3-phase motor driver for CD-ROMs
Motor driver ICs
3-phase motor driver for CD-ROMs
BA6849FP / BA6849FP-Y / BA6849FM / BA6849FS
The BA6849 series are ICs...
Description
Motor driver ICs
3-phase motor driver for CD-ROMs
BA6849FP / BA6849FP-Y / BA6849FM / BA6849FS
The BA6849 series are ICs developed for CD-ROM spindle motor drives. These ICs possess a short brake and reverserotation brake for two types of brake functions, and also contain FG output and rotation direction detection (FR) circuits, making them high-functionality and high-performance ICs. FApplications CD-ROM, CD-R, CD-RW, DVD-ROM, and DVD-RAM FFeatures 1) Three-phase, full-wave, pseudo-linear drive system. 2) Built-in power save and thermal shutdown functions. 3) Built-in current limiter and Hall bias circuits. 4) Built-in FG output. FAbsolute maximum ratings (Ta = 25_C)
5) Built-in rotation direction detector. 6) Built-in reverse rotation prevention circuit. 7) Built-in short brake pin.
863
Motor driver ICs
BA6849FP / BA6849FP-Y / BA6849FM / BA6849FS
FRecommended operating conditions (Ta = 25_C)
FBlock diagram
864
Motor driver ICs
FPin descriptions BA6849FP / BA6849FM
BA6849FP / BA6849FP-Y / BA6849FM / BA6849FS
BA6849FP-Y
865
Motor driver ICs
MA6849FS
BA6849FP / BA6849FP-Y / BA6849FM / BA6849FS
866
Motor driver ICs
FInput / output circuits (1) Power save
BA6849FP / BA6849FP-Y / BA6849FM / BA6849FS
(2)
Torque command input
(3)
Torque output (A1, A2, and A3)
(4)
Hall input (H1), H1–, H2), H2–, H3), H3–)
867
Motor driver ICs
(5) Hall bias
BA6849FP / BA6849FP-Y / BA6849FM / BA6849FS
(7) FR Output
(6)
FG output
(8)
Short brake
Note: Resistance values ar...
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