Ordering number : ENA2142 LB11668MC Monolithic Digital IC For Fan Motor http://onsemi.com Two-Phase Half-Wave Driver Overview The LB11668MC is a two-phase uni-polar brushless motor driver for fan motor. Functions • Two-phase half-wave drive. • RD (lock detection) outputs incorporated. • FG (rotation detection) outputs incorporated. • Thermal shutdown circuit incorporated. • Lock protection and automatic return function incorporated. • Output protection zener diode incorporated. • Hall input amplifier incorporated. Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum inflow current Output current Symbol Conditions IIN max Ratings Unit 100 mA IOUT ave 400 mA IOUT peak 800 mA Output withstand voltage VOUT max Internal RD output current IRD max 10 RD output withstand voltage VRD max 28 V Allowable dissipation Pd max 750 mW Operating temperature Topr -30 to +85 °C Storage temperature Tstg -55 to +150 °C Mounted on a board * V mA * Specified board : 114.3mm × 76.1mm × 1.5mm, glass epoxy board. Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. Semiconductor Components Industries, LLC, 2013 May, 2013 N0712NKPC 20121001-S00001 No.A2142-1/7 LB11668MC Recommended Operating Conditions at Ta = 25°C Parameter Symbol Inflow current range IIN1 Common-mode input voltage range VCOM Conditions Ratings Unit 5 to 25 0.2 to VIN -2.3 mA V Electrical Characteristics at Ta = 25°C, VCC = 24V, R1 = 1kΩ, unless otherwise specified. Parameter Symbol Ratings Conditions min VIN voltage VIN IIN = 6mA CT capacitor charging current ICT1 CT = 0V Capacitor discharging current ICT2 CT = 6.0V Capacitor charging/ RCT CT charging voltage CT discharging voltage Unit typ 6.9 max 7.2 7.6 V 0.8 1.2 2.0 μA 0.12 0.24 0.4 μA RCT = ICT1 / ICT2 4.0 5.0 7.0 VCTH VCT/VIN 66 70 74 % VCTL VCT/VIN 36 40 44 % Output limit withstand voltage VOLM IO = 10mA 50 53 56 V Output saturation voltage VOL1 IO = 200mA 0.85 1.1 V Hall input sensitivity VHN Including offset and hysteresis 8 18 mV RD output saturation voltage VRD IRD = 5mA 0.2 0.5 V RD output leak current IRD VRD = 14V 0.1 10 μA Thermal protection function VTH Design target value * 180 210 °C discharging current ratio 150 operating temperature * "Design" is a design target and is not measured. Package Dimensions unit : mm (typ) 3426A 4.9 5 0.41 1.75 MAX 0.21 0.8 0.6 0.4 0.39 0.2 0 --30 0 30 60 90 120 Ambient temperature, Ta -- °C 1.5 1.0 Pd max -- Ta Mounted on the specified board: 114.3×76.1×1.6mm3 glass epoxy 0.175 1 0.835 0.37 6.0 6 3.9 10 Allowable power dissipation, Pd max -- W 1.0 SANYO : SOIC10 No.A2142-2/7 LB11668MC Pin Assignment RD 1 10 VIN IN+ 2 9 CT NC 3 8 NC IN- 4 7 OUT2 OUT1 5 6 GND LB11668MC Top view Block Diagram L1 R1 Thermal protection VIN VCC L2 OUT1 IN+ Control block IN- H OUT2 RD Constant current circuit CT C1 GND 0.1 to 1μF Truth table IN- IN+ H L L H - - CT L H OUT1 OUT2 L H H L OFF OFF RD Mode L Rotation H Lock protection No.A2142-3/7 LB11668MC VIN1 IIN=6mA A V 10 9 8 7 6 VIN CT NC OUT2 GND RD IN+ NC IN- OUT1 1 2 3 4 5 ICT1 A VCC=24V R1=1kΩ 10 9 8 7 6 VIN CT NC OUT2 GND RD IN+ NC IN- OUT1 1 2 3 4 5 ICT2 A VCC=24V R1=1kΩ VCT=6V 10 9 8 7 6 VIN CT NC OUT2 GND RD IN+ NC IN- OUT1 1 2 3 4 5 RCT=ICT1/ICT2 No.A2142-4/7 LB11668MC VCTH, VCTL 10kΩ R1=1kΩ VCT V VCC=24V VM 10 9 8 7 6 VIN CT NC OUT2 GND RD IN+ NC IN- OUT1 1 2 3 4 5 VOLM VCC=24V R1=1kΩ 10 9 8 7 6 VIN CT NC OUT2 GND RD IN+ NC IN- OUT1 1 2 3 4 5 V IO=10mA VOL1 IO=500mA VCC=24V V R1=1kΩ 10 9 8 7 6 VIN CT NC OUT2 GND RD IN+ NC IN- OUT1 1 2 3 4 5 No.A2142-5/7 LB11668MC VHN 10kΩ R1=1kΩ VM VCC=24V 10 9 8 7 6 VIN CT NC OUT2 GND RD IN+ NC IN- OUT1 1 2 3 4 5 1V V VRD VCC=24V R1=1kΩ 10 9 8 7 6 VIN CT NC OUT2 GND RD IN+ NC IN- OUT1 1 2 3 4 5 V IRD=5mA VRL VCC=24V VCT=6V R1=1kΩ 10 9 8 7 6 VIN CT NC OUT2 GND RD IN+ NC IN- OUT1 1 2 3 4 5 A VRD=14V No.A2142-6/7 LB11668MC Application Circuit Example 24V power supply VCC R1=1kΩ VIN R2=2kΩ H IN+ OUT1 IN- OUT2 CT RD 0.1 to 1μF GND Substrate parts Notice • Take care not to cause interference due to wiring of IN- and OUT1. • In an application of connecting the CT pin to GND, lock protection and restart function are not effective. • With reverse power - GND connection in the above application figure, the current restricted by the coil resistance flows from GND → OUT → coil → power supply. IC breakage does not occur if the current value is 500mA or less. If necessary, insert Di between VCC and coil. ON Semiconductor and the ON logo are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf. SCILLC reserves the right to make changes without further notice to any products herein. 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