Product Brief Two Phase Dual-coil High Voltage Smart Fan Motor Driver with FG/RD Description Parametric Table The AH9281/82 is a one-chip solution for driving two-coil brushless DC motors and fans. Supply Voltage (V) 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. The AH9281/82 is available in TO-95 and SOT-89-5 packages. • 2.5 to 24 Output Saturation Voltage (VCC=12V, IOUT=350mA) (V) 0.6 FG/RD Output Low Voltage (VCC=12V, IFG=5mA) (V) 0.1 Supply Current (mA) 4 Output ON Time (S) 0.8 Output OFF Time (S) 5 Operating Point (Gauss) 20 Releasing Point (Gauss) -20 Hysteresis (Gauss) 40 Benefits Features • • • • • • • • 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) Minimum External Components Low Startup Voltage Locked Protection and Auto-restart With FG or RD Output Wide Operation Voltage Range Excellent Temperature Performance High Sensitivity for Switching Symmetry High ESD and Power Efficient Additional Available Materials • • • • Applications • • • • 5V/12V/24V DC Brushless Motor/Fan PC, Server, Laptop Cooling Fan Power Supply Cooling Fan Large or Small Fans Mar. 2010 Samples Preliminary Datasheet Reliability Report ESD Report BCD Semiconductor Manufacturing Limited 1 Product Brief 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 2 VCC (Front View) 3 GND FG/RD (Top View) Ordering Information Example 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 Detailed information please refer to the relevant datasheet. Sales Office: Shanghai No. 1600, Zi Xing Road, Shanghai ZiZhu Science-based Industrial Park, 200241, China Tel : 86-21-24162266 Fax : 86-21-24162277 USA 30920 Huntwood Ave. Hayward, CA 94544, USA Tel : +1-510-324-2988 Fax : +1-510-324-2788 Taiwan 4F, 298-1 Rui Guang Road, Nei-Hu District, Taipei, Taiwan Tel : 886-2-2656-2808 Fax : 886-2-2656-2806 Shenzhen Unit A Room 1203, Skyworth Bldg., Gaoxin Ave.1.S., Nanshan District, Shenzhen, China Tel : 86-755-8826 7951 Fax : 86-755-8826 7865 Mar. 2010 BCD Semiconductor Manufacturing Limited 2