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Unipolar Hall Switch-Low Sensitivity 1 V3.10 Nov 1, 201 3 Packages Features and Benefits 3 pin SOT23 (suffix SO) 3 pin SIP (suffix UA) – 3.5V to 24V Operation – -40°C to 150°C Superior temperature operation – CMOS technology – Low current consumption – Chopper-stabilized amplifier stage – Open drain output – Low sensitivity – Small Size SOT23 3L or SIP 3L both RoHS compliant packages Functional Block Diagram Application Examples – Automotive, Consumer and Industrial – Solid-state switch – Brushless DC motor commutation – Speed detection – Angular position detection – Proximity detection – Current detector General Description The SS149 is a uni polar Hall- effect sensor IC fabricated from CMOS technology. The device integrates a voltage regulator, Hall sensor with dynamic offset cancellation system, small signal amplifier, Schmitt trigger and an open- drain output driver. With suitable output pull up, they can be used with bipolar or CMOS logic circuits. These Hall -effect switches are monolithic integrated circuits with tighter magnetic specifications, designed to operate continuously over extended temperatures to +150°C, and are more stable with both temperature and supply voltage changes. The unipolar switching characteristic makes these devices ideal for use with a simple bar or rod magnet. Thanks to its wide operating voltage range and extended choice of temperature range, it is quite suitable for use in automotive, industrial and consumer applications. The device is delivered in a Small Outline Transistor (SOT) and in a Plastic Single In L ine ( SIP 3L flat). Both 3-lead packages are RoHS compliant. VDD OUT Voltage Regulator Chopper Hall Plate GND Pin 1 – VDD Pin 1 – VDD Pin 2 – GND Pin 2 – OUT Pin 3 – OUT Pin 3 – GND

Unipolar Hall Switch-Low Sensitivity 2 V3.10 Nov 1, 201 3 Glossary of Terms MilliTesla (mT), Gauss Units of magnetic flux density: 1mT = 10 Gauss RoHS Restriction of Hazardous Substances Operating Point (BOP) Magnetic flux density applied on the branded side of the package which turns the output driver ON (VOUT = VDSon) Release Point (BRP) Magnetic flux density applied on the branded side of the package which turns the output driver OFF (VOUT = high) Pin Definitions and Descriptions SOT Pin № SIP Pin № Name Type Function 1 1 VDD Supply Supply Voltage pin 2 3 OUT Output Open Drain Output pin 3 2 GND Ground Ground pin Absolute Maximum Ratings Parameter Symbol Value Units Supply Voltage VDD 28 V Supply Current IDD 50 mA Output Voltage VOUT 28 V Output Current IOUT 50 mA Storage Temperature Range TS -65 to 170 °C Operating Temperature Range Symbol Value Units Temperature Suffix “E” TA -40 to 85 °C Temperature Suffix “K” TA -40 to 125 °C Temperature Suffix “L” TA -40 to 150 °C Exceeding the absolute maximum ratings may cause permanent damage. Exposure to absolute -maximum-rated conditions for extended periods may affect device reliability.

Unipolar Hall Switch-Low Sensitivity 3 V3.10 Nov 1, 201 3 General Electrical Specifications DC Operating Parameters TA = 25°C, VDD= 3.5V to 24V (unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Units Supply Voltage VDD Operating 3.5 24 V Supply Current IDD B < BRP 1.5 2.5 5 mA Output Saturation Voltage VDSon IOUT = 20mA, B > BOP 0.4 0.5 V Output Leakage Current IOFF B < BRP VOUT = 24V 0.01 10 µA Output Rise Time tr RL = 1kΩ, CL = 20pF 0.25 µs Output Fall Time tf RL = 1kΩ, CL = 20pF 0.25 µs Magnetic Specifications DC Operating Parameters VDD = 3.5V to 24V (unless otherwise specified) Package Parameter Symbol Test Conditions Min Typ Max Units UA Operating Point BOP Ta=25°C,Vdd=12V DC 90 120 150 G Release Point BRP 75 80 140 G Hysteresis BHYST 40 G SO Operating Point BOP Ta=25°C,Vdd=12V DC -150 -120 -90 G Release Point BRP -140 -80 -75 G Hysteresis BHYST 40 G Output Behavior versus Magnetic Pole DC Operating Parameters TA = -40°C to 150°C, VDD = 3.5V to 24V (unless otherwise specified) Test Conditions (UA) Test Conditions (SO) OUT B < BRP B > BRP High B > BOP B < BOP Low The SOT-23 device is reversed from the UA pack age. The SOT-23 output transistor will be turned on(drops low) in the presence of a sufficiently strong North pole magnetic field applied to the marked face.

