S1102 Unipolar Hall Switch-Low Sensitivity Features and Benefits Application Examples – – – – – – – – – – – – – – – – 3.5V to 24V Operation -40℃ to 150℃ Superior temperature operation CMOS technology Low current consumption Chopper-stabilized amplifier stage Open drain output Low sensitivity Small Size-SOT23 3L and SIP 3L both RoHS compliant packages Automotive, Consumer and Industrial Solid-state switch Brushless DC motor commutation Speed detection Angular position detection Proximity detection Current detector 3 pin SOT23 (suffix SO) 3 pin SIP (suffix UA) Functional Block Diagram VDD Voltage Regulatr 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 16, 2013 S1102 Unipolar Hall Switch-Low Sensitivity General Descriptions The S1102 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. 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. These Hall-effect switches are monolithic integrated circuits with tighter magnetic specifications, designed to operate continuously over extended temperatures to +150℃,and are The device is delivered in a Small Outline Transistor (SOT) and in a Plastic Single In Line (SIP 3L flat). Both 3-lead packages are RoHS compliant. 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 16, 2013 S1102 Unipolar Hall Switch-Low Sensitivity 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 Symbol Value Units Temperature Suffix “E” TA -40 to 85 °C Temperature Suffix “L” TA -40 to 150 °C Absolute maximum ratings Operating Temperature Range 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 16, 2013 S1102 Unipolar Hall Switch-Low Sensitivity General Electrical Specifications DC Operating Parameters TA = 25℃, VDD= 3.5V to 24V (unless otherwise specified) Parameter Symbol Test Conditions Supply Voltage VDD Operating 3.5 Supply Current IDD B < BRP 1.5 Output Saturation Voltage VDSon Output Leakage Current Typ Min Max Units 24 V 2.5 5 mA IOUT = 20mA, B > BOP 0.4 0.5 V 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) S1102 Parameter Symbol Operating Point BOP Release Point BRP Hysteresis BHYS Test Conditions Ta=25℃,Vdd=12V DC Min Typ Max Units 100 150 G 60 130 G 30 G Application Information Typical Three-Wire Application Circuit 4 V3.10 Nov 16, 2013 S1102 Unipolar Hall Switch-Low Sensitivity 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 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. Both solutions provide the required reverse voltage protection. When a weak power supply is used or when the device is intended to be used in noisy environment, it is recommended that figure 13.3 from the Application Information section 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. 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 16, 2013 S1102 Unipolar Hall Switch-Low Sensitivity Package Information 2.13 0.76 ± 0.05 1.58 ± 0.1 Package UA, 3-Pin SIP: 3° ± 1° 1.00 45° ± 1° 4.0 ± 0.02 1 2 3 3.0 ± 0.02 Sensor Location S02X xxx Active Area Depth: 0.84(Nom) 3° ± 1° 6° ± 1° 3° ± 1° 6° ± 1° 1 2 0.05 ± 0.05 3 1.1.± 0.1 3 - 0.44 14 ± 0.5 3 - 0.39 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 Marking: S – SEC logo 02X — Code of Device(S1102E or L) XXX – Production Lot 1.27 6 V3.10 Nov 16, 2013 S1102 Unipolar Hall Switch-Low Sensitivity Package LH, 3-Pin SOT-23: S12XX Marking: 12 — Code of Device XX – Production Lot Ordering Information Part No. Pb-free Temperature Code Package Code Packing S1102 YES E(-40°C to 85°C) LHLT(SOT-23) 7-in. reel, 3000 pieces/reel S1102 YES E(-40°C to 85°C) UA(TO-92) Bulk, 1000 pieces/bag S1102 YES L(-40°C to 150°C) LHLT(SOT-23) 7-in. reel, 3000 pieces/reel S1102 YES L(-40°C to 150°C) UA(TO-92) Bulk, 1000 pieces/bag 7 V3.10 Nov 16, 2013