MT4412 Series Bipolar Hall-Effect Sensor with Pull-up Resistor

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Robert Stevens
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1 Bipolar HallEffect ensor with Pullup Resistor Features and Benefits Bipolar Technology Magnetic Type: Bipolar Wide Operating Voltage Range: upply Voltage 3.8~30V pecified Operating Temperature Range: From 40 ~150 High Magnetic ensitivity (typical) B OP =25Gauss, B RP=25Gauss Internal Pullup Resistor Lead Free Package Flat TO92, OT23, OT89B RoH Compliant Applications Automotive, Home appliances, Industrial peed Detection Brushless DC Motor Commutation Magnetic Encoder Family Members Part number MT4412A MT4412AT MT4412AT MT4412BT MT4412ET Description Flat TO92 package, bulk packaging (1000pcs/bag) Flat TO92 package, radial lead, bulk packaging (1000pcs/bag) OT23 package, tape and reel packaging (3000pcs/bag) OT89B package, tape and reel packaging ( 1000pcs/bag) OT23(thin outline) package, tape and reel packaging (3000pcs/bag) General Description The MT4412 family, produced with Bipolar technology. The Hall IC internally includes an onchip Hall voltage generator, a voltage regulator for operation with supply voltages of 3.8 to 30V, reverse protection diode, temperature compensation circuitry, smallsignal amplifier, chmitt trigger and an output driver with a pullup resistor. They are designed to respond to alternating North and outh poles. While the magnetic flux density(b) is larger than operate point (B OP), the output will be turned on (Low), the output is held until the magnetic flux density(b) is lower than release point (B ), then turn off (High). RP The MT4412 family provides a variety of packages to customers: OT23/OT89B for surface mount and flat TO92 for throughhole mount. All packages are RoH compliant. 01/10

2 Bipolar HallEffect ensor with Pullup Resistor Vs Regulator OUT Hall Element Amp 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 HYT : Hysteresis Window, B OP B RP Definition of witching Function V OUT (V) V OUT (V) B OP B RP North Pole 0 outh Pole North Pole 0 B OP B RP outh Pole witching Behavior of AT witching Behavior of A, BT and ET 02/10

3 Bipolar HallEffect ensor with Pullup Resistor N Motion N OUT=Low OUT=High OUT=Low OUT=High witching Point of AT witching Point of A N N Motion OUT=Low witching Point of BT OUT=High OUT=Low witching Point of ET OUT=High Note: Direction of magnetic flux Pin Description MT4412 AT Name Number Description GND 3 Ground OUT 2 Include pullup resistor MT4412 A ( MT4412 AT) Name Number Description Vs 1 Power Vs 1 Power GND 2 Ground OUT 3 Include pullup resistor MT4412 BT Name Number Description GND 2 Ground MT4412 OUT 3 Include pullup resistor OUT 2 Include pullup resistor ET Name Number Description Vs 1 Power Vs 1 Power GND 3 Ground 03/10

4 Bipolar HallEffect ensor with Pullup Resistor 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. ymbol Parameters Min Max Units V V RCC V OUT upply Voltage 40 V Reverse Battery Voltage 40 V Output Voltage 40 V I OUT Continuous output current 50 ma T A Operating Ambient Temperature T torage temperature T J Junction temperature 165 B Magnetic flux No Limit Gauss MT4412 eries pecifications At T A = 40 to 150, Vs = 3.8V to 30V (unless otherwise specified) ymbol Parameter Test Condition Min V upply Voltage Operating V I upply Current B<B RP V ON Output aturation Voltage I OUT=20mA, B>B OP T R Output Rise Time R L=1KOhm, C L =20pF T F Output Fall Time R L=1KOhm, C L =20pF F W R PU R TH B OP B RP 4 10 ma Maximum witching Frequency 100 KHz Internal Pullup Resistor Magnetic Operating Point Magnetic Release Point B HYT Hysteresis Window 10 OT23 Package Thermal Resistance 301 TO92 Package Thermal Resistance 230 OT89B Package Thermal Resistance At TA = 25 At T A = 25 At T A = 25,,,,, B OPB RP 150 Typ Max Units V us us Kohm /W /W /W 150 Gauss Gauss Gauss 04/10

5 Bipolar HallEffect ensor with Pullup Resistor Typical Application Circuit MT4412 Typical Output Waveform (The TO92 package as an example ) B Magnetic Field B OP B RP T Digital Output V High Low T 05/10

6 Bipolar HallEffect ensor with Pullup Resistor PACKAGE DEIGNATOR (MT4412A) Flat TO92 ymbol Dimensions in Millimeters 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 06/10

7 Bipolar HallEffect ensor with Pullup Resistor PACKAGE DEIGNATOR (MT4412AT) Flat TO92 Radial Lead ymbol Dimensions in Millimeters Dimensions in Inches Min Max Min Max A A b b c D D E e 2.540TYP 0.100TYP e TYP 0.200TYP L REF 0.563REF L REF 0.085REF x 2.025TYP 0.080TYP y 1.545TYP 0.061TYP z 0.500TYP 0.020TYP θ 45 TYP 45 TYP 07/10

8 Bipolar HallEffect ensor with Pullup Resistor PACKAGE DEIGNATOR (MT4412AT) OT23 ymbol Dimensions in Millimeters 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 /10

9 Bipolar HallEffect ensor with Pullup Resistor PACKAGE DEIGNATOR (MT4412BT) OT89B ymbol Dimensions in Millimeters Dimensions in Inches Min Max Min Max A A b b D c REF REF E HE e TYP TYP L x 2.250TYP 0.089TYP y 1.250TYP 0.049TYP z 0.300TYP 0.012TYP 09/10

10 Bipolar HallEffect ensor with Pullup Resistor PACKAGE DEIGNATOR (MT4412ET) OT23 (thin outline) Dimensions in Millimeters Dimensions in Inches ymbol Min Max Min Max A A A b c D E E e TYP TYP e L 0.550REF 0.022REF x 1.460TYP 0.057TYP y 0.650TYP TYP z 0.500TYP 0.020TYP θ /10

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