(PDF) BA6477FS Datasheet - FDD spindle motor driver

Número de pieza	BA6477FS
Descripción	FDD spindle motor driver
Fabricantes	ROHM Semiconductor
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No Preview Available ! Motor driver ICs FDD spindle motor driver BA6477FS The BA6477FS 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, and a power save circuit. The com- pactly 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. 4) Hall power supply switch. 5) Motor speed changeable. 6) Index amplifier. FAbsolute maximum ratings (Ta = 25_C) FRecommended operating conditions (Ta = 25_C) 532 1 page Motor driver ICs (5) Motor output (11X15 pin) (6) Hall bias (16 pin) BA6477FS (7) Hall input (17X22 pin) (8) Integrating amplifier (28, 29 pin) (9) Speed discriminator output (30 pin) (10) Start / stop (31 pin) (11) Index output (32 pin) 536 5 Page Motor driver ICs FApplication example BA6477FS 542 11 Page

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PDF BA6477FS Data sheet ( Hoja de datos )