Ordering number : EN4455B Monolithic Digital IC LB1881M Three-Phase Brushless Motor Driver IC Overview Package Dimensions The LB1881M is a three-phase brushless motor driver IC designed for use as a camcorder capstan or drum motor driver, or as a digital audio tape player/recorder motor driver. unit: mm 3073A-MFP30S [LB1881M] Features • 120° voltage linear system • Appropriate for portable applications, since the LB1881M reduces system power requirements by using motor voltage control for speed control. • Built-in torque ripple compensation circuit • Small external capacitances due to the adoption of a soft switching technique (chip capacitor). • Built-in thermal shutdown circuit • Built-in FG amplifier SANYO: MFP30S Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Supply voltage Symbol Conditions Ratings Unit VCC1 max 7 VCC2 max 12 V VCC2 V VS max Output applied voltage VO max Input applied voltage VI max All input pins V VS + 2 V VCC1 V Output current IO max 1.0 A Allowable power dissipation Pd max 1.0 W Operating temperature Topr –20 to +75 °C Storage temperature Tstg –55 to +150 °C Ratings Unit Allowable Operating Ranges at Ta = 25°C Parameter Symbol VCC1 Supply voltage VCC2 VS Conditions VCC1 ≤ VCC2 4.0 to 6.0 V 4 to 10 V Up to VCC2 V SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN O3097HA (OT)/30395TH (OT) No. 4455-1/6 LB1881M Electrical Characteristics at Ta = 25°C, VCC1 = 5 V, VCC2 = 7 V, VS = 3 V Ratings Parameter Supply current Symbol max Unit VBR = 5 V 3.0 5.0 mA VBR = 5 V 6.5 10.0 mA VBR = 5 V, RL = ∞ 5.0 mA VSTBY = 0 V 100 µA VSTBY = 0 V, RL = ∞ 150 µA 1.7 V ICCOQ ISOQ VO(sat) IOUT = 0.6 A, sink + source Output TRS withstand voltage VO(sus) IOUT = 20 mA*1 Hall amplifier input offset voltage typ ICC1 Output saturation voltage Output quiescent voltage min ICC2 IS Output quiescent current Conditions VOQ VHOFFSET Hall amplifier common mode input voltage range VHCOM VBR = 5 V *1 Rangle = 8.2 kΩ 12 1.45 V 1.55 1.65 V –5 +5 mV 1.4 2.8 V 40.0 dB 34.0 37.0 Hall I/O voltage gain GVHO Brake pin high level voltage VBRH Brake pin low level voltage VBRL 0.8 V Brake pin input current IBRIN 120 µA –30 µA 2.0 V Brake pin leakage current IBRLEAK FRC pin high level voltage VFRCH FRC pin low level voltage VFRCL 1.2 V FRC pin input current IFRCIN 100 µA FRC pin leakage current 2.8 V IFRCLEAK –30 µA Upper side residual voltage VXH IOUT = 100 mA, VCC2 = 6 V, VS = 2 V 0.285 0.455 V Lower side residual voltage VXL IOUT = 100 mA, VCC2 = 6 V, VS = 2 V 0.350 0.440 V 80 % +10 % Residual voltage inflection point Overlap level Overlap vertical difference VS∆VX IOUT = 100 mA, VCC2 = 6 V*1 OL VCC2 = 6 V, VS = 3 V, RL = 100 Ω (Y) ∆OL Standby on voltage VSTBYL Standby off voltage VSTBYH Standby pin bias current ISTBYIN 70 VCC2 = 6 V, VS = 3 V, RL = 100 Ω (Y) –10 0 *2 –0.2 +0.8 V 2 5 V 100 µA 210 °C +8 mV TTSD *1 Thermal protection circuit hysteresis ∆TTSD *1 Open loop voltage gain 150 VFG OFFSET –8 GVFG f = 10 kHz VFG OU IO = –2 mA Sink output saturation voltage VFG OD IO = 2 mA FG amplifier common mode input voltage range Phase margin Schmitt amplifier threshold voltage Schmitt amplifier hysteresis width GHR °C 43 dB 3.7 V 1.3 80 *1 VFG CH φM 180 15 Source output saturation voltage Common mode signal exclusion ratio V 60 Thermal protection circuit operating temperature FG amplifier input offset voltage 0.9 0 3.5 20 *1 VFGS SH VFGIN+ = 2.5 V, when VFGOUT2 goes from high to low VFGS HIS VFGIN+ = 2.5 V V dB V deg 2.45 2.50 2.55 20 40 60 V mV Note: 1. These are target settings, and are not measured. The overlap ratings are taken as test ratings without change. 