M56785FP Datasheet PDF

MITSUBISHI M56785FP SPINDLE MOTOR DRIVER DESCRIPTION The M56785FP is a semiconductor integrated ...

MITSUBISHI M56785FP SPINDLE MOTOR DRIVER DESCRIPTION The M56785FP is a semiconductor integrated circuit in order to drive the spindle motor. PIN CONFIGURATION (TOP VIEW) N.C S/S RDS FG CI MODE2 MODE1 1 2 3 4 5 6 7 8 9 42 41 40 39 38 37 36 35 34 N.C W V U RS MODE3 MODE4 FEATURES q Large power dissipation (Power Package). q 3.3V DSP available. q The supply voltage with wide range. q High motor drive current . q Low saturation voltage. (typical 1.2V at load current 500mA) q Motor current control for both motor torque directions. q Reverse torque mode select [SHORT BRAKING,etc]. q Sleep mode. (Zero total current ) q Hall amplifier sensitivity select. (Minimum voltage : 35mVp-p or 50mVp-p) q FG signal output terminal. q Automatic stop select. (Removable function) q Reverse detected signal pin. M56785FP 10 GND 11 12 13 14 VM VCC2 EC ECR VCC1 HB N.C 15 16 17 18 19 20 21 33 32 31 30 29 28 27 26 25 24 23 22 HwHw+ HvHv+ HuHu+ N.C GND APPLICATION CD-ROM,DVD,DVD-ROM,DVD-RAM etc. Outline 42P9R-A N.C: no connection BLOCK DIAGRAM U 39 V 40 W 41 S/S 2 RS 38 VCC1 19 VM VCC2 15 16 ++ - Vref 8 to 14 GND MODE1 7 BRAKING MODE CHANGE I/I Converter 120° MODE2 6 29 to 35 MATRIX SENSE TSD MODE3 FG RDS 37 4 3 23 Hu+ 24 Hu25 Hv+ 26 Hv27 Hw+ 28 Hw20 HB 5 CI 17 EC 18 ECR FG RDS + + + Hall Bias V/I Converter GND MODE4 36 MITSUBISHI M56785FP SPINDLE MOTOR DRIVER PIN DESCRIPTION Pin No. 1 2 3 4 5 6 7 8 Symbol N.C S/S RDS FG CI MO...