LB1863M, LB1869M Monolithic Digital IC Two-Phase Brushless Motor Driver www.onsemi.com Overview The LB1863M and LB1869M are 2-phase unipolar brushless motor drivers that are provided in a miniature flat package that contributes to end product miniaturization and supports automatic mounting. These products support the implementation of motor drive lock protection and automatic recovery circuits, and alarm specifications with a minimal number of external components. SOIC14 W / MFP14S (225 mil) Features and Functions Hall elements can be connected directly to the IC itself. 1.5-A output current output transistors built in Rotation detection function that provides a low-level output during motor drive and a high-level output when the motor is stopped Motor lock protection and automatic recovery functions built in Thermal shutdown circuit Switching noise can be reduced with an external ceramic capacitor. Classification Package System Voltage MFP-14S 12V LB1869M 24V LB1863M Note: The LB1869M and LB1863M are pin compatible so that the same printed circuit board can be used for both 12 V and 24 V products. ORDERING INFORMATION See detailed ordering and shipping information on page 7 of this data sheet. © Semiconductor Components Industries, LLC, 2014 August 2014 - Rev. 0 1 Publication Order Number : LB1863M_69M/D LB1863M, 1869M Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum input current Symbol ICC max Conditions Ratings Unit t ≤ 20 ms 200 LB1863M –0.3 to +85 V LB1869M –0.3 to +60 V mA Output voltage VOUT Output current IOUT 1.5 A RD influx current IRD 10 mA RD voltage VRD Allowable power dissipation Pd max When mounted (on a 20 × 15 × 1.5-mm3 glass-epoxy printed circuit board) 30 V 800 mW Operating temperature Topr –30 to +80 °C Storage temperature Tstg –55 to +150 °C Ratings Unit Allowable Operating Ranges at Ta = 25°C Parameter Input current range Common-mode input voltage range Symbol Conditions ICC 6.0 to 50 VICM mA 0 to VIN –1.5 V Electrical Characteristics at Ta = 25°C, ICC = 10 mA Parameter Output voltage 1 Output voltage 2 Output saturation voltage Input voltage Amplifier input offset voltage Amplifier input bias current RD output saturation voltage Capacitor discharge current Comparator input threshold voltage Symbol VOR VO(SUS) Conditions Ratings min typ Unit max LB1863M 80 LB1869M 60 V V LB1863M : IO = 0.1 A 65 V LB1869M : IO = 0.1 A 40 V VO(sat)1 IO = 0.5 A 0.95 1.2 V VO(sat)2 IO = 1.0 A 1.15 1.5 V 6.4 6.7 7.0 V –7 0 +7.0 mA 0.1 0.3 V 3 3.9 μA VIN ICC = 7.0 mA VOFF IBA VRD(sat) IC1 –250 IRD = 5 mA 2.1 nA IC2 0.31 0.44 0.59 μA VTH1 0.77 0.8VIN 0.83 V VTH2 0.42 0.45VIN 0.48 V Pin Assignment No. 4943-2/6 LB1863M, 1869M Equivalent Circuit, Block Diagram, and Sample Application Sample Application Circuit No. 4943-3/6 LB1863M, 1869M Sample Application Circuit Output Waveforms Truth Table IN+ IN– C OUT1 OUT2 RD H L L H L L L H L L H L H L H H H H L H H H H H Design Documentation (See the application circuit diagram.) 1. Power-supply voltage (VIN pin) Since these miniature flat package products supply power to the Hall amplifier block and the control block from an internal parallel regulator, they operate with good stability with respect to kickback currents from the motor and variations in the power-supply voltage. They also provide an adequate ability to withstand surges. The resistor R1 between the VCC and VIN pins should be set up so that a current in the range ICC = 6 to 50 mA flows into the VIN pin in the fan motor power-supply voltage range. VIN has a typical value of 6.7 volts when ICC is 7 mA. The current flowing into VIN can be calculated with the following formula. VCC – VIN ICC = ————— ......................(1) R1 • Abnormal voltage considerations The maximum allowable current for the VIN pin is 200 mA. Therefore, the IC design allows it to withstand voltages up to the plus side abnormal voltage Vsurge give by formula (2). Vsurge = VIN + R1 × 200 mA......