M56785FP Datasheet Text
MITSUBISHI <CONTROL / DRIVER IC>
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...