158 Adafruit

US5881 Unipolar Hall Switch Low Sensitivity Features and Benefits Application Examples Wide operating voltage range from 3.5V to 24V Automotive, Consumer and Industrial Low sensitivity Solid-state switch CMOS technology Interrupter Chopper-stabilized amplifier stage Current detector Low current consumption Proximity detection Open drain output Thin SOT23 3L and flat TO-92 3L both RoHS Compliant packages Ordering Information Part No. Temperature Code Package Code US5881 E (-40C to 85C) SE (TSOT-3L) US5881 E (-40C to 85C) UA (TO-92) US5881 L (-40C to 150C) SE (TSOT-3L) US5881 L (-40C to 150C) UA (TO-92) 1 Functional Diagram 2 General Description The Melexis US5881 is a unipolar Hall-effect switch designed in mixed signal CMOS technology. The device integrates a voltage regulator, Hall sensor with dynamic offset cancellation system, Schmitt trigger and an open-drain output driver, all in a single package. Thanks to its wide operating voltage range and extended choice of temperature range, it is suitable for use in automotive and solid state switch applications. The device is delivered in a Thin Small Outline Transistor (TSOT) for surface mount process and in a Plastic Single In Line (TO-92 flat) for through- hole mount. Both 3-lead packages are RoHS compliant. 3901005881 Page 1 of 11 Data Sheet Rev 007 Feb/06 US5881 Unipolar Hall Switch Low Sensitivity Table of Contents 1 Functional Diagram ........................................................................................................ 1 2 General Description........................................................................................................ 1 3 Glossary of Terms .......................................................................................................... 3 4 Absolute Maximum Ratings........................................................................................... 3 5 Pin Definitions and Descriptions................................................................................... 3 6 General Electrical Specifications .................................................................................. 4 7 Magnetic Specifications ................................................................................................. 4 8 Output Behaviour versus Magnetic Pole ...................................................................... 4 9 Detailed General Description......................................................................................... 5 10 Unique Features............................................................................................................ 5 11 Performance Graphs .................................................................................................... 6 11.1 Typical Magnetic Switch Points vs V ....................................................................................................6 DD 11.2 Magnetic Switch Points vs Temperature .................................................................................................6 11.3 Typical Supply Current vs V .................................................................................................................6 DD 11.4 Typical Saturation Voltage vc Temperature (VDD=12V Iout=20mA) .....................................................6 12 Application Information................................................................................................ 7 12.1 Typical Three-Wire Application Circuit ....................................................................................................7 12.2 Two-Wire Circuit ......................................................................................................................................7 12.3 Automotive and Harsh, Noisy Environments Three-Wire Circuit ............................................................7 13 Application Comments................................................................................................. 7 14 Standard information regarding manufacturability of Melexis products with different soldering processes........................................................................................... 8 15 ESD Precautions........................................................................................................... 8 16 Package Information..................................................................................................... 9 16.1 SE Package (TSOT-3L)...........................................................................................................................9 16.2 UA Package (TO-92 flat) .......................................................................................................................10 17 Disclaimer.................................................................................................................... 11 3901005881 Page 2 of 11 Data Sheet Rev 007 Feb/06