(2) 2. Hall input pin voltages (IN– and IN+ pins) The Hall element output voltages to the Hall element input pins must be in the range 0 to (VIN –1.5 V). The gain from the Hall input pins to the output pin is over 100 dB. The Hall input amplifier offset voltage is ±7 mV. This means that the Hall element output must be set up taking this ±7 mV offset into account. 3. Output transistors (OUT1 and OUT2 pins) Output current: IO = 1.5 A maximum Output saturation voltage: VOsat = 1.15V/1.0 A (typical) Applications should adopt one of the following three output protection techniques. ➀ If a capacitor is inserted between OUT and ground, use a capacitor with a value up to C = 10 μF, and design that value so that the kickback and reverse voltages do not exceed VOR. ➁ If a Zener diode is added, determine a value for the Zener voltage that is lower than VO(SUS). If radio-frequency noise is a problem, insert a capacitor between B1 and B2. ➂ If a capacitor is inserted between OUT and B1, set the capacitor value so that the kickback voltage is lower than VO(SUS). If oscillation occurs, insert a resistor in series with the capacitor. No. 4943-4/6 LB1863M/LB1869M 4. Output protection function (C pin) This pin connects the capacitor that forms the automatic recovery circuit. If rotation stops due to, for example, a motor overload, the pin voltage rises and the output stops. The system automatically recovers from stopped to drive mode when the load is set to an appropriate level. The lock detection time can be set by changing the value of the capacitor. For a 1-μF capacitor:Lock detection time About 2 seconds Lock protection time (output on) About 1 second (output off) About 6 seconds Automatic recovery circuit pin C voltage ➀While the blades are turning, the capacitor is charged with a current of about 3 μA (typical), and C is discharged by pulses that correspond to the motor speed. ➁When the blades lock, the capacitor is no longer discharged, and the voltage across the capacitor increases. The output is turned off when that voltage reaches 0.8 × VIN. ➂When the output is turned off, the capacitor is discharged at a current of about 0.44 μA (typical). When the capacitor voltage falls under VTH2, if the lock state is not yet cleared the capacitor continues discharging until VTH1. (Note that the output is turned on at this time.) These operations, i.e. items ➁ and ➂, are repeated with a ton:toff ratio of about 1:6 to protect the motor. ④If the lock state has been cleared when the capacitor voltage reaches VTH2, motor rotation is started by turning the output on. 5. Rotation detection signal (RD pin) This is an open collector output, and outputs a low level in drive mode and a high level when the motor is stopped. 6. Radio-frequency noise reduction function (B1 and B2 pins) These are base pins for Darlington pair outputs. Add capacitors of about 0.01 to 0.1 μF if radio-frequency noise is a problem. 7. Thermal shutdown function Turns off the output in response to coil shorting or IC overheating. No. 4943-5/6 LB1863M, LB1869M Package Dimensions unit : mm SOIC14 W / MFP14S (225 mil) CASE 751CB ISSUE A to (Unit: mm) 1.10 SOLDERING FOOTPRINT* GENERIC MARKING DIAGRAM* 5.70 XXXXXXXXXX YMDDD 1.00 XXXXX = Specific Device Code Y = Year M = Month DDD = Additional Traceability Data 0.47 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 6 *This information is generic. Please refer to device data sheet for actual part marking. LB1863M, LB1869M ORDERING INFORMATION Device Package Shipping (Qty / Packing) LB1863M-MPB-E SOIC14 W / MFP14S (225 mil) (Pb-Free) 60 / Fan-Fold LB1863M-MPB-H SOIC14 W / MFP14S (225 mil) (Pb-Free / Halogen Free) 60 / Fan-Fold LB1863M-TLM-E SOIC14 W / MFP14S (225 mil) (Pb-Free) 1000 / Tape & Reel LB1863M-TLM-H SOIC14 W / MFP14S (225 mil) (Pb-Free / Halogen Free) 1000 / Tape & Reel LB1869M * Discontinued SOIC14 W / MFP14S (225 mil) (Pb-Free) -/- † 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. 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