Data Sheet Two Phase Dual-coil High Voltage Smart Fan Motor Driver with FG/RD General Description Features The AH9281/82 is a one-chip solution for driving two-coil brushless DC motors and fans. • • • • • • • • Based on the advanced CDMOS process, the IC contains a Hall-effect sensor, dynamic offset correction and powerful output drivers with 1200mA peak output current capability. Specially designed for driving large fans, the device is optimized for low start-up voltage. Frequency Generator or Rotation Detection is available. The open drain output makes easier the connectivity with any external interface such as hardware monitoring or Super I/O IC. • AH9281/82 High Sensitivity Integrated Hall Sensor Low Start-up Voltage 5V, 12V and 24V Operation Peak Output Current up to 1200mA Power Efficient CMOS and Power MOSFETs Built-in Output Protection Clamping Diode Locked Rotor Shutdown and Auto-restart Integrated Tachometer (AH9281) or Alarm (AH9282) Signal Output ESD Rating: 6000V (Human Body Model) 400V (Machine Model) Applications • • • • The AH9281/82 is available in TO-95 and SOT-89-5 packages. TO-95 5V/12V/24V DC Brushless Motor/Fan PC, Server, Laptop Cooling Fan Power Supply Cooling Fan Large or Small Fans SOT-89-5 Figure 1. Package Types of AH9281/82 Nov. 2010 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 1 Data Sheet Two Phase Dual-coil High Voltage Smart Fan Motor Driver with FG/RD AH9281/82 Pin Configuration Z5 Package (TO-95) R Package (SOT-89-5) GND DOB DO FG/RD VCC 5 4 3 2 1 DOB DO 5 4 1 VCC (Front View) 2 3 GND FG/RD (Top View) Figure 2. Pin Configuration of AH9281/82 Pin Description Pin Number Pin Name Function TO-95 SOT-89-5 1 1 VCC 2 3 FG/RD 3 4 DO Output pin 1 4 5 DOB Output pin 2 5 2 GND Ground pin Nov. 2010 Power supply pin Frequency Generator (Rotation Detection) open drain output Rev. 1. 2 BCD Semiconductor Manufacturing Limited 2 Data Sheet Two Phase Dual-coil High Voltage Smart Fan Motor Driver with FG/RD AH9281/82 Functional Block Diagram A (B) A for TO-95 B for SOT-89-5 Figure 3. Functional Block Diagram of AH9281/82 Nov. 2010 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 3 Data Sheet Two Phase Dual-coil High Voltage Smart Fan Motor Driver with FG/RD AH9281/82 Ordering Information AH928 - Circuit Type G1: Green 1: AH9281 2: AH9282 TR: Tape & Reel Blank: Bulk Package Z5: TO-95 R: SOT-89-5 Package Temperature Range TO-95 Output Signal Part Number Marking ID Packing Type FG AH9281Z5-G1 9281Z5-G1 Bulk RD AH9282Z5-G1 9282Z5-G1 Bulk FG AH9281RTR-G1 G41C Tape & Reel RD AH9282RTR-G1 G41D Tape & Reel -40 to 125°C SOT-89-5 BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant and green. Nov. 2010 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 4 Data Sheet Two Phase Dual-coil High Voltage Smart Fan Motor Driver with FG/RD AH9281/82 Absolute Maximum Ratings (Note 1, TA=25ºC) Parameter Supply Voltage Supply Current (Fault) Peak Output Current Continuous Output Current FG/RD Pull-up Voltage Symbol Value Unit VCC ICC 28 6 1200 600 28 V mA mA mA V IOUT_P IOUT_C VFG/VRD Power Dissipation PD Thermal Resistance (Junction to Ambient) θJA Storage Temperature ESD (Human Body Model) ESD (Machine Model) TO-95 600 SOT-89-5 800 TO-95 208 SOT-89-5 156 -55 to 150 6000 400 TSTG ESD ESD mV ºC/W ºC V V Note 1: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability. Recommended Operating Conditions Parameter Symbol Min Max Unit Supply Voltage VCC 2.5 24 (Note 2) V Operating Ambient Temperature TA -40 125 ºC Note 2: It is recommended to add a 680Ω resistor at VCC if the supply voltage is 24V. Nov. 2010 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 5 Data Sheet Two Phase Dual-coil High Voltage Smart Fan Motor Driver with FG/RD AH9281/82 Electrical Characteristics VCC=12V, TA=25oC, unless otherwise specified. Parameter Symbol Conditions Supply Voltage VCC Operating Supply Current Output Current Output Leakage Current Saturation Voltage Output ON Time Output OFF Time ICC IOUT Average FG/RD Output Low Voltage FG/RD Output Leakage Current FG/RD Output Current Limit Output Zener Break-down Voltage ILEAKAGE VSAT tON tOFF Min Typ 2.5 12 4 0.1 600 0.8 5 IOUT=350mA Max Unit 24 (Note 2) 6 500 10 1000 mA mA V µA mV S S VFGL/VRDL IFG=5mA 0.1 0.2 V IFGLK/IRDLK VFG /VRD=12V 0.1 10 µA IFGLIM/ IRDLIM VFG/VRD=12V 30 mA 35 V VZ Magnetic Characteristics VCC=12V, TA=25oC, unless otherwise specified. Parameter Symbol Min Typ Max Unit Operating Point BOP 0 20 50 Gauss Releasing Point BRP -50 -20 0 Gauss Hysteresis BHYS Nov. 2010 40 Rev. 1. 