LB11660FV-TLM-E

LB11660FV Monolithic Digital IC Half-pre Motor Driver Single-Phase Full-Wave, for Fan Motor www.onsemi.com Overview The LB11660FV is a single-phase bipolar drive half-predriver motor driver that can easily implement a direct PWM driver motor driver circuit with excellent efficiency. The LB11660FV is particularly well suited for the miniature fans used in servers. Features  Single-phase full-wave drive (15V, 1.5A transistors are built in) Half predriver with integrated high side transistor SSOP16 (225mil)  Built-in variable speed function controlled by an external input The LB11660FV can implement quiet, low-vibration variable speed control using externally clocked high side transistor direct PWM drive.  Minimum speed setting pin  Current limiter circuit (The limit value is determined by Rf; IO = 1A when RF = 0.5)  Built-in kickback absorption circuit  Soft switching circuit makes low current consumption, low loss, and low noise drive possible at phase switching  Built-in HB  Built-in lock protection and automatic recovery circuits (built-in on/off ratio switching circuit controlled by the supply voltage)  FG (speed detection) output  Built-in thermal protection circuit (design guarantee) ORDERING INFORMATION See detailed ordering and shipping information on page 10 of this data sheet. © Semiconductor Components Industries, LLC, 2015 August 2015 - Rev. 1 1 Publication Order Number : LB11660FV/D LB11660FV Specifications Absolute Maximum Ratings at Ta = 25C Parameter VCC maximum supply voltage VM maximum supply voltage OUT pin maximum output Symbol Conditions Ratings Unit VCC max 20 V VM max 20 V IOUT max Rf  0.39 1.5 current OUT pin output voltage 1 VOUT max 1 OUT pin output voltage 2 VOUT max 2 PRE pin maximum source IPSO max T  0.4s A 20 V 26.5 V 30 mA current PRE pin maximum sink current IPSI max 7 mA PRE pin output voltage VP max 20 V HB maximum output current HB max 10 mA VTH input pin voltage VTH max 7 V FG output pin voltage VFG max 18 V FG output current IFG max 10 mA Allowable power dissipation Pd max 0.8 W Operating temperature Topr Storage temperature Tstg When mounted on a circuit board *1 *2 30 to +90 C 55 to +150 C *1 Specified circuit board : 114.3  76.1  1.6mm3, glass epoxy. *2: Tj max is 150°C. This device must be used under conditions such that the chip temperature does not exceed Tj = 150°C during operation. Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. Recommended Operating Conditions at Ta = 25C Parameter VCC supply voltage Symbol Conditions Ratings Unit VCC 4 to 15 V VM 3 to 15 V Current limiter operation range ILIM 0.6 to 1.2 V VTH input level voltage range VTH 0 to 6 V Hall sensor input common-mode VICM 0.2 to 3 V VM supply voltage input 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 LB11660FV Electrical Characteristics Unless otherwise specified Ta  25C, VCC = 12V Ratings Parameter Symbol Conditions Unit min typ max Circuit current ICC1 Drive mode 9 12 HB voltage VHB IHB = 5mA 1.05 1.25 1.40 V 6VREG = 5mA 5.80 6 6.20 V 6VREG voltage V6VREG mA CT pin high-level voltage VCTH 3.4 3.6 3.8 V CT pin low-level voltage VCTL 1.4 1.6 1.8 V ICT pin charge current 1 ICTC1 VCC = 12V 1.7 2.2 2.7 A ICT pin charge current 2 ICTC2 VCC = 6V 1.3 1.8 2.3 A ICT pin discharge current 1 ICTD1 VCC = 12V 0.11 0.15 0.19 A ICT pin discharge current 2 ICTD2 VCC = 6V 0.34 0.44 0.54 ICT charge/discharge current RCT1 VCC = 12V 12 15 18 Times RCT2 VCC = 6V 3 4 5 Times VRCT 6 6.6 7.3 V IBVTH 2 1 0 A A ratio 1 ICT charge/discharge current ratio 2 ICT charge/discharge ratio threshold voltage VTH bias current OUT output high saturation VOH IO = 200mA, RL = 1 0.6 0.8 V VPL IO = 5mA 0.2 0.4 V VPH IO = 20mA 0.9 1.2 V VRf VCC  VM voltage PRE output low saturation voltage PRE output high saturation voltage Current limiter 450 500 550 mV VPWMH 2.2 2.5 2.8 V VPWML 0.4 0.5 0.7 V PWM external C charge current IPWM1 23 18 14 A PWM external C discharge IPWM2 18 24 30 A 19 23 27 kHz 15 25 mV 0.2 0.3 V 30 A 210 C PWM output pin high-level voltage PWM output pin low-level voltage current PWM oscillator frequency Hall sensor input sensitivity FPWM VHN C = 200pF Zero peak value (including offset and hysteresis) FG output pin low-level voltage VFG/RD IFG/RD = 5mA FG output pin leakage current IFGL/IRDL VFG/RD = 7V Thermal protection circuit THD Design target value*3 150 180 *3: This is a design guarantee and is not tested in individual units. The thermal protection circuit is included to prevent any thermal damage to the IC. Since this would imply operation outside the IC's guaranteed temperature range, the application thermal design must be such that the thermal protection circuit will not operate if the fan is operating constantly. 