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File name LB1881M.pdf

Ordering number : EN4455B Monolithic Digital IC LB1881M Three-Phase Brushless Motor Driver IC Overview 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. Package Dimensions 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 Symbol VCC1 max Supply voltage VCC2 max VS max Output applied voltage Input applied voltage Output current Allowable power dissipation Operating temperature Storage temperature VO max VI max IO max Pd max Topr Tstg All input pins Conditions Ratings 7 12 VCC2 VS + 2 VCC1 1.0 1.0 ­20 to +75 ­55 to +150 Unit V V V V V A W °C °C Allowable Operating Ranges at Ta = 25°C Parameter Symbol VCC1 Supply voltage VCC2 VS Conditions VCC1 VCC2 Ratings 4.0 to 6.0 4 to 10 Up to VCC2 Unit V V 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 Symbol ICC1 Supply current ICC2 IS Output quiescent current Output saturation voltage Output TRS withstand voltage Output quiescent voltage Hall amplifier input offset voltage Hall amplifier common mode input voltage range Hall I/O voltage gain Brake pin high level voltage Brake pin low level voltage Brake pin input current Brake pin leakage current FRC pin high level voltage FRC pin low level voltage FRC pin input current FRC pin leakage current Upper side residual voltage Lower side residual voltage Residual voltage inflection point Overlap level Overlap vertical difference Standby on voltage Standby off voltage Standby pin bias current Thermal protection circuit operating temperature Thermal protection circuit hysteresis FG amplifier input offset voltage Open loop voltage gain Source output saturation voltage Sink output saturation voltage Common mode signal exclusion ratio FG amplifier common mode input voltage range Phase margin Schmitt amplifier threshold voltage Schmitt amplifier hysteresis width ICCOQ ISOQ VO(sat) VO(sus) VOQ VHOFFSET VHCOM GVHO VBRH VBRL IBRIN IBRLEAK VFRCH VFRCL IFRCIN IFRCLEAK VXH VXL VSVX OL OL VSTBYL VSTBYH ISTBYIN TTSD TTSD VFG OFFSET GVFG VFG OU VFG OD GHR VFG CH M VFGS SH VFGS HIS *1 VFGIN+ = 2.5 V, when VFGOUT2 goes from high to low VFGIN+ = 2.5 V 2.45 20 f = 10 kHz IO = ­2 mA IO = 2 mA *1 0 20 2.50 40 2.55 60 80 3.5 3.7 1.3 *1 *1 ­8 43 150 180 15 +8 IOUT = 100 mA, VCC2 = 6 V, VS = 2 V I