BA6849FS

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...