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Application Information

Typical Three-Wire Application Circuit Automotive and Harsh, Noisy Environments Three-Wire Circuit Application Comments For proper operation, a 100nF bypass capacitor should be placed as close as possible to the device between the V DD and ground pin. For reverse voltage protection, it is recommended to connect a resistor or a diode in series with the VDD pin. When using a resistor, three points are important: - the resistor has to limit the reverse current to 50mA maximum (VCC / R1 ≤ 50mA) - the resulting device supply voltage VDD has to be higher than VDD min (VDD = VCC – R1.IDD) - the resistor has to withstand the power dissipated in reverse voltage condition (PD = VCC 2/ R1) When using a diode, a reverse current cannot flow and the voltage drop is almost constant (≈ 0.7V). Therefore, a 100 Ω /0.25W resistor for 5V application and a diode for higher supply voltage are recommended. When a weak power supply is used or when the device is intended to be used in noisy environment, it is recommended the second figure above is used. The low-pass filter formed by R1 and C1 and the Zener diode Z1 bypass the disturbances or voltage spikes occurring on the device supply voltage VDD. The diode D1 provides additional reverse voltage protection. Both solutions provide the required reverse voltage protection. ESD Precautions Electronic semiconductor products are sensitive to Electro Static Discharge (ESD). Always observe Electro Static Discharge control procedures whenever handling semiconductor products.

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Package Information

Package UA, 3-Pin SIP: 4.0 ± 0.01 1.27 2.13 1.87 1.00 1.20 45° ± 1° 1.52 ± 0.1 3° ± 1° 0.75 ± 0.05 3.0 ± 0.01 0.44± 0.01 0.05 ± 0.05 1.6.± 0.1 0.84(Nom) 3° ± 1° 6° ± 1° 6° ± 1° 3° ± 1° 14 .5 ± 1 Active Area Depth: Sensor Location Notes: 1). Controlling dimension : mm ; 2). Leads must be free of flash and plating voids ; 3). Do not bend leads within 1 mm of lead to package interface ; 4). PINOUT: Pin 1 V DD Pin 2 GND Pin 3 Output 0.39± 0.01 0.38 ± 0.01 2.54

Unipolar Hall Switch-Low Sensitivity 6 V3.10 Nov 1, 201 3 Package SO, 3-Pin SOT-23:

Ordering Information

Part No. Pb-free Temperature Code Package Code Packing SS149ESOT YES -40°C to 85°C SOT-23 7-in. reel, 3000 pieces/reel SS149EUA YES -40°C to 85°C TO-92 Bulk, 1000 pieces/bag SS149KSOT YES -40°C to 125°C SOT-23 7-in. reel, 3000 pieces/reel SS149KUA YES -40°C to 125°C TO-92 Bulk, 1000 pieces/bag SS149LSOT YES -40°C to 150°C SOT-23 7-in. reel, 3000 pieces/reel SS149LUA YES -40°C to 150°C TO-92 Bulk, 1000 pieces/bag 2.70 3.10 1.00 1.30 0.70 0.90 0.00 0.10 0.35 0.50 0.10 0.25 0.20 Min 2.60 3.00 1.50 1.80 1.70 2.10 2 1 Top Side Vie End Notes 1). PINOUT: Pin 1 VDD Pin 2 Output Pin 3 GND 2). All dimensions are in millimeters;