MT4106-EN Series Uni-polar, Hall-Effect Magnetic Position Sensors

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Helena Ramsey
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1 Features and Benefits BCD Technology Magnetic Switch Type: Uni-polar Wide Operating Voltage Range: Supply Voltage 2.8~24V Specified Operating Temperature Range:-40 ~150 High Magnetic Sensitivity B OP =140Gauss, B RP =110Gauss (typical) High ESD Rating Reversed Power Supply Protection Over Current Protection RoHS Compliant 2011/65/EU Applications Home appliances, Industrial Position Detection Proximity Switch Family Members Part number MT4106A-EN MT4106AT-EN Description Flat TO-92 package, bulk packaging (1000pcs/bag) SOT-23 package, tape and reel packaging (3000pcs/bag) General Description The MT4106-EN is a family of unipolar-type Hall-effect sensor ICs produced in BCD technology, which offers both high performance and high reliability. The IC internally includes a voltage regulator for operation with supply voltage from 2.8V to 24V, a small-signal amplifier, Hall sensors with dynamic offset cancellation, a Schmitt trigger and an open-drain output with over-current protection. It features temperature compensation technique to make the magnetic switching points stable over a wide temperature range. Other key features such as reverse supply voltage protection, output over-current protection and ESD level exceeding ±5.5KV (HBM) make the IC extremely robust and fault tolerant, which is important in demanding application environment such as automotive. Its extremely low operating supply voltage 2.8V also makes it possible to add external resistance in series with the supply pin for even greater protection against high voltage transients from the power supply. When the magnetic flux density (B) is greater than the operate point (B OP ), the output turns on (Low). The output is held steady till the magnetic flux density (B) is less than the release point (B RP ), at which point it turns off (High). 1 / 8

2 V S Reference Regulator Dynamic offset cancelation Over Current Protect OUT ESD Hall Plate ITA COMP Output Driver ESD GND Functional Block Diagram Function Description Definition of Magnetic Parameters B OP : Operating Point, magnetic flux density applied on the branded side of the package which turns the output driver ON (V OUT =Low) B RP : Release Point, magnetic flux density applied on the branded side of the package which turns the output driver OFF (V OUT =High) B HYST : Hysteresis Window, B OP -B RP Definition of Switching Function OUT(V) OUT(V) North Pole BOP BRP 0 0 B B RP OP South Pole Switching Behavior of AT Switching Behavior of A 2 / 8

3 N N Motion S S OUT=Low OUT=High OUT=Low OUT=High Switching point of AT Switching point of A Note: Direction of magnetic flux Pin Description MT4106AT-EN Name Number Description V S 1 Power GND 3 Ground OUT 2 Open-drain Output MT4106A-EN Name Number Description V S 1 Power GND 2 Ground OUT 3 Open-drain Output Electrical and Magnetic Characteristics Absolute Maximum Ratings Absolute maximum ratings are limiting values to be applied individually, and beyond which the serviceability of the circuit may be impaired. Functional operability is not necessarily implied. Exposure to absolute maximum rating conditions for an extended period of time may affect device reliability. Absolute maximum ratings: all voltages listed are referenced to GND. Symbol Parameters Min Max Units V S Supply Voltage - 27 V V RCC Reverse Battery Voltage V V OUT Output Voltage - 27 V I OUT Continuous output current - 50 ma T A Operating ambient Temperature T S Storage temperature T J Junction Temperature B Magnetic Flux No Limit Gauss 3 / 8

4 MT4106-EN Series Specifications At T A =-40 to 150, V S = 2.8V to 24V (unless otherwise specified) Symbol Parameter Test Condition Min Typ Max Units V S Supply Voltage Operating V I S Supply Current B< BRP ma I OCP Short Circuit Protection Current B>B OP, V OUT =V S ma V DSON Output Saturation Voltage IOUT=20mA, B> BOP V I OFF Output Leakage Current B< BRP, VOUT=24V μa 1,2 T R 1,2 T F 1 T PO 1 F C Output Rise Time R L =1KOhm,C L =20pF μs Output Fall Time R L =1KOhm,C L =20pF μs Power On Time dv S /dt>5v/us, B>B OP(MAX) μs Chopping Frequency KHz R TH SOT-23 Package Thermal Resistance Flat TO-92 Package Thermal Resistance SOT-89B Package Thermal Resistance /W /W /W B OP Magnetic Operating Point T A = Gauss B RP Magnetic Release Point T A = Gauss B HYST Hysteresis Window T A =25, B OP -B RP Gauss ESD Electrostatic discharge (HBM) AEC-Q ± KV Electrostatic discharge (CDM) AEC-Q ±1 - - KV 1 Guaranteed by device design and characterization. 2 CL = oscilloscope probe capacitance. 4 / 8

5 Power Derating Curve Characteristic Performance Average Supply Current versus Supply Voltage Average Supply Current versus Temperature Magnetic Characteristics versus Supply Voltage Magnetic Characteristics versus Temperature 5 / 8

6 Typical Application Circuit Note: Recommended value for R L is 1KOhms to 10KOhms. V S 100nF V S OUT MT4106-EN GND R L 1nF Typical Output Waveform (The TO-92 package as an example) B B OP B RP T V High Low T Power On Output Waveform (The Flat TO-92 package as an example) V S Magnetic field B>BOP B<BRP Digital Output T PO Note: Vs rise time<1us, T PO is the time from Vs becoming stable to output becoming valid. 6 / 8

7 PACKAGE DESIGNATOR (MT4106A-EN) Flat TO-92 Symbol Dimensions in Millimeters 7 / 8 Dimensions in Inches Min Max Min Max A A b b C D D E e TYP TYP e L x 2.025TYP 0.080TYP y 1.545TYP 0.061TYP z 0.500TYP 0.020TYP θ 45 TYP 45 TYP

8 PACKAGE DESIGNATOR (MT4106AT-EN) SOT-23 - Symbol Dimensions in Millimeters 8 / 8 Dimensions in Inches Min Max Min Max A A A b c D E E e TYP TYP e L x 1.460TYP 0.057TYP y 0.800TYP 0.032TYP z 0.600TYP 0.024TYP θ

MT1401A-T Flat TO-92 package, Radial lead, bulk packaging (1000pcs/bag)

MT1401A-T Flat TO-92 package, Radial lead, bulk packaging (1000pcs/bag) Features and Benefits CMO Technology Magnetic Type: Latch Wide Operating Voltage Range: upply Voltage 2.8~18V pecified Operating Temperature Range: From 40 ~125 High Magnetic ensitivity Bop=20Gauss, Brp=-20Gauss