A1103 Unipolar Hall-Effect Digital Switch Application Examples Features and Benefits – – – – – – – – – 4.5V to 24V Operation -40℃ to 150℃ Superior temperature operation Bipolar technology Open-collector 25 mA output Reverse battery protection Small Size-SOT23 3L or SIP 3L Solid-state reliability Resistant to physical stress Activate with small, commercially available Permanent magnets Automotive, Consumer and Industrial Solid-state switch Brushless DC motor commutation Speed detection Linear position detection Angular position detection Proximity detection 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 – V DD Pin 2 – GND Pin 3 – OUT SOT Package Pin 1 – V DD Pin 2 – OUT Pin 3 – GND 1 V1.10 May 1, 2011 A1103 Unipolar Hall-Effect Digital Switch General Descriptions The A1103 is a unipolar Hall-effect sensor IC fabricated from bipolar technology. The device integrates a voltage regulator, reverse battery protection diode, Hall sensor with dynamic offset cancellation system, temperature compensation circuitry, small signal amplifier, Schmitt trigger and an open-collector output to sink up to 25 mA. 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. 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 compliant. These Hall-effect switches are monolithic integrated circuits with tighter magnetic specifications, designed to operate continuously over extended temperatures to +150℃,and are Glossary of Terms MilliTesla (mT), Gauss Units of magnetic flux density: 1mT = 10 Gauss RoHS Restriction of Hazardous Substances Operating Point (B OP ) Magnetic flux density applied on the branded side of the package which turns the output driver ON (V OUT = V DSon ) Release Point (B RP ) Magnetic flux density applied on the branded side of the package which turns the output driver OFF (V OUT = high) 2 V1.10 May 1, 2011 A1103 Unipolar Hall-Effect Digital Switch Pin Definitions and Descriptions SOT Pin № SIP Pin № Name Type 1 1 VDD Supply Supply Voltage pin 2 3 OUT Output Open Drain Output pin 3 2 GND Ground Ground pin Function Absolute Maximum Ratings Parameter Symbol Supply Voltage Value Units 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 “K” TA -40 to 125 °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 V1.10 May 1, 2011 A1103 Unipolar Hall-Effect Digital Switch General Electrical Specifications DC Operating Parameters T A = 25℃, V DD = 4.5V to 24V (unless otherwise specified) Parameter Symbol Test Conditions Min Supply Voltage VDD Operating 4.5 Supply Current IDD B < B RP 4 Output Saturation Voltage VDSon Output Leakage Current Typ Max Units 24 V 5 7 mA IOUT = 20mA, B > B OP 0.3 0.5 V IOFF B < B RP VOUT = 24V 0.1 10 µA Output Rise Time tr RL = 820Ω, CL = 20pF 0.04 2.0 µs Output Fall Time tf RL =820Ω, CL = 20pF 0.18 2.0 µs Magnetic Specifications DC Operating Parameters VDD = 4.5V to 24V (unless otherwise specified) Parameter Symbol Operating Point B OP Release Point B RP Hysteresis B HYS Test Conditions Ta=25℃,Vdd=12V DC Min Typ Max 150 170 190 G 100 125 160 G 45 Units G Application Information 4 V1.10 May 1, 2011 A1103 Unipolar Hall-Effect Digital Switch Package Information Package UA, 3-Pin SIP: 5 V1.10 May 1, 2011 A1103 Unipolar Hall-Effect Digital Switch Package LH, 3-Pin SOT-23： Ordering Information Part No. Pb-free Temperature Code Package Code Packing A1103ESOT YES -40°C to 85°C SOT-23 7-in. reel, 3000 pieces/reel A1103EUA YES -40°C to 85°C TO-92 Bulk, 1000 pieces/bag A1103KSOT YES -40°C to 125°C SOT-23 7-in. reel, 3000 pieces/reel A1103KUA YES -40°C to 125°C TO-92 Bulk, 1000 pieces/bag A1103LSOT YES -40°C to 150°C SOT-23 7-in. reel, 3000 pieces/reel A1103LUA YES -40°C to 150°C TO-92 Bulk, 1000 pieces/bag 6 V1.10 May 1, 2011