LB1667 drivers equivalent, two-phase unipolar drive brushless motor drivers.
* Output protection Zener diodes with variable breakdown voltages — When the Z1 and Z2 pins are open: VOLM = 57 V — When the Z1 and Z2 pins are shorted: VOLM = 32 V —.
which require large output currents and involve large amounts of heat generated in the IC by dissipating the motor coil .
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