Mitsubishi M54687FP Datasheet
MITSUBISHI <CONTROL / DRIVER IC>
M54687FP
Bi-DIRECTIONAL MOTOR DRIVER WITH GOVERNOR
DESCRIPTION
The M54687FP is a semiconductor integrated circuit that is
capable of directly controlling the rotating direction and rotating
speed of a smallsize bi-directional motor rotating in both forward
and reverse directions.
FEATURES
● Capable of controlling the speed in forward and reverse rotating
directions
● Capable of controlling the speed in high speed mode
● Large output current drive (IO(max) =700mA)
● Built-in clamp diode
● Flat package (16P2N )
APPLICATION
Micro-cassette for phone-answering machine, AV equipment, and
other general consumption appliances
FUNCTION
The M54687FP is an IC that can control the forward rotation,
reverse rotation and speed of small DC brush motor.
For the basic operation of this IC, output modes are selected, as
shown in the logic truth table, by entering appropriate H/L level into
the R, L and S inputs.
Two resistances are put between the output pin and the PSC pin
and the resistance ratios are appropriately adjusted to perform the
speed control.
In addition to the above, speed control can be done by varying the
voltage at VR pin, in the high speed mode.
PIN CONFIGURATION (TOP VIEW)
R input
S input
L input
PSC1
GND
L-V
PSC2
R
S
L
CC
1
2
M54687FP
3
4
6
7
Outline 16P2N-A
16
15
14
13
125
11
10
98
Speed control 1
Power supply
LOGIC TRUTH TABLE
Input
L
R
H
H
L
H
H
L
L
L
H
H
L
L
L
H
H
L
G: Governor control output mode
FG: Rotating speed controllable with the voltage at V
precision is worse than G.)
Output
S
O1
H
H
H
H
H
FG
H
G
L
L
OFF
L
L
L
O2
FG
G
H
H
L
OFF
Mode
FF
PLAY
REW
REV
BRAKE
STB
Forward rotation high speed governor
Forward rotation governor
Reverse rotation high speed governor
Reverse rotation governor
Brake operation
Standby mode output high imp.
Reserved
Power supply
P-VCC
O1
Output 1
High speed
VR
control
GND
NC
O
2
Output 2
P-VCC
Power supplySpeed control 2
NC: no connection
R pin (However, the
BLOCK DIAGRAM
Speed control 1
PSC1
14
1
voltage
Reference
High Speed
control
VR
( – )
Output 1
RL S
R input L input S input
Output 2
O
1
O2
15 10
Activation circuit
Control circuit
362
( – )
Speed control 2
PSC2
8 7
voltage
Reference
Constant voltage,
Constant current
13
4 5 12
GND
Power supply
V
CC
9
16
MITSUBISHI <CONTROL / DRIVER IC>
Bi-DIRECTIONAL MOTOR DRIVER WITH GOVERNOR
ABSOLUTE MAXIMUM RATINGS ( Ta=25°C, unless otherwise noted )
Symbol
VCC
VI
VO
IOP
I
O
P
d
opr
T
T
stg
Parameter
Supply voltage
Input voltage
Output voltage
Allowable motor rush current
Continuous output current
Power dissipation
Operating temperature
Storage temperature
ON 100ms, duty of 1% or less.
t
However, Pd must not exceed the maximum rating.
When mounted in board
Conditions
RECOMMENDED OPERATING CONDITION ( Ta=25˚C, unless otherwise noted)
Symbol
VCC
VIH “H” input voltage
V
IL “L” input voltage
V
R
IO 200mA when FF/REW speed is controlled.
∗
Supply voltage 6.0
VR control voltage range∗
Parameter
Min.
2.0
0
Limits
Typ.
9.0 13.0
Max.
VCC
0.4
VCC
Unit
V
V
V
V0
M54687FP
Ratings
– +14
-0.5
-0.5
– VCC
-0.5
– VCC+2
±700
±200
1.14
-20
– 75
-40
– 125
Unit
V
V
V
mA
mA
W
˚C
˚C
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