US1881 Hall Latch High Sensitivity Features and Benefits Applications Wide operating voltage range from 3.5V to 24V Automotive, Consumer and Industrial High magnetic sensitivity Multi-purpose Solid-state switch CMOS technology Brushless DC motor commutation Chopper-stabilized amplifier stage Speed detection Low current consumption Linear position detection Open drain output Angular position detection Thin SOT23 3L and flat TO-92 3L both RoHS Proximity detection Compliant packages Ordering information Product code Temperature Code Package Code Option code Packing form code US1881 E SE AAA-000 RE US1881 E UA AAA-000 BU US1881 K SE AAA-000 RE US1881 K UA AAA-000 BU US1881 L SE AAA-000 RE US1881 L UA AAA-000 UA Legend: Temperature code: L(-40 to 150C) E(-40 to 85C) K (-40 to 125C) Package Code: SE = TSOT-23L UA = TO92-3L Packing Form: BU = Bulk RE = Reel Ordering Example: US1881ESE-AAA-000-RE 1. Functional Diagram 2. General Description The Melexis US1881 is a Hall-effect latch 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 quite suitable for use in automotive, industrial and consumer 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. REVISION 019 - 13 JUNE 2019 Page 1 of 12 3901001881 US1881 Hall Latch High Sensitivity Contents Features and Benefits ................................................................................................................................ 1 Applications ............................................................................................................................................... 1 Ordering information ................................................................................................................................. 1 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. Magnetic parameters vs. T .............................................................................................................. 6 A 11.2. Magnetic parameters vs. V .......................................................................................................... 6 DD 11.3. V vs. T ........................................................................................................................................ 6 DSON A 11.4. V vs. V ...................................................................................................................................... 6 DSON DD 11.5. I vs. T ............................................................................................................................................ 6 DD A 11.6. I vs. V ........................................................................................................................................... 6 DD DD 11.7. I vs. T ........................................................................................................................................... 7 OFF A 11.8. I vs. V .......................................................................................................................................... 7 OFF DD 12. Test Conditions .................................................................................................................................... 7 12.1. Supply Current .................................................................................................................................. 7 12.2. Output Saturation Voltage ............................................................................................................... 7 12.3. Output Leakage Current ................................................................................................................... 7 12.4. Magnetic Thresholds ........................................................................................................................ 7 13. Application Information ....................................................................................................................... 8 13.1. Typical Three-Wire Application Circuit ............................................................................................ 8 13.2. Two-Wire Circuit ............................................................................................................................... 8 13.3. Automotive and Harsh, Noisy Environments Three-Wire Circuit ................................................... 8 14. Application Comments ......................................................................................................................... 8 15. Standard information regarding manufacturability of Melexis products with different soldering processes .............................................................................................................................................. 9 16. ESD Precautions ................................................................................................................................... 9 17. Package Information .......................................................................................................................... 10 17.1. SE Package (TSOT-3L) ..................................................................................................................... 10 17.2. UA Package (TO-92 flat) .................................................................................................................. 11 18. Contact .............................................................................................................................................. 12 19. Disclaimer .......................................................................................................................................... 12 REVISION 019 - 13 JUNE 2019 Page 2 of 12 3901001881