Motor driver ICs
3-phase motor driver
BA6871BS
The BA6871BS is a 3-phase, full-wave, pseudo-linear motor driver suited ...
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)
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Motor driver ICs
FBlock diagram
BA6871BS
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Motor driver ICs
FPin descriptions
BA6871BS
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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
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Motor driver ICs
BA6871BS
(6)
Series
regulator
(7)
Amplifier I / O
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Motor driver ICs
BA6871BS
FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC1 = 5V, VM = VCC2 = 12V, AMP*VCC = 12V)
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Motor driver ICs
FCirc...