m63024 Mitsumi Electronics, Corp., m63024 Datasheet - Page 7

• Manufacturer Part Number: m63024
• Description: Spindle Motor And 5ch Actuator Driver
• Manufacturer: Mitsumi Electronics, Corp.

This IC has two MUTE terminal (MU1 and MU2).
It is possible to control ON / OFF of each channel by external logic inputs.
It has f our kinds of f unction f or select.In case of SELECT1, the bias of all circuit becomes OFF.
Theref ore, this mode is aVailable in order to reduce the power dissipation when the waiting mode.
In case of SELECT2, the bias of other than Loading circuit becomes OFF.
Theref ore, this mode is aVailable in order to reduce the power dissipation when the actiVe mode.
In case of SELECT3,it is possible to select the short braking to take the brake of Spindle motor.
Also,in case of SELECT4,it is possible to select PWM rev erse braking when in the same.
Channel select function
SELECT4
SELECT3
SELECT2
SELECT1
Loading channel
The loading channel is the circuit of BTL Voltage driv e.
This circuit has the ref erential input.
Output swing is determined with
it is possible f or this channel to use f or the slide motor ,
the f ocus coil and the tracking coil.
The input terminal is high impedance.
In case of one MCU port, if use three state port,
it is possible f or this channel to haVe the stop f unction.
It is possible to do v ariable a gain by external resistor.
MU1
Logic control
H
H
L
L
MU2 Loading Slide1 Slide2
H
H
L
L
Vin X 8. Also,
Off
Off
Off
On
Off
Off
On
On
(
SPINDLE MOTOR AND 5CH ACTUATOR driveR
7
drive
/
Off
Off
On
On
17)
channel
Forcus TrackingSpindle (SPIN<REF)
M63023/024/026/027FP
REF
LOIN+
Off
Off
On
On
MITSUBISHI SEMICONDUCTORS
VM3
LOADING
Off
Off
Channel
On
On
Off
Off
On
On
+
LO+
-
LO-
REV010307
Vo
Brake select
Short
PWM
--
--
M
Rev erse
Forward