BA6492BFS

Motor driver ICs FDD spindle motor driver BA6492BFS The BA6492BFS is a one-chip IC designed for driving FDD spindle motors. This high-performance IC employs a 3-phase, full-wave soft switching drive system, and contains a digital servo, an index amplifier, two monostable multivibrator elements, and a power save circuit. The compactly packaged IC reduces the number of external components required. FApplications Floppy disk drivers FFeatures 1) 3-phase, full-wave soft switching drive system. 2) Digital servo circuit. 3) Power save circuit. FAbsolute maximum ratings (Ta = 25_C) 4) Hall power supply switch. 5) Motor speed changeable. 6) Index amplifier. Built-in 2 monostable multivibrator. FRecommended operating conditions (Ta = 25_C) 555 Motor driver ICs FBlock diagram BA6492BFS 556 Motor driver ICs FPin descriptions BA6492BFS 557 Motor driver ICs FInput / output circuits (1) Monostable multivibrator element timing setting (3, 4 pin) BA6492BFS (2) Constant voltage output (5 pin) (3) Speed discriminator output (6 pin) (4) Integrating amplifier (7, 8 pin) (5) Motor output (11X15 pin) (6) Hall bias (16 pin) 558 Motor driver ICs Hall input (17X22 pin) BA6492BFS (7) (8) Index input (23, 24 pin) (9) FG amplifier (25X27 pin) (10) Speed control (29 pin) (11) External clock input (30 pin) (12) Start / stop (31 pin) (13) Timing output (32 pin) 559 Motor driver ICs FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 5V) BA6492BFS 560 ...