LB11867FV Monolithic Digital IC For Fan Motor www.onsemi.com Variable Speed Single-phase Full-wave Pre-driver Overview LB11867FV is a single-phase bipolar driving motor pre-driver with the variable speed function compatible with external PWM signal. With a few external parts, a highly-efficient and highly-silent variable drive fan motor with low power consumption can be achieved. This product is best suited for driving of the server requiring large air flow and large current and the fan motor of consumer appliances. Feature SSOP16 (225mil) Single-phase full-wave driving pre-driver Low-saturation drive using external PMOS-NMOS enables high-efficiency low power-consumption drive. Variable speed control possible with external PWM input Separately-excited upper direct PWM (f =30kHz) control method ensures highly silent speed control. Current limiting circuit incorporated Chopper type current limiting made at startup and during lock. Reactive current cut circuit incorporated Reactive current before phase changeover is cut, ensuring highly silent and low power-consumption drive. Minimum speed setting pin Minimum speed can be set by setting the resistance. Soft start setting pin Lock protection and automatic reset circuits incorporated FG (rotation speed detection) output Thermal shutdown circuit incorporated Typical Applications Computing & Peripherals Industrial Server Vending Machine ORDERING INFORMATION See detailed ordering and shipping information on page 11 of this data sheet. © Semiconductor Components Industries, LLC, 2015 June 2015 - Rev. 1 1 Publication Order Number : LB11867FV/D LB11867FV Specifications Absolute Maximum Ratings at Ta = 25C Parameter Symbol VCC pin maximum supply voltage VCC max 18 V IOUTN max 20 mA OUTP pin maximum Sink current IOUTP max 20 mA OUT pin output withstand voltage VOUT max 18 V VTH, RMI pins withstand voltage V OUTN pin maximum output Conditions Ratings Unit current VVTH, VRMI max 7 S-S pin withstand voltage VS-S max 7 V FG output pin withstand voltage VFG max 19 V FG pin maximum output current 5VREG pin maximum output IFG max 10 mA I5VREG max 20 mA 800 mW current Allowable power dissipation Pd max Operating temperature Topr Storage temperature Tstg with specified substrate *1 *2 -30 to 95 C -55 to 150 C *1 Specified substrate: 114.3mm76.1mm1.6mm, glass epoxy board. *2 Tj max=150°C must not be exceeded. 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. Recommended Operating Conditions at Ta = 25C Parameter VCC Supply voltage VTH, RMI input voltage range Hall input common-phase input Symbol Conditions VCC VTH, RMI VICM Ratings Unit 5.5 to 16 V 0 to 5 V 0.2 to 3 V voltage range Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended Operating Ranges limits may affect device reliability. www.onsemi.com 2 LB11867FV Electrical Characteristics at Ta 25C, VCC = 12V Parameter Circuit current 5VREG voltage Symbol Conditions Ratings min typ Unit max ICC1 During drive 5.5 7.5 9.5 mA ICC2 During lock protection 5.5 7.5 9.5 mA 4.80 4.95 5.10 V VLIM 185 200 215 mV CPWM pin “H” level voltage VCPWMH 2.8 3.0 3.2 V CPWM pin “L” level voltage VCPWML 0.9 1.1 1.3 V CPWM pin charge current ICPWM1 VCPWM = 0.5V 24 30 36 A CPWM pin discharge current ICPWM2 VCPWM = 3.5V 21 27 33 A CPWM Oscillation frequency FPWM CT pin “H” level voltage VCTH 2.8 3.0 3.2 V CT pin “L” level voltage VCTL 0.9 1.1 1.3 V CT pin charge current ICT1 VCT = 0.5V 1.6 2.0 2.5 μA CT pin discharge current ICT2 VCT = 3.5V 0.16 0.20 0.25 CT pin charge/discharge ratio RCT ICT1/ICT2 8 10 12 times S-S pin discharge current IS-S VS-S = 1V 0.4 0.5 0.6 A OUTN output H-level voltage VONH IO = 10mA VCC-0.85 VCC-1.00 V OUTN output