LS7561N

LSI/CSI LS7560N LS7561N U® L LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747 (631) 271-0400 FAX (631) 271-0405 A3800 BRUSHLESS DC MOTOR CONTROLLER April 2012 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 Power Supply (VDD - VSS) LS7560N, LS7561N (DIP); LS7560N-S, LS7561N-S (SOIC); LS7560N-TS, LS7561N-TS (TSSOP) - See Figure 1 - Note: LS7560N/LS7561N are backward compatible with LS7560/LS7561 FIGURE 1. PIN CONNECTION DIAGRAM TOP VIEW LS7560N LSI SEQUENCE SELECT 1 ENABLE 2 FAULT INDICATOR 3 RC 4 TACHOMETER OUT 5 ERROR AMP (+) 6 28 V DD (+V) 27 F/R 26 S3 25 S2 24 S1 HALL SENSORS 23 BRAKE ERROR AMP (-) 7 ERROR AMP OUT 8 OSCILLATOR 9 CURRENT SENSE (+) 10 22 BRAKE SELECT 21 PWM CONTROL 20 TOP DRIVER POLARITY SELECT 19 V R CURRENT SENSE (-) 11 OUT 6 12 OUT 5 13 18 V SS (-V) 17 OUT 1 16 OUT ...