View ba6832fs datasheet:

Motor driver ICs Voice coil motor driver BA6832FS The BA6832FS is a voice coil motor driver used for moving the heads of hard disc and mass-storage floppy disc drives. FApplications HDD disc and mass-storage FDD FFeatures 1) Output current is controlled by the Vctl-Vref voltage. 3) Chip enabling pin. 2) Retraction control pin. 4) Internal thermal shutdown circuit. FAbsolute maximum ratings (Ta = 25_C) FRecommended operating conditions 509 Motor driver ICs BA6832FS FBlock diagram 510 Motor driver ICs BA6832FS FPin descriptions FInput / output circuits 511 Motor driver ICs BA6832FS FElectrical characteristics (unless otherwise noted, Ta = 25_C and VCC = 12V) 512 Motor driver ICs BA6832FS FCircuit operation (1) Output current control The method of output current c