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 LB11660FV Package Dimensions unit : mm SSOP16 (225mil) CASE 565AM ISSUE A to 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 *This information is generic. Please refer to device data sheet for actual part marking. LB11660FV Pin Assignment VM 1 16 OUT1 OUT2 2 15 PRE1 PRE2 3 14 GND 13 6VREG VTH 5 12 CT RMI 6 11 IN- CPWM 7 10 HB FG 8 9 IN+ VCC 4 LB11660FV Top view Truth Table IN- IN+ High Low Low High High Low Low High High Low Low High VTH Low CPWM CT High Low High Low - - High OUT1 OUT2 PRE1 PRE2 FG High Off Low High Low Off High High Low Off Off Off Low High Low During rotation  Off Off High Low Off regeneration Off Off Low High Low Off Off High Low Off CPWM – High is the state where CPWM > VTH, and CPWM– Low is the state where CPWM < VTH. www.onsemi.com 5 Mode During rotation  drive Lock protection LB11660FV Application Circuit Example 1 Rf *4 *2 VCC CM = 4.7F or more VM HB H IN*5 *7 IN+ FG 6VREG R3 OUT2 *9 RMI OUT1 R4 *3 Control valtage PRE1 VTH PRE2 CPWM CP = 200pF *f = 23kHz CP = 100pF *f = 46kHz *6 *1 CT CT = 0.47 to 1F GND *1. Power supply and ground lines The IC ground is the control current power supply system ground, and the external n-channel transistor ground is the motor power supply system ground. These two systems should be formed from separate lines and the control system external components should be connected to the IC ground. *2. Regeneration power supply stabilization capacitor Use a 4.7µF/25V capacitor at least for CM, which is the power supply stabilization capacitor for both PWM drive and kickback absorption. The capacitor CM must be connected to prevent destruction of the IC when power is applied or removed. *3. Speed Control (1) Control voltage The PWM duty is determined by comparing the VTH pin voltage with the PWM oscillator waveform. When the VTH voltage falls, the on duty increases and when the VTH voltage falls below the PWM output low level, the duty will go to 100%. (2) Thermistor For thermistor applications, normally the 6VREG level will be resistor divided and the divided level input to the VTH pin. The PWM duty is changed by changes in the VTH pin voltage due to changes in temperature. *4. Current limiter setting The current limiter circuit operates if the voltage across the resistor between VCC and the VM pin exceeds 0.5V. Since the current limiter circuit applies limitation at a current determined by IO = VRf/Rf (where VRf = 0.5V (typical), Rf: resistance of the current detection resistor), the current limiter will operate at IO = 1A when Rf = 0.5. The resistor RF must be connected in the circuit and it must have a value such that the circuit operates within the recommended current limiter operating range. www.onsemi.com 6 LB11660FV *5. Hall sensor input Lines that are as short as possible must be used to prevent noise from entering the system. The Hall sensor input circuit consists of a comparator with hysteresis (20mV). We recommend that the Hall sensor input level be at least three times this hysteresis, i.e. at least 60mVp-p. *6. PWM oscillator frequency setting capacitor The PWM oscillator oscillates at f = 23kHz when CP is 200pF and at f = 46kHz when CP is 100pF, and this frequency becomes the PWM reference frequency. Note that the PWM frequency is given approximately by the following equation. f [kHz]  (4.6×106) ÷C [pF] *7. FG output This is an open collector output, and a rotation count detection function can be implemented using this FG output, which corresponds to the phase switching. This pin must be left open if unused. *8. HB pin This pin provides a Hall effect sensor bias constant-voltage output of 1.25V. *9. RMI pin This pin is the speed control minimum speed setting. The minimum output duty is set by R3 and R4. Leave R4 open to have the motor stop when the duty is 0%. Rotation Control Timing Chart Duty 100% PWM duty(%) Minimum output duty Duty 0% RMI VPWML VPWMH VTH(V) Minimum speed setting rotation PWM control variable speed mode Full speed mode VTH voltage 2.5V RMI voltage CPWM 0.5V 0V ON On duty OFF www.onsemi.com 7 LB11660FV Application Circuit Example 2 Mounting circuit board (Component values are provided for reference purposes) D1 R1 C1 VCC R5 VM HB IN- H IN+ FG 6VREG C2 R3 OUT2 RMI OUT1 R4 Q1 R2 Control voltage PRE1 VTH Q2 C3 PRE2 (C6) CPWM C4 CT C5 GND Parts List D1 : SBM30-03-Tr (Our product) Q1, 2 : CPH3418 (Our product) R1 : 0.51 size 3225 R2 : 15k size 1608 R3 : 39k size 1608 R4 : 20k size 1608 R5 : 2.2 size 1608 C1 : 4.7F/25V size 3216 C2 : 2.2F size 1608 C3 : 2.2F size 1608 C4 : 220pF size 1005 C5 : 0.47F size 1608 C6, 7 : No connection www.onsemi.com 8 (C7) LB11660FV Application Circuit Example 3 No minimum speed setting, thermistor input used RL VCC CM = 4.7F or more *8 H VM HB IN- *5 IN+ FG 6VREG R3 OUT2 RMI OUT1 RTU PRE1 VTH TH CP = 200pF *f = 23kHz CP = 100pF *f = 43kHz PRE2 CPWM CT CT = 0.47 to 1F GND www.onsemi.com 9 LB11660FV Internal Equivalent Circuit Diagram FG Thermal protection circuit VCC VM Constant voltage Delay circuit 6VREG OUT2 HB HALL Control circuit 1.25V OUT1 M IN+ Delay circuit Predriver Predriver INAmplifier with hysteresis Charge/discharge circuit GND CT RMI PRE1 PRE2 Oscillator circuit CPWM VTH ORDERING INFORMATION Device LB11660FV-MPB-H Package SSOP16 (225mil) (Pb-Free / Halogen Free) Wire Bond Shipping (Qty / Packing) Au-Wire 90 / Fan-Fold LB11660FV-TLM-H SSOP16 (225mil) (Pb-Free / Halogen Free) Au-Wire 2000 / Tape & Reel LB11660FV-W-AH SSOP16 (225mil) (Pb-Free / Halogen Free) Cu-Wire 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. 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