US90/91 24VHall IC Fan Driver Features and Benefits Power efficient CMOS and Power MOSFET technology Built-in Zener diodes protection for the power outputs One chip solution SOIC-8 package High sensitivity Locked Rotor shutdown and auto-restart Applications Current Range up to 500mA Peak For 12V/24V Fans Ordering Information Part No. US90 US91 Temperature Suffix E (-40°C to 85°C) E (-40°C to 85°C) Functional Diagram Package Code SO (8-Pin Narrow SOIC) SO (8-Pin Narrow SOIC) Description US90: The Tachometer/Frequency Generator (FG) version produces a logic signal, which is aligned with the Hall plate signal. US91: The Rotation Detector (RD) / Alarm Signal version has a low output in the normal condition. When a locked rotor condition occurs the RD output changes to a high state. MLX902xx Name of Sensor 3901090263 Rev. 003 Rev Y.X 1 Page 22/Aug/98 Page 1 Oct/02 US90/91 24VHall IC Fan Driver Absolute Maximum Ratings Supply Voltage (Over Voltage), VDD Output Current (Fault), IOUT 30V 500mA Operating Temperature Range, TA -40 to 85°C Storage Temperature Range, TS -55 to 150°C Junction Temperature, TJ 125°C Exceeding the absolute maximum ratings may cause permanent damage. Exposure to absolutemaximum-rated conditions for extended periods may affect device reliability. US90/91 Electrical Specifications DC operating parameters: TA = 25 oC, VDD = 24V unless otherwise specified. Parameter Test Conditions Min Typ Max Units Fan Supply Voltage VDD Operating 5 - 30 V Supply Current IDD Vdd=5 to 30V - 2.0 4 mA Output voltage Clamp VOUT B<BHYS - 65 - V Output Saturation voltage VDSS IOUT = 150mA - 375 - mV Output Saturation voltage VDSS IOUT = 250mA - 625 - mV Operating - 200 - °C/Watt Thermal resistance Rth Locked rotor protection on TLRP-ON - 0.25 - Sec Locked rotor protection off TLRP-OFF - 1.5 - Sec FG/RD output Vds Vo-LOW - - 0.5 V FG/RD output high clamp Vo-HIGH 28 - - V Max Units IOUT = 10mA US90/91 Magnetic Specifications DC operating parameters: TA = 25oC, VDD = 24V unless otherwise specified. 1 mT = 10 Gauss. Parameter Symbol Test Conditions Min Typ Operate Point BOP Operating - 3.0 6.0 mT Release Point BRP Operating -6.0 -3.0 - mT Hysteresis BHYS Operating - 6.0 - mT 3901090263 Rev. 003 Page 2 Oct/02 US90/91 24VHall IC Fan Driver Applications Notes Without reverse bias protection diode Recommended with higher than 120 ohm With reverse bias protection diode Recommended with lower than 60 ohm coil Applications Comments EMC protection is built into the power outputs. EMC considerations require that the fan assembly should tolerate ESD, reverse voltage, over voltage and not radiate RF noise, which may interfere with other electronic equipment. These capabilities are built into the chip to meet EMC requirements. Start and Run Current US90/91 maximum starting current is 500mA. Recommended maximum run current is 250mA. Power supply voltage. US90/91 are designed for 24V fan. It is recommended that fan operating voltage does not exceed 30V and that the supply + BEMF be no more than 60V. Temperature US90S/91S function up to a junction temperature of 125°C. Hall IC circuitry and power FET outputs provide low power dissipation, and a cool chip. Locked Rotor conditions are detected by the IC when there is no motion for 0.25 seconds and will shut off the motor drive for 1.5 second, then turn on the drive current for 0.25 seconds. This sequence will continue indefinitely until the locked rotor condition is fixed. This feature prevents overheating. MLX902xx Name of Sensor 3901090263 Rev. 003 Rev Y.X 3 Page 22/Aug/98 Page 3 Oct/02 US90/91 24VHall IC Fan Driver US90/91 Hall Plate Location 3901090263 Rev. 003 Page 4 Oct/02 US90/91 24VHall IC Fan Driver Package Dimensions SO: 8-Pin narrow SOIC Reel Information is attached ref SOIC08AC90.OP2 There are 2600 parts/reel MLX902xx Name of Sensor 3901090263 Rev. 003 Rev Y.X 5 Page 22/Aug/98 Page 5 Oct/02 US90/91 24VHall IC Fan Driver Reliability information Melexis devices are classified and qualified regarding suitability for infrared, vapor phase and wave soldering with usual (63/37 SnPb-) solder (melting point at 183degC). The following test methods are applied: • • • IPC/JEDEC J-STD-020A (issue April 1999) Moisture/Reflow Sensitivity Classification For Nonhermetic Solid State Surface Mount Devices CECC00802 (issue 1994) Standard Method For The Specification of Surface Mounting Components (SMDs) of Assessed Quality MIL 883 Method 2003 / JEDEC-STD-22 Test Method B102 Solderability For all soldering technologies deviating from above mentioned standard conditions (regarding peak temperature, temperature gradient, temperature profile etc) additional classification and qualification tests have to be agreed upon with Melexis. The application of Wave Soldering for SMD’s is allowed only after consulting Melexis regarding assurance of adhesive strength between device and board. For more information on manufacturability/solderability see quality page at our website: http://www.melexis.com/ ESD Precautions Electronic semiconductor products are sensitive to Electro Static Discharge (ESD). Always observe Electro Static Discharge control procedures whenever handling semiconductor products. 3901090263 Rev. 003 Page 6 Oct/02 US90/91 24VHall IC Fan Driver Disclaimer Devices sold by Melexis are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. Melexis makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. Melexis reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with Melexis for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or lifesustaining equipment are specifically not recommended without additional processing by Melexis for each application. The information furnished by Melexis is believed to be correct and accurate. However, Melexis shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interrupt of business or indirect, special incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of Melexis’ rendering of technical or other services. © 2002 Melexis NV. All rights reserved. For the latest version of this document, go to our website at: www.melexis.com Or for additional information contact Melexis Direct: Europe and Japan: All other locations: Phone: +32 13 67 04 95 Phone: +1 603 223 2362 E-mail: [email protected] E-mail: [email protected] QS9000, VDA6.1 and ISO14001 Certified MLX902xx Name of Sensor 3901090263 Rev. 003 Rev Y.X 7 Page 22/Aug/98 Page 7 Oct/02