LB1689D

The LB1689D is a 3-phase brushless motor driver IC ideally suited for use in VTR capstan motor, drum motor drive applications.

The features of LB1689D can be summarized as (1)120° voltage linear type; (2)soft switching type eliminating noises caused by current switching and making the values of external capacitors smaller (comparable to those of chip capacitors); (3)on-chip FG amplifier; (4)on-chip thermaL shutdown circuit; (5)The FG signal can be used to detect the rotational speed of a motor so that the hall amp gain is changed in two steps, thus reducing torque ripple and noise.

The absolute maximum ratings and allowable operating conditions of LB1689D are (1)maximum supply voltage VCC max1: 20V, max2: 7.0V; (2)output supply voltage VOUT.v.w.: 22V; (3)output current IOUT: 1.5 A; (4)allowable power dissipation Pd max: 2.1W; (5)operating temperature Topr: - 20 to + 75°C; (6)storage temperature Tstg - 55 to + 125°C; (7)supply voltage VCC1: 8.5 to 18V, VCC2: 4.3 to 6.5V.