L-level voltage VONL IO = 10mA 0.9 1.00 V OUTP output L-level voltage VOPL IO = 10mA 0.5 0.65 V VHN IN+, IN- differential voltage 10 20 mV 0.15 0.30 V Current limiting voltage Hall input sensitivity 5VREG I5VREG = 5mA C = 220PF 30 kHz μA (including offset and hysteresis) FG output L-level voltage FG pin leakage current VTH/RMI pin bias current VFGL IFG = 5mA IFGL VFG = 19V 20 A CPWM = VTH/RMI = 2V 0.1 A IVTH/IRMI Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions. www.onsemi.com 3 LB11867FV Package Dimensions unit : mm SSOP16 (225mil) CASE 565AM ISSUE A GENERIC MARKING DIAGRAM* SOLDERING FOOTPRINT* 5.80 1.0 (Unit: mm) 0.32 XXXXXXXXXX YMDDD XXXXX = Specific Device Code Y = Year M = Month DDD = Additional Traceability Data 0.65 NOTE: The measurements are not to guarantee but for reference only. *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. www.onsemi.com 4 LB11867FV Pd max -- Ta Allowable power dissipation, Pd max -- mW 1000 Mounted on a specified board: 114.3×76.1×1.6mm3, glass epoxy 800 600 400 352 200 0 -30 0 30 60 9095 Ambient temperature, Ta -- °C Pin Assignment OUT2P 1 16 OUT1P OUT2N 2 15 OUT1N VCC 3 14 SGND SENSE 4 13 5VREG RM 5 12 S-S VTH 6 11 CT CPWM 7 10 IN+ FG 8 9 INTop View www.onsemi.com 5 120 LB11867FV Block Diagram CT Discharge circuit Thermal shat down 0.47 to 1μF FG Discharge pulse VCC 5VREG OUT1N 5VREG OUT1P Controller HALL IN+ INOUT2N OUT2P Osillaton S-S RMI VTH CPWM SGND SENSE Truth table (1) Drive lock CPWM=H VTH, RMI, S-S=L IN- IN+ H L L H H L L H CT L H OUT1P OUT1N OUT2P OUT2N FG Mode L L OFF H L OUT1 2 drive OFF H L L OFF OUT2 1 drive OFF L OFF H L OFF H OFF L OFF Lock protection (2) Speed control CT, S-S=L VTH, RMI L H CPWM H L IN- IN+ OUT1P OUT1N OUT2P OUT2N Mode H L L L OFF H OUT1 2 drive OUT2 1 drive L H OFF H L L H L OFF L OFF H L H OFF H OFF L For VTH, RMI, and S-S pins, refer to the timing chart. www.onsemi.com 6 Regeneration mode LB11867FV Application Circuit Example (12V) 1μF to /25V *3 Rp=1kΩ 1 3 100Ω 2 4 RF 1μF to /25V RFG=10k to 100kΩ *2 VCC 5VREG FG SENSE H *4 *9 *8 1 IN- 2 IN+ *11 *6 3 S-S 4 RMI SGND *7 PWM-IN *1 VTH CPWM CP=220pF 30kHz *5 CT *10 CT=0.47μF *1. PowerGND wiring SGND is connected to the control circuit power supply system. *2. Power stabilization capacitor For the power stabilization capacitor on the signal side, use the capacitance of 1μF or more. Connect VCC and GND with a thick and shortest pattern. *3. Power stabilization capacitor on the power side For the power stabilization capacitor on the power side, use the capacitance of 1μF or more. Connect the power supply on the power side and GND with a thick and shortest pattern. *4. IN+, IN- pins Hall signal input pin. Wiring should be short to prevent carrying of noise. If noise is carried, insert the capacitor between IN+ and IN- pins. The Hall input circuit functions as a comparator with hysteresis (15mV). This also has a soft switch section with 30mV (input signal differential voltage). It is also recommended that the Hall input level is minimum 100mV(p-p). *5. CPWM pin Pin to connect the capacitor for generation of the PWM basic frequency The use of CP = 220pF causes oscillation at f = 30kHz, which is the basic frequency of PWM. As this is used also for the current limiting canceling signal, be sure to connect the capacitor even when the speed control is not made. www.onsemi.com 7 LB11867FV *6. RMI pin Minimum speed setting pin. Perform pull-up with 5VREG when this pin is not to be used. If the IC power supply is likely to be turned OFF first when the pin is used with external power supply, be sure to insert the current limiting resistor to prevent inflow of large current. (The same applies