M56755FP Datasheet PDF

MITSUBISHI M56755FP SPINDLE MOTOR DRIVER DESCRIPTION The M56755FP is a semiconductor integrated ...

MITSUBISHI M56755FP SPINDLE MOTOR DRIVER DESCRIPTION The M56755FP is a semiconductor integrated circuit designed for a single chip controller for CD-ROM spindle motor. M56755FP has a both (forward and reverse) motor torque control by the motor speed control terminal. M56755FP has the several braking mode that an user can flexibly select in order to generate the reverse torque. Also, this device includes a bias circuit for Hall Sensor, a current limit circuit and a thermal shut down function. PIN CONFIGURATION (TOP VIEW) S/S RDS FG CI MODE2 MODE1 1 2 3 4 5 6 7 36 W 35 V 34 U 33 RS 32 MODE3 31 MODE4 30 29 28 GND 27 26 25 24 Hw23 Hw+ 22 Hv21 Hv+ 20 Hu19 Hu+ FEATURES q The supply voltage with wide range. (4.5V to 13.2V) q High motor drive current (1.2A) q Motor current control for the both motor torque is possible. q Reverse torque mode select (SHORT BRAKING, etc) q Sleep mode q Hall amplifier sensitivity select q Automatic stop select (with reverse detected signal pin) GND 8 9 10 11 12 VM 13 VCC2 14 EC 15 ECR 16 M56755FP APPLICATION CD-ROM, DVD, DVD-ROM etc. VCC1 17 HB 18 Outline 36P2R-D BLOCK DIAGRAM U 34 V 35 W 36 S/S 1 RS 33 VCC1 17 7 VM VCC2 13 8 14 Vref ++ I/I converter 120˚ MATRIX 25 MODE4 31 SENSE TSD MODE3 FG RDS 32 3 2 19 Hu+ 20 Hu21 Hv+ 22 Hv23 24 18 HB 4 CI 15 EC 16 ECR FG RDS + + + 28 Hall bias 29 30 V/I converter 26 27 GND 9 GND 10 11 12 MODE1 6 MODE2 BRAKING MODE CHANGE 5 Hw+ Hw- MITSUBISHI M56755FP SPI...