US63EVK-AAA-001-BU Melexis

US6622 // US63 Two-ccoil Fan Driver Features and Benefits Application Examplles 0 Low cost 0 5/12V fans 0 High sensitivity Hall Sensor 0 Peak current up to 700mAA 0 Locked rotor protection and auto-rrestart 0 Power-efficient CMOS and poweerr MOSFETs 0 Built-in output protection clampinngg diode 0 Integrated tachometer (US62) or aalarm (US63) signal protected output 0 2-coil fan driver with FG/RD outpuutt in 4-pin VK package RoHS Compliaanntt Ordering Code Product Code Temperature Code Package Code Option Code PPaacckkiinngg FFoorrmm CCooddee US63 E VK AAA-000 BBUU US62 E VK AAA-000 BBUU Legend: Temperature Code: E ffoorr TTeemmppeerraattuurree RRaannggee -40C to 85C Package Code: VVKK ffoorr Plastic Single in Line Option Code: xxx-000000:: ssttaannddaarrdd VVeerrssiioonn Packing Form: BBUU ffoorr BBuullkk Ordering example: UUSS6633EEVVKK-AAA-000-BU 1 Functional Diagram 2 General Descriptiioon The US62/63 is a one-chip soluution for driving two- coil brushless DC cooling fans.. Based on the advanced Melexiis CMOS process, the IC contains a Hall-effect seennsor, dynamic offset correction and low side ooutput drivers. Frequency Generator or Rotatiion Detection is available. The open-drain ouuttppuutt makes easier the connectivity with any external inntteerface such as hardware monitoring or Super II//OO IC. These features are combined wwith the Melexis patented no-V design to fit thhe IC in a small 4- DD pin VK package. Data Sheet Page 1 of 11 3901000062 Apr/12 Rev 003 US62 / US63 Two-coil Fan Driver 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 Characteristics ............................................................................................... 4 8 Driver Output vs Magnetic Pole ..................................................................................... 4 9 Detailed General Description ......................................................................................... 5 10 Unique Features ............................................................................................................ 5 11 Performance Graphs .................................................................................................... 6 11.1 R vs T ............................................................................................................... 6 DSON J 11.2 R vs V ............................................................................................................. 6 DSON DD 11.3 Magnetic Parameters vs T ....................................................................................... 6 J 11.4 Magnetic Parameters vs V ..................................................................................... 6 DD 11.5 I vs V .................................................................................................................. 6 DD DD 12 Test conditions ............................................................................................................. 7 12.1 V operating ......................................................................................................... 7 DD 12.2 R ........................................................................................................................ 7 DSON 12.3 I ............................................................................................................................. 7 DD 12.4 FG/RD Output Low Voltage ...................................................................................... 7 13 Application Information................................................................................................ 8 13.1 Typical application with pull-up resistor..................................................................... 8 13.2 Configuration for reverse voltage / ground hot-switch protection .............................. 8 14 Application Comments ................................................................................................. 8 15 Standard information regarding manufacturability of Melexis products with different soldering processes........................................................................................... 9 16 ESD Precautions ........................................................................................................... 9 17 VK Package Information (4-pin TO-92)...................................................................... 10 18 Disclaimer.................................................................................................................... 11 Data Sheet Page 2 of 11 3901000062 Apr/12 Rev 003