2 Gauss BCD Semiconductor Manufacturing Limited 6 Data Sheet Two Phase Dual-coil High Voltage Smart Fan Motor Driver with FG/RD AH9281/82 Test Circuit S Marking Side N Figure 4. Basic Test Circuit of AH9281/82 VDO( V) VCC VDOB(V) 12 12 10 10 8 8 6 6 4 4 2 2 VSAT VSAT 0 -40 -20 0 20 0 -40 40 -20 0 20 40 Magnetic Flux Density B (GS) Magnetic Flux Density B (GS) Figure 5. VDO vs. Magnetic Flux Density Nov. 2010 VCC Figure 6. VDOB vs. Magnetic Flux Density Rev. 1. 2 BCD Semiconductor Manufacturing Limited 7 Data Sheet Two Phase Dual-coil High Voltage Smart Fan Motor Driver with FG/RD AH9281/82 Typical Performance Characteristics 6.0 6.0 5.5 5.5 5.0 Supply Current (mA) Supply Current (mA) 5.0 4.5 4.0 3.5 3.0 2.5 4.5 4.0 3.5 3.0 2.5 2.0 1.5 2.0 o TA=25 C o TA=25 C 1.0 1.5 VCC=12V 0.5 1.0 4 8 12 16 20 0.0 -40 24 -20 0 20 40 60 80 100 120 o Ambient Temperature ( C) Supply Voltage (V) Figure 7. Supply Current vs. Supply Voltage Figure 8. Supply Current vs. Ambient Temperature 50 100 40 o TA=25 C 30 BOP/BRP/BHYS (Gauss) BOP/BRP/BHYS (Gauss) 75 50 25 0 -25 BOP 12 16 20 24 BHYS -20 VCC=12V -20 0 20 40 60 80 100 120 o Ambient Temperature ( C) Supply Voltage (V) Figure 9. BOP/BRP/BHYS vs. Supply Voltage Nov. 2010 BRP -10 -50 -40 -75 8 BOP 0 -40 BHYS 4 10 -30 BRP -50 20 Figure 10. BOP/BRP/BHYS vs. Ambient Temperature Rev. 1. 2 BCD Semiconductor Manufacturing Limited 8 Data Sheet Two Phase Dual-coil High Voltage Smart Fan Motor Driver with FG/RD AH9281/82 Typical Performance Characteristics (Continued) 1000 1200 VCC=12V Saturation Voltage (mV) Saturation Voltage (mV) 900 800 700 600 IOUT=150mA 500 IOUT=350mA 400 1000 800 600 400 o TA=25 C 300 200 VCC=12V 200 100 -40 0 -20 0 20 40 60 80 100 0 120 100 200 o Figure 11. Saturation Voltage vs. Ambient Temperature 400 500 600 Figure 12. Saturation Voltage vs. Output Current 600 800 Power Dissipation (mW) Package: TO-95 Power Dissipation (mW) 300 Output Current (mA) Ambient Temperature ( C) 500 400 300 200 Package: SOT-89-5 600 400 200 100 0 0 -25 0 25 50 75 100 125 -25 150 25 50 75 100 125 150 o Ambient Temperature ( C) Figure 13. Power Dissipation vs. Ambient Temperature Nov. 2010 0 Ambient Temperature ( C) o Figure 14. Power Dissipation vs. Ambient Temperature Rev. 1. 2 BCD Semiconductor Manufacturing Limited 9 Data Sheet Two Phase Dual-coil High Voltage Smart Fan Motor Driver with FG/RD AH9281/82 Typical Application Figure 15. Typical Application of AH9281/82 (5V/12V Brushless DC Fan, TO-95, Note 3) Figure 16. Typical Application of AH9281/82 (5V/12V Brushless DC Fan, SOT-89-5, Note 3) Note 3: 1. The recommended value of RPU is 4.7kΩ typical. 2. It is better to use typical 2.2µF electrolytic capacitors as C1, C2 and C3. 3. D1 is an ordinary diode which can block the reverse current from coil side. The Diode which is shown by dashed pane can be absence if no special system requirement. Nov. 2010 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 10 Data Sheet Two Phase Dual-coil High Voltage Smart Fan Motor Driver with FG/RD AH9281/82 Typical Application (Continued) Figure 17. Typical Application of AH9281/82 (24V Brushless DC Fan, TO-95, Note 4) Figure 18. Typical Application of AH9281/82 (24V Brushless DC Fan, SOT-89-5, Note 4) Note 4: 1. The recommended value of R1 and RPU is 680Ω and 10kΩ typical respectively. 2. It is better to use typical 2.2µF electrolytic capacitors as C1, C2 and C3. 