2. When the standby pin is open the IC will be in the standby state. No. 4455-2/6 LB1881M Pin Assignment Top view Allowable power dissipation, Pd max – W Block Diagram No. 4455-3/6 LB1881M Pin Functions Pin No. Symbol 4 VS 5 Unit (resistance: Ω) Pin voltage Equivalent circuit Pin function ≤ VCC2 Power supply input that determines the output amplitude. It must be set to a voltage equal or lower than VCC2. VCC2 4 to 10 V Power supply for power amplifier systems other than motor drive transistors. Power supply pin that provides voltage for blocks other than control blocks supplied by VCC1. 6 VCC1 4 to 6 V Power supply that provides voltage for the Hall amplifier, the forward/reverse circuit, the FG amplifier, and the thermal shutdown circuit. 7 ST. BY (H): 2.0 V max (L): 0.8 V min All circuits can be made inoperative either by connecting this pin to GND, or by leaving it open. In that state the supply current will be approximately 0 µA. Hold at 2 V or higher during normal operation. (When VCC1 is 5 V) 8 ANGLE 10 11 FGIN– FGIN+ Connect a resistor between this pin and GND. Changing the value of this resistor will change the Hall input-output gain (motor waveform slope). 0 V min 3.5 V max FG signal input pin (When VCC1 is 5 V) 12 FGOUT1 FG amplifier output pin Continued on next page No. 4455-4/6 LB1881M Unit (resistance: Ω) Continued from preceding page. Pin No. Symbol 13 FGOUT2 18 FRC Pin voltage Equivalent circuit Pin function FG Schmitt amplifier output pin (H): 2.8 V min (L): 1.2 V max Pin for setting the motor to forward or reverse rotation (When VCC1 is 5 V) Low level: Forward rotation (under 1.2 V: when VCC1 is 5 V) High level: Reverse rotation (over 2.8 V: when VCC1 is 5 V) 19 BR (H): 2.0 V min (L): 0.8 V max Motor brake pin Low level: Motor drive (under 0.8 V) High level: Motor brake (over 2.0 V) 20 21 22 23 24 25 WIN2 WIN1 VIN2 VIN1 UIN2 UIN1 1.4 V min 2.8 V max (When VCC1 is 5 V) W phase Hall element input pins. Logic high is defined to be states where WIN1 > WIN2. V phase Hall element input pins. Logic high is defined to be states where VIN1 > VIN2. U phase Hall element input pins. Logic high is defined to be states where UIN1 > UIN2. 26 Rf 27 28 3 UOUT VOUT WOUT 1, 2, 14, 15, 16, 17, 29, 30 FRAME (GND) Output transistor GND Output pin GND for all circuits other than output transistors. No. 4455-5/6 LB1881M Sample Application Circuit Units (resistance: Ω, capacitance: F) Logic Value Table Input Source Sink 1 2 3 4 5 6 W phase → V phase V phase → W phase W phase → U phase U phase → W phase V phase → W phase W phase → V phase U phase → V phase V phase → U phase V phase → U phase U phase → V phase U phase → W phase W phase → U phase U V W H H L H L L L L H L H L H L H L H H Forward and reverse control F/RC L H L H L H L H L H L H Inputs: High: For each phase, the input 1 potential is at least 0.2 V higher than the input 2 potential. Low: For each phase, the input 1 potential is at least 0.2 V lower than the input 2 potential. Forward/reverse control: High: 2.8 V to VCC1 Low: 0 to 1.2 V ■ No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. ■ Anyone purchasing any products described or contained herein for an above-mentioned use shall: ➀ Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: ➁ Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. ■ Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of November, 1997. Specifications and information herein are subject to change without notice. No. 4455-6/6