LSI Computer Systems LS7561N
The LS7560N/LS7561N are 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 proper commutation sequencing, a frequency-to-pulse width converter and error amplifier for closed loop motor speed control, a PWM comparator and sawtooth oscillator for external driver power control and a 6V reference generator for supplying power to motor sensors. The overcurrent sense condition will disable all output drivers when using the LS7560N and only the bottom drivers when using the LS7561N.| Part No. | LS7561N |
|---|---|
| Datasheet | LS7561N Download |
| Manufacturer |  LSI Computer Systems |
| Description | BRUSHLESS DC MOTOR CONTROLLER |
| Buy | Stock & Price |
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 INDICATO...
