M54687FP
Bi-Directional Motor Driver with Governor
REJ03F0048-0100Z
Rev.1.0
Sep.19.2003
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
Speed control 1
R input
S input
PSC1
R
S
GND
L input
L
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
NC
O
2
Output 2
P-V
CC
Power supply
O
1
V
R
GND
Output 1
High speed
control
M54687FP
Power supply L-V
CC
Speed control 2 PSC2
P-V
CC
Power supply
Outline 16P2N-A
NC: no connection
Rev.1.0, Sep.19.2003, page 1 of 8
RENESAS [ RENESAS TECHNOLOGY CORP ]
