BA6849FP Rohm, BA6849FP Datasheet
BA6849FP
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BA6849FP Summary of contents
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... 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 reverse- rotation 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 ...
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... Motor driver ICs FRecommended operating conditions (Ta = 25_C) FBlock diagram 864 BA6849FP / BA6849FP-Y / BA6849FM / BA6849FS ...
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... Motor driver ICs FPin descriptions BA6849FP / BA6849FM BA6849FP / BA6849FP-Y / BA6849FM / BA6849FS BA6849FP-Y 865 ...
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... Motor driver ICs MA6849FS 866 BA6849FP / BA6849FP-Y / BA6849FM / BA6849FS ...
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... Motor driver ICs FInput / output circuits (1) Power save (3) Torque output ( and – (4) Hall input ( BA6849FP / BA6849FP-Y / BA6849FM / BA6849FS (2) Torque command input ) ) – – 867 ...
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... Motor driver ICs (5) Hall bias (6) FG output 868 BA6849FP / BA6849FP-Y / BA6849FM / BA6849FS (7) FR Output (8) Short brake Note: Resistance values are typical values. ...
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... Motor driver ICs FElectrical characteristics (unless otherwise noted 25_C, V BA6849FP / BA6849FP-Y / BA6849FM / BA6849FS = 5V 12V 12V) M2 869 ...
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... The phase relationship between the Hall input signals and the output current and voltage is shown in Fig.9. The motor position data input via the Hall pins is amplified by the Hall amplifier, and formed into waveforms by the matrix block.These signals are input to the output driver that supplies the drive current to the motor coils. 870 BA6849FP / BA6849FP-Y / BA6849FM / BA6849FS ...
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... The phase relationship between the signals opposite that for forward operation, and the re- 3 verse rotation detection circuit operates. The output goes OFF, and becomes open circuit. BA6849FP / BA6849FP-Y / BA6849FM / BA6849FS The gain (G current) is determined by the 0.255 / R EC The torque limit current ...
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... Short braking operates re- gardless of the torque command signal. FApplication example 872 BA6849FP / BA6849FP-Y / BA6849FM / BA6849FS (5) Other circuits When 3.5V or more is applied to the power save pin, all circuits are on. When 1.5V or less is applied, the IC en- ters power save mode ...
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... Hall input The input circuit shown in Fig.4 is used for the Hall inputs. The Hall elements can be connected either in series or in parallel. FElectrical characteristics curves BA6849FP / BA6849FP-Y / BA6849FM / BA6849FS (3) Thermal shutdown (TSD) When the junction temperature reaches 175_C, the and A coil outputs go open circuit. The thermal shut- ...
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... Motor driver ICs FExternal dimensions (Units: mm) 874 BA6849FP / BA6849FP-Y / BA6849FM / BA6849FS ...