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Unipolar Hall-Effect Digital Switch Packages Features and Benefits – 4.5V to 24V Operation – -40℃ to 150℃ Superior temperature operation – Bipolar technology – Open-collector 25 mA output – Reverse battery protection – Solid-state reliability – Resistant to physical stress – Small Size-SOT23 3L or SIP 3L – Activate with small, commercially available 3 pin SOT23 (suffix SO) 3 pin SIP (suffix UA) Permanent magnets Functional Block Diagram Application Examples – Automotive, Consumer and Industrial – Solid-state switch – Brushless DC motor commutation – Speed detection – Angular position detection – Linear position detection – Proximity detection General Description The SS129 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 cance llation 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 These Hall-effect switches are monolithic integrated circuits with tighter magnetic specifications, designed to operate continuously over extended temperatures to +150 ,℃ 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 c hoice 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 Line ( 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 1 V2.10 May 1, 2012

Unipolar Hall-Effect Digital Switch 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 Table 1: Pin definitions and descriptions 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 Table 2: Absolute maximum ratings Operating Temperature Range Symbol Value Units Temperature Suffix “E” TA -40 to 85 °C Temperature Suffix “K” TA -40 to125 °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. 2 V2.10 May 1, 2012

Unipolar Hall-Effect Digital Switch General Electrical Specifications DC Operating Parameters TA = 25℃, VDD= 4.5V to 24V (unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Units Supply Voltage VDD Operating 4.5 24 V Supply Current IDD B < BRP 4 5 7 mA Output Saturation Voltage VDSon I OUT = 20mA, B > BOP 0.3 0.5 V Output Leakage Current IOFF B < BRP VOUT = 24V 0.1 10 µA Output Rise Time tr R L = 820Ω, CL = 20pF 0.04 2.0 µs Output Fall Time tf R L = 820Ω, CL = 20pF 0.18 2.0 µs Table 3: Electrical Specifications Magnetic Specifications DC Operating Parameters VDD = 4.5V to 24V (unless otherwise specified) SS129 Parameter Symbol Test Conditions Min Typ Max Units Operating Point BOP 160 180 200 G Release Point BRP 110 140 170 G Hysteresis B HYST Ta=25 ,V℃ DD=12V DC 40 G Table 4: Magnetic Specifications

Application Information

3 V2.10 May 1, 2012

Unipolar Hall-Effect Digital Switch

Package Information

Package A, 3-Pin SIP: 4 V2.10 May 1, 2012

Unipolar Hall-Effect Digital Switch Package AT, 3-Pin SOT-23:

Ordering Information

Part No. Pb-free Temperature Code Package Code Packing SS129ESOT YES -40°C to 85°C SOT-23 7-in. reel, 3000 pieces/reel SS129EUA YES -40°C to 85°C TO-92 Bulk, 1000 pieces/bag SS129KSOT YES -40°C to 125°C SOT-23 7-in. reel, 3000 pieces/reel SS129KUA YES -40°C to 125°C TO-92 Bulk, 1000 pieces/bag SS129LSOT YES -40°C to 150°C SOT-23 7-in. reel, 3000 pieces/reel SS129LUA YES -40°C to 150°C TO-92 Bulk, 1000 pieces/bag 5 V2.10 May 1, 2012