3. D1 is an ordinary diode which can block the reverse current from coil side. Nov. 2010 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 11 Data Sheet Two Phase Dual-coil High Voltage Smart Fan Motor Driver with FG/RD AH9281/82 Mechanical Dimensions TO-95 Unit: mm(inch) 1.295(0.051) 1.803(0.071) 0.610(0.024) MIN 2.250(0.089) 2.450(0.096) 1.150(0.045) 1.350(0.053) 3.531(0.139) 3.785(0.149) Package Sensor Location (For Hall IC) 1.220(0.048) 1.620(0.064) 0.381(0.015) 0.581(0.023) 14.000(0.551) 16.000(0.630) 0.360(0.014) 0.510(0.020) 0.950(0.037) REF 0.330(0.013) 0.432(0.017) 5.105(0.201) 5.359(0.211) Nov. 2010 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 12 Data Sheet Two Phase Dual-coil High Voltage Smart Fan Motor Driver with FG/RD AH9281/82 Mechanical Dimensions (Continued) SOT-89-5 Unit: mm(inch) 4. 400(0.173) 4. 600(0.181) 1.400(0. 055) 1. 600(0. 063) 1. 400(0.055) 1. 800(0.071) 0.950(0.037) 1.250(0.049) 2.300(0.091) 2.600(0.102) Package Sensor Location (For Hall IC) 1.713(0.067) 2.013(0.079) 0.320(0. 013) 0.520(0. 020) 0. 360(0.014) 0.350(0. 014) 0.440(0. 017) 0. 560(0.022) 1. 500(0.060) TYP 2. 900(0. 114) 3. 100(0.122) Nov. 2010 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 13 BCD Semiconductor Manufacturing Limited http://www.bcdsemi.com IMPORTANT NOTICE IMPORTANT NOTICE BCD Semiconductor BCD Semiconductor Manufacturing Manufacturing Limited Limited reserves reserves the the right right to to make make changes changes without without further further notice notice to to any any products products or or specifispecifications herein. cations herein. BCD BCD Semiconductor Semiconductor Manufacturing Manufacturing Limited Limited does does not not assume assume any any responsibility responsibility for for use use of of any any its its products products for for any any particular purpose, particular purpose, nor nor does does BCD BCD Semiconductor Semiconductor Manufacturing Manufacturing Limited Limited assume assume any any liability liability arising arising out out of of the the application application or or use use of any of any its its products products or or circuits. circuits. BCD BCD Semiconductor Semiconductor Manufacturing Manufacturing Limited Limited does does not not convey convey any any license license under under its its patent patent rights rights or or other rights other rights nor nor the the rights rights of of others. others. MAIN SITE SITE MAIN - Headquarters BCD Semiconductor Manufacturing Limited BCD Semiconductor Manufacturing Limited - Wafer Fab No. 1600, Zi Xing Road, Shanghai ZiZhu Science-basedLimited Industrial Park, 200241, China Shanghai SIM-BCD Semiconductor Manufacturing Tel: Fax: +86-21-24162277 800,+86-21-24162266, Yi Shan Road, Shanghai 200233, China Tel: +86-21-6485 1491, Fax: +86-21-5450 0008 REGIONAL SALES OFFICE Shenzhen OfficeSALES OFFICE REGIONAL - Wafer FabSemiconductor Manufacturing Limited BCD Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd. - IC Design Group 800 Yi Shan Road, Shanghai 200233, China Corporation Advanced Analog Circuits (Shanghai) Tel: +86-21-6485 1491,YiFax: 0008200233, China 8F, Zone B, 900, Shan+86-21-5450 Road, Shanghai Tel: +86-21-6495 9539, Fax: +86-21-6485 9673 Taiwan Office Shanghai Semiconductor Manufacturing Co., Ltd., Shenzhen Office BCD Taiwan Semiconductor Shenzhen SIM-BCD Office Office (Taiwan) Company Limited Unit A Room 1203, Skyworth Bldg., Gaoxin Ave.1.S., Nanshan Shenzhen, 4F, 298-1, Guang Road,(Taiwan) Nei-Hu District, Taipei, Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd.District, Shenzhen Office BCDRui Semiconductor Company Limited China Taiwan Advanced Analog Circuits (Shanghai) Corporation Shenzhen Office 4F, 298-1, Rui Guang Road, Nei-Hu District, Taipei, Tel: +86-755-8826 Tel: +886-2-2656 2808 Room E, 5F, Noble 7951 Center, No.1006, 3rd Fuzhong Road, Futian District, Shenzhen 518026, China Taiwan Fax: +86-755-88267951 7865 Fax: +886-2-2656 28062808 Tel: +86-755-8826 Tel: +886-2-2656 Fax: +86-755-8826 7865 Fax: +886-2-2656 2806 USA Office BCD Office Semiconductor Corp. USA 30920Semiconductor Huntwood Ave.Corporation Hayward, BCD CA 94544, USA Ave. Hayward, 30920 Huntwood Tel :94544, +1-510-324-2988 CA U.S.A Fax:: +1-510-324-2988 +1-510-324-2788 Tel Fax: +1-510-324-2788