LS7560

UL ® LSI/CSI LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747 SEQUENCE SELECT FAULT INDICATOR TACHOMETER OUT ERROR AMP (+) LS7560 LS7561 (631) 271-0400 FAX (631) 271-0405 July 2002 FIGURE 1. PIN CONNECTION DIAGRAM TOP VIEW 1 28 27 26 25 24 23 V DD (+V) F/R S3 S2 S1 BRAKE BRAKE SELECT PWM CONTROL TOP DRIVER POLARITY SELECT VR V SS (-V) OUT 1 OUT 2 OUT 3 HALL SENSORS A3800 BRUSHLESS DC MOTOR CONTROLLER FEATURES Open loop motor control Tachometer output for closed loop motor control Error Amplifier and PWM Speed Comparator with full accessibility High noise immunity Schmitt Triggers on Sensor inputs 5.5V Reference Supply for external sensors Cycle-by-cycle current sensing Static, or current limited dynamic, motor braking Output enable delay on speed direction reversal Enable input with fault sensing capability Fault Indicator output 60°/300° or 120°/240° electrical sensor spacing selection Selectable PWM of top and bottom drivers or bottom drivers only CMOS compatible motor outputs with drive capability Selectable top driver polarity Low power dissipation +10V to +18V operation (VDD-Vss) LS7560, LS7561 (DIP); LS7560-SD, LS7561-SD (Skinny DIP); LS7560-S, LS7561-S (SOIC); LS7560-TS, LS7561-TS (TSSOP) See Figure 1 GENERAL DESCRIPTION The LS7560/LS7561 are CMOS integrated circuits designed to control three or four phase brushless DC motors in a closed or open loop configuration. The IC consists of a decoder which provides pr...