to the VTH pin.) *7. VTH pin Speed control pin. Connect this pin to GND when it is not used (at full speed). For the control method, refer to the timing chart. For control with pulse input, insert the current limiting resistor and use the pin with the frequency of 20k to 100kHz (20kHz to 50kHz recommended). *8. SENSE pin Current limiting detection pin. When the pin voltage exceeds 0.2V, the current is limited and the operation enters the lower regeneration mode. Connect this pin to GND when it is not to be used. *9. FG pin Rotation speed detection pin. This is an open collector output, which can detect the rotation speed from the FG output according to the phase changeover. Keep this pin open when it is not to be used. *10. CT pin Pin to connect the lock detection capacitor. The constant-current charge and discharge circuits incorporated cause locking when the pin voltage becomes 3.0V and unlocking when it is 1.1V. Connect the pin to GND when it is not to be used (locking not necessary). *11. S-S pin Pin to connect the soft-start setting capacitor. Connect the capacitor between 5VREG and S-S pin. This pin enables setting of the soft start time according to the capacity of the capacitor. See the timing char. Connect the pin to GND when it is not to be used. www.onsemi.com 8 LB11867FV Control timing chart (Speed control) f=30kHz (CP=220pF) VTH voltage 3.0V RMI voltage CPWM 1.1V 0V Minimum speed setting rotation (stop mode) Low speed High speed PWM control speed variable Full speed FG 100% ONDUTY 0% (1) Minimum speed setting (stop) mode The low-speed fan rotation occurs at the minimum speed set with the RMI pin. When the minimum speed is not set (RMI pin pulled up to 5VREG), the motor stops. (2) Low speedhigh speed PMW control is made by comparing the CPWM oscillation voltage (1.1V3.0V) and VTH voltage. Both upper and lower output TRs are turned ON when the VTH voltage is low. The upper output TR is turned OFF when the VTH voltage is high, regenerating the coil current in the lower TR. Therefore, as the VTH voltage decreases, the output ON-DUTY increases, causing increase in the coil current, raising the motor rotation speed. The rotation speed can be monitored with the FG output. (3) Full speed mode The full speed mode becomes effective when the VTH voltage is 1.1V or less. (Set VTH = GND when the speed control is not to be made.) www.onsemi.com 9 LB11867FV Control timing chart (Soft start) (1)At VTH < RMI voltage S-S voltage 3.0V RMI voltage CPWM VTH voltage 1.1V 0V Lock protection Soft start section VTH set speed 100% ONDUTY 0% T (2) At VTH > RMI voltage S-S voltage VTH voltage 3.0V RMI voltage CPWM 1.1V 0V Lock protection Soft start section RMI set speed 100% ONDUTY 0% T Adjust the S-S pin voltage gradient by means of the capacitance of the capacitor between the S-S pin and 5VREG.. Recommended capacitor: 0.1 to 1F www.onsemi.com 10 LB11867FV ORDERING INFORMATION Device Package Shipping (Qty / Packing) LB11867FV-MPB-E SSOP16 (225mil) (Pb-Free) 90 / Fan-Fold LB11867FV-MPB-H SSOP16 (225mil) (Pb-Free / Halogen Free) 90 / Fan-Fold LB11867FV-TLM-E SSOP16 (225mil) (Pb-Free) 2000 / Tape & Reel LB11867FV-TLM-H SSOP16 (225mil) (Pb-Free / Halogen Free) 2000 / Tape & Reel † For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. http://www.onsemi.com/pub_link/Collateral/BRD8011-D.PDF ON Semiconductor and the ON logo are registered trademarks of Semiconductor Components Industries, LLC (SCILLC) or its subsidiaries in the United States and/or other countries. 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. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. 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