m56785fp Mitsumi Electronics, Corp., m56785fp Datasheet
m56785fp
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m56785fp Summary of contents
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... DESCRIPTION The M56785FP is a semiconductor integrated circuit in order to drive the spindle motor. FEATURES Large power dissipation (Power Package). 3.3V DSP available. The supply voltage with wide range. High motor drive current . Low saturation voltage. (typical 1.2V at load current 500mA) Motor current control for both motor torque directions. ...
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... Note 1 – pins 23 28 Free Air Free Air M56785FP SPINDLE MOTOR DRIVER Function Hu+ Sensor amp. input Hu- Sensor amp. input Hv+ Sensor amp. input Hv- Sensor amp. input Hw+ Sensor amp. input Hw- Sensor amp. input GND Hall amplifier sensitivity select Automatic stop select ...
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... High] 2 [3.3v DSP available] [3.3v DSP available] pins 28 MODE4=OPEN or HIGH pins 28 MODE4=GND pin[MODE2], pin[MODE3 pin[MODE4] input voltage 36 pin[MODE2], pin[MODE3 pin[MODE4] input voltage 36 M56785FP SPINDLE MOTOR DRIVER Limits Unit Typ. Max. 5.0 5.5 V 12.0 13.2 V 12.0 13.2 V 700 mA Limits Min. Typ. Max. 0 100 500 6 ...
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... For example, using an 1 layer glass epoxy resin 3.0W board, the IC's power dissipation is 2.7W at least. using B-type board And it comes to 4.0W by using an improved 2 layer board. 2.7W The information of the type board is shown using C-type board in the board information. 75 100 125 150 M56785FP SPINDLE MOTOR DRIVER ...
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... Then, the IC bias current wil be a slight current (please refer to the electrical characteristics), and the hall bias output will be cut off. When the pin input is high, all the circuits will work. 2 M56785FP SPINDLE MOTOR DRIVER U Outer loator U W ...
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... RDS MODE3 V CC1 C I FORWARD Hw High RDS Low High FG Low Figure 5. MITSUBISHI <CONTROL / DRIVER IC> CC1 Hu+ + FG-amp - EC-ECR REVERSE Hv+ Hu+ Hw+ Comparator Hysteresis High RDS Low High FG Low M56785FP SPINDLE MOTOR DRIVER Hw- Hu- Hv+ Hv- Hw+ Hall sensor-amp Hu+ Hv+ ...
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... UN-AUTOMATIC STOP (NON-STOP) Figure 6. MITSUBISHI <CONTROL / DRIVER IC> M56785FP SPINDLE MOTOR DRIVER REVERSE TORQUE MODE SELECT FUNCTION In the 4 times speed and the 6 times speed CDROM drive system, the reverse braking style has been used for a deceleration of the rotation speed. However, in the CDROM drive system above an 8 times speed, the motor current above 0 ...
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... HIGH MODE2 LOW MODE1 LOW ALL BRAKING SHORT MODE BRAKING +1A MOTOR CURRENT FORWARD CURRENT REVERSE TORQUE CURRENT MOTOR STOP -1A ( Vbemf-Vd-Vsat ) / Ra M56785FP SPINDLE MOTOR DRIVER REVERSE BRAKING +60 0mA -60 0mA MOTOR STOP Vd ; diode voltage Vsat ; npn transistor saturation voltage Ra ; motor inner resistance ...
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... Load current (mA) (Condition Vcc2=6V,Vm=5V,Vcc=5V) 0.29 0.35 0.47 This device can use this voltage value due to motor drive. 0.49 0.38 0.32 600 800 1000 Load current (mA) M56785FP SPINDLE MOTOR DRIVER Top side saturation voltage 1.05 1.18 0.76 0.62 Bottom side saturation voltage 1200 Top side saturation 0.62 voltage 0.83 0.76 0.62 Bottom side ...
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... HB terminal voltage and Hall current characteristics. 1.6 1.4 1.2 1.0 0.85 0.8 0.6 0.4 0 Hall current (mA) MITSUBISHI <CONTROL / DRIVER IC> SPINDLE MOTOR DRIVER (Condition :Vcc=4.4V – 7V M56785FP ...
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... 104 Control PWM1 Reference PWM2 MITSUBISHI <CONTROL / DRIVER IC> SPINDLE MOTOR DRIVER com control BRAKING MODE SELECT Motor current sense resistor and M56785FP 12V Motor power supply 104 104 104 Start / Stop 0.5 5V Power Supply 10 F ...