US79

US79 Series CMOS Power Hall IC Features and Benefits ESD Tolerance IC>7,000V ESD Tolerance of Fan >15,000V Built-in Reverse Voltage Protection Built-in RFI Filter Power Efficient CMOS and Power MOSFET Drivers allow 400mA without overheating Built-in Zener Diodes Protect Outputs Eliminates all Fan Components Eliminate PC Board 5V and 12V Operation High Sensitivity for switching symmetry Locked Rotor Shutdown Applications Fan Sizes up to 90mm Current Range up to 400mA Ordering Information Part No. US79 US79 Temperature Suffix K K Package UA 8-Pin Narrow SOIC Temperature Range -40oC to 125oC -40oC to 125oC Functional Diagram Description The US79KUA is the most advanced Smart Fan Control Hall IC. It is designed for 5V and 12V cooling commutation. The chip contains many features to allow survival in a harsh environment. The IC was designed to eliminate all discrete components such as capacitors, resistors, transistors, diodes, PC board and associated labor, replacing US$0.25 to US$0.35 in direct cost. The K rating guarantees proper operation up to an ambient temperature of 125°C. Hall IC circuitry and power FET output provide a low power dissipation cool chip. - Voltage Regulator Control and Protection Hall Latch + 1 Output 1 2 GND 3 Output 2 Locked Rotor conditions are detected by the IC when there is no motion for one second and will shut off the motor drive for five seconds. Then, the IC will turn on the drive current for one second. This sequence continues indefinitely until the locked rotor condition is fixed. This feature prevents overheating. Maximum ambient temperature is determined by driver power dissipation. For instance, at 125C ambient, driver power cannot exceed 125mW or 250mA. Future versions will offer optional features. MS79 CMOS Power Hall IC ULX902xx Name of Sensor Rev Y.X Rev 3.0 22/Aug/98 23/Jan/01 Page Page 1 1 US79 Series CMOS Power Hall IC US79 Electrical Specifications DC operating parameters: TA = 25 to 125oC, VDD = 5.0 to 12V unless otherwise specified. Parameter Supply Voltage Supply Current Output leakage Output voltage Output Saturation voltage Output Saturation voltage Output On resistance Thermal resistance VDD IDD ILEAK VOUT VDSS VDSS RDDSS Rth Test Conditions Operating Operating B15000V eliminating the need for ESD concerns in the finished fan. Reverse Voltage protection is provided by the motor windings. The IC contains slew rate control on the output drivers to eliminate RF emissions. 35V Zener diodes clamp the output drivers for overstress protection. Unique Features Reverse voltage protection eliminates the need for a diode. Reverse current flows through the coils and the chip. Power dissipation is (2 * Istall/start * 0.7V). Table 1 presents max temperature for each current. Application Comments EMC protection is built in. 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 in to the chip to meet EMC requirements. Table 1 Istall / I start 100mA 200mA 300mA 400mA US79 CMOS Power Hall IC Qualification Test Results TA Maximum Rev V Test 125°C 100°C 70°C 40°C Rev 3.0 23/Jan/01 Page 2 SOA (Safe Operating Area) tests to verify inductive switching of 500mA @ 20V. 1000 pieces tested 100 cycles each. Operating Life Test at TA = 150C for 4000 hrs. 100pc. “0” failures. Package qualified to QS900 automotive PPAP specifications. US79 Series CMOS Power Hall IC US79KA