operation and low current consumption. By using a sleep/awake strategy managedinternally, the power consumption is drastically reduced. To make a comparison, the MLX90248 consumes100 times less power than the generic low voltage Melexis Hall sensor US3881.As well as Thin SOT package, the MLX90248 is now delivered in an ultra thin UTQFN package. This new2leadless package only requires 3mm PCB surface and is 0.43mm maximum thick, which is particularlyimportant in design where space-saving and miniaturisation are the critical factors.390109024802Rev 002Page 5 of 11Data SheetApr/12

MLX90248Micropower & Omnipolar Hall Switch11 Performance GraphsUnless otherwise specified, performance graphs given at VDD 3.6V and TA 25 degree C.11.1 Magnetic Thresholds vs. TA11.2 Magnetic Thresholds vs. 522.5Ta ( C)33.5VDD (V)11.3 Current Consumption vs. TA11.4 Current Consumption vs. VDD1010Idd awake (mA)Idd awake (mA)Idd sleep (uA) Iddaverage (uA)Idd sleep (uA)Idd average (uA)8Current Consumption8Current ConsumptionBrpNBrpS3BopNMagnetic threshold (mT)Magnetic threshold (mT)3BopNBopS64264200-40-200204060801.52Ta ( C)2.533.5VDD (V)11.5 Consumption Period vs. TA11.6 Consumption Period vs. VDD10080Tawake(us), VDD 3.6VTawake(us)Tsleep(ms)Tsleep(ms), VDD Ta ( C)390109024802Rev 00222.533.5VDD (V)Page 6 of 11Data SheetApr/12

MLXX90248Micropower & Omnipolar Hall Switch11.7 Output Saturation Voltagege vs. TA11.8 Output Switching Charracteristics400VDD 1.5VOutput Saturation Voltage (mV)VDD 3.6V3002001000-40-20020406080Ta ( C)12 Application InformationnTypical application390109024802Rev 002Page 7 of 11Data SheetApr/12

MLX90248Micropower & Omnipolar Hall Switch13 Standard information regarding manufacturability of Melexisproducts with different soldering processesOur products are classified and qualified regarding soldering technology, solderability and moisturesensitivity level according to following test methods:Reflow Soldering SMD’s (Surface Mount Devices)IPC/JEDEC J-STD-020Moisture/Reflow Sensitivity Classification for Nonhermetic Solid State Surface Mount Devices(classification reflow profiles according to table 5-2)EIA/JEDEC JESD22-A113Preconditioning of Nonhermetic Surface Mount Devices Prior to Reliability Testing(reflow profiles according to table 2)Wave Soldering SMD’s (Surface Mount Devices) and THD’s (Through Hole Devices)EN60749-20Resistance of plastic- encapsulated SMD’s to combined effect of moisture and soldering heatEIA/JEDEC JESD22-B106 and EN60749-15Resistance to soldering temperature for through-hole mounted devicesIron Soldering THD’s (Through Hole Devices)EN60749-15Resistance to soldering temperature for through-hole mounted devicesSolderability SMD’s (Surface Mount Devices) and THD’s (Through Hole Devices)EIA/JEDEC JESD22-B102 and EN60749-21SolderabilityFor all soldering technologies deviating from above mentioned standard conditions (regarding peaktemperature, temperature gradient, temperature profile etc) additional classification and qualification testshave to be agreed upon with Melexis.The application of Wave Soldering for SMD’s is allowed only after consulting Melexis regarding assurance ofadhesive strength between device and board.Melexis is contributing to global environmental conservation by promoting lead free solutions. For moreinformation on qualifications of RoHS compliant products (RoHS European directive on the Restriction Ofthe use of certain Hazardous Substances) please visit the quality page on our website:http://www.melexis.com/quality.aspx14 ESD PrecautionsElectronic semiconductor products are sensitive to Electro Static Discharge (ESD).Always observe Electro Static Discharge control procedures whenever handling semiconductor products.390109024802Rev 002Page 8 of 11Data SheetApr/12