BA6871BS

Motor driver ICs 3-phase motor driver BA6871BS The BA6871BS is a 3-phase, full-wave, pseudo-linear motor driver suited for VCR capstan motors. The IC has a torque ripple cancellation circuit to reduce wow and flutter, and an output transistor saturation prevention circuit that provides superb motor control over a wide range of current. The built-in motor power series regulator allows applications with low power consumption. FApplications 3-phase VCR capstan motors FFeatures 1) 3-phase, full-wave, pseudo-linear driver system. 2) High performance torque ripple cancellation circuit. 3) Reversal braking by detecting the motor direction. 4) Saturation prevention circuit for high- and low-side output transistors. FAbsolute maximum ratings (Ta = 25_C) 5) Motor power supply series regulators. 6) Built-in circuit for output-to-GND short-circuit detection. 7) Two FG amplifiers. 8) Available in a SDIP 32-pin power shrink package. FRecommended operating conditions (Ta = 25_C) 673 Motor driver ICs FBlock diagram BA6871BS 674 Motor driver ICs FPin descriptions BA6871BS 675 Motor driver ICs FInput / output circuits (1) Driver output BA6871BS (2) Hall input (3) ED / S (4) Torque control input (5) Torque limit and current sensing 676 Motor driver ICs BA6871BS (6) Series regulator (7) Amplifier I / O 677 Motor driver ICs BA6871BS FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC1 = 5V, VM = VCC2 = 12V, AMP*VCC = 12V) 678 Motor driver ICs FCirc...