Applications Schematic 5V,12V Supply US79KA Applications Schematic for Currents Greater Than 500mA VDD +12V, +24V Motor Coil US79 Motor Coil US79 500Ω 500Ω Output 1 Output 2 P-Channel FET P-Channel FET US79 Hall Plate / Chip Location Absolute Maximum Ratings Supply Voltage (Over Voltage), VDD Output Current (Fault), IOUT Operating Temperature Range, T A Storage Temperature Range, T S Maximun Junction Temp, TJ ESD Sensitivity 18V 500mA -40 to 125°C -55 to 165°C 150°C +/- 7KV U79 * 905 2.13 1.87 0.45 0.41 1.53 1.27 Marked Surface All Dimensions in millimeters * MARKING: Line 1: 1st digit (U) 2nd and 3rd digits (79) Line 2: 1st digit (9) 2nd and 3rd digits(05) = Supplier (Melexis) = Series (79xx) = Year (1999) = Week of Year 1 2 3 PINOUT: Pin 1 Pin 2 Pin 3 Output 1 GND Output 2 Melexis Inc. reserves the right to make changes without further notice to any products herein to improve reliability, function or design. Melexis does not assume any liability arising from the use of any product or application of any product or circuit described herein. MS79 CMOS Power Hall IC ULX902xx Name of Sensor Rev Y.X Rev 3.0 22/Aug/98 23/Jan/01 Page Page 3 3 US79 Series CMOS Power Hall IC UA Package Dimensions 1.60 1.40 4.30 3.90 2.64 2.34 45 o Typical For the latest version of this document, Go to our website at: www.melexis.com Or for additional information, contact Melexis directly: 5o Typical 0.84 0.63 USA Melexis Inc. 41 Locke Road, Concord, NH 03301 Phone: +1 603 223 2362 E-mail: sales_usa@melexis.com Fax: +1 603 223 9614 U79 * 905 0.48 0.43 3.20 2.80 45 o Typical 1.75 1.55 0.38 Typical (see note 3) United Kingdom Silicon Concepts PCB Lynchborough Road, Hampshire GU30 7SB, United Kingdom Phone: +44 1428 751 617 Fax: +44 1428 751 603 E-mail: sales_uk@melexis.com 0.20 0.00 0.41 0.35 1 2 3 NOTES: 1.) Controlling dimension: mm 2.) Leads must be free of flash and plating voids 3.) Leads must not arc toward the rear of package 4.) Lead frame material: EFTEC 64T 5.) Molding compound: Sumitomo EME 6300H 6.) Package dimensions exclude molding flash 7.) Tolerance is 0.254mm unless otherwise specified 2.57 2.51 0.41 0.35 Germany 11.0 10.0 Am Seestern 8, 40547 Düsseldorf, Germany Phone: +49 211 5360212 Fax: +49 211 5360250 E-mail: sales_de@melexis.com France Melexis France Tour Arago, 5 rue Bellini, 92806 Puteaux-La-Défense, France. Phone: +33 1 47 78 11 34 Fax: +33 1 47 78 06 35 E-mail: sales_france@melexis.com 1.30 1.24 Italy Dimacred IRL Via Papa Giovanni X XIII no. 25, 20046 Biassono, Italy Phone: +39 039 249 4856 Fax: +39 039 491773 E-mail: sales_italy@melexis.com Japan Satori Electric Co., LTD 1-14-10 Shiba, Minato-Ku, Tokyo, Japan Phone: +81 3 3452 7171 Fax: +81 3 3769 2197 E-mail: sales_japan@melexis.com Taiwan 8-Pin Narrow SOIC Package Dimensions 8 7 6 5 Beechwood Int’l Taiwan Co. Room 8, 17F, No. 189, Taipei, Taiwan Phone: +886 2 2739 3322 E-mail: sales_taiwan@melexis.com Fax: +886 2 2739 3090 US79SO 0012 1 2 3 4 3.81 3.99 5.79 6.20 0.38 1.27 0.33 0.51 1.27 0o to 8o Notes: 1. Measurements in millimeters. 2. Body dimensions do not include mold flash, protrusions, or burrs - not to exceed 0.15mm . 3. Lead frame material: copper 194. 4. Tolerances: +/- 0.25 mm unless otherwise indicated. 5. Pin Connections: 1 2 3 4 5 to 8 n/c Out1 VSS Out2 n/c 4.80 4.95 1.47 1.73 0.010 min. US79 CMOS Power Hall IC Rev 3.0 23/Jan/01 Page 4