M56755AFP
DESCRIPTION
The M56755AFP is a semiconductor integrated circuit designed for a single chip controller for CD-ROM spindle motor. M56755AFP has a both (forward and reverse) motor torque control by the motor speed control terminal. M56755AFP 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 8 9
36 35 34 33 32 31 30 29 28
W V U RS MODE3 MODE4
FEATURES q 3.3V DSP available. 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 10 11 12 VM VCC2 EC ECR VCC1 HB 13 14 15 16 17 18
GND...
