SS1331 Unipolar Hall Switch-Low Sensitivity Features and Benefits – – – – – – – – – Application Examples – – – – – – – 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 3 pin SOT23 (suffix SO) Automotive, Consumer and Industrial Solid-state switch Brushless DC motor commutation Speed detection Angular position detection Proximity detection Current detector 3 pin SIP (suffix UA) Functional Block Diagram VDD Voltage Regulator OUT Chopper Hall Plate GND SIP Package Pin 1 – VDD Pin 2 – GND Pin 3 – OUT SOT Package Pin 1 – VDD Pin 2 – OUT Pin 3 – GND 1 V3.10 Nov 1, 2013 SS1331 Unipolar Hall Switch-Low Sensitivity General Description 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) or in a Plastic Single In Line (SIP 3L flat). Both 3-lead packages are RoHS compliat. The SS1331 is a unipolar 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 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) 2 V3.10 Nov 1, 2013 SS1331 Unipolar Hall Switch-Low Sensitivity Pin Definitions and Description 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 Operating Temperature Range Symbol -65 to 170 Value °C 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. 3 V3.10 Nov 1, 2013 SS1331 Unipolar Hall Switch-Low Sensitivity General Electrical Specifications DC Operating Parameters TA = 25°C, VDD= 3.5V to 24V (unless otherwise specified) Parameter Symbol Test Conditions Min Supply Voltage VDD Operating 3.5 Supply Current IDD B < BRP 1.5 Output Saturation Voltage VDSon IOUT = 20mA, B > BOP Output Leakage Current IOFF Output Rise Time Output Fall Time Typ Max Units 24 V 2.5 5 mA 0.4 0.5 V B < BRP VOUT = 24V 0.01 10 µA tr RL = 1kΩ, CL = 20pF 0.25 µs tf RL = 1kΩ, CL = 20pF 0.25 µs Magnetic Specifications DC Operating Parameters VDD = 3.5V to 24V (unless otherwise specified) Package UA SO Parameter Symbol Operating Point BOP Release Point BRP Hysteresis BHYST Operating Point BOP Release Point BRP Hysteresis BHYST Test Conditions Ta=25°C,Vdd=12V DC Min Typ Max Units 45 80 110 G 10 50 95 G 30 Ta=25°C,Vdd=12V DC G -110 -80 -45 G -95 -50 -10 G 30 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 package. 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. 4 V3.10 Nov 1, 2013 SS1331 Unipolar Hall Switch-Low Sensitivity Application Information For proper operation, a 100nF bypass capacitor should be placed as close as possible to the device between the VDD 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 = VCC2/ R1) When using a diode, a reverse current cannot flow and the voltage drop is almost constant (≈0.7V). Therefore, a 100Ω/0.25W resistor for 5V application and a diode for higher supply voltage are recommended. Typical Three-Wire Application Circuit When a weak power supply is used or when the device is intended to be used in noisy environment, it is recommended that figure followed 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. Automotive and Harsh, Noisy Environments Three-Wire Circuit ESD Precautions Electronic semiconductor products are sensitive to Electro Static Discharge (ESD). Always observe Electro Static Discharge control procedures whenever handling semiconductor products. 5 V3.10 Nov 1, 2013 SS1331 Unipolar Hall Switch-Low Sensitivity Package Information 2.13 1.87 0.75 ± 0.05 1.52 ± 0.1 Package UA, 3-Pin SIP: 3° ± 1° 1.00 1.20 45° ± 1° 4.0 ± 0.01 1 2 3 3.0 ± 0.01 Sensor Location Active Area Depth: 0.84(Nom) 3° ± 1° 6° ± 1° 3° ± 1° 6° ± 1° 1 2 0.05 ± 0.05 3 1.6.± 0.1 0.44± 0.01 0.38 ± 0.01 14 .5 ± 1 0.39± 0.01 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 VDD Pin 2 GND Pin 3 Output 1.27 2.54 6 V3.10 Nov 1, 2013 SS1331 Unipolar Hall Switch-Low Sensitivity Package SO, 3-Pin SOT-23: Notes 1). PINOUT: Top 3 2.60 1.50 3.00 1.80 1 Side Vie Pin 1 VDD Pin 2 Output Pin 3 GND 2). All dimensions are in millimeters; 2 1.70 2.10 End 2.70 3.10 1.00 1.30 0.70 0.90 0.35 0.50 0.10 0.25 0.20 Min 0.00 0.10 Ordering Information Part No. Pb-free Temperature Code Package Code Packing SS1331ESOT YES -40°C to 85°C SOT-23 7-in. reel, 3000 pieces/ reel SS1331EUA YES -40°C to 85°C TO-92 Bulk, 1000 pieces/ bag SS1331KSOT YES -40°C to 125°C SOT-23 7-in. reel, 3000 pieces/ reel SS1331KUA YES -40°C to 125°C TO-92 Bulk, 1000 pieces/ bag SS1331LSOT YES -40°C to 150°C SOT-23 7-in. reel, 3000 pieces/ reel SS1331LUA YES -40°C to 150°C TO-92 Bulk, 1000 pieces/ bag 7 V3.10 Nov 1, 2013