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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.

5) Motor power supply series regulators.

6) Built-in circuit for output-to-GND short-circuit detec-

tion.

7) Two FG amplifiers.

8) Available in a SDIP 32-pin power shrink package.

FAbsolute maximum ratings (Ta = 25_C)

FRecommended operating conditions (Ta = 25_C)