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M54641L Datasheet(PDF) 1 Page - Mitsubishi Electric Semiconductor

No. de Pieza. M54641L
Descripción  Bi-DIRECTIONAL MOTOR DRIVER WITH BRAKE FUNCTION
Descarga  4 Pages
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Fabricante  MITSUBISHI [Mitsubishi Electric Semiconductor]
Página de inicio  http://www.mitsubishichips.com
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M54641L Datasheet(HTML) 1 Page - Mitsubishi Electric Semiconductor

   
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Bi-DIRECTIONAL MOTOR DRIVER WITH BRAKE FUNCTION
M54641L/FP
MITSUBISHI <CONTROL / DRIVER IC>
DESCRIPTION
The M54641 is a semiconductor integrated circuit that is capable of
directly driving a smallsize bi-directional motor rotating in both
forward and reverse directions.
FEATURES
q Wide range of operating voltage (VCC = 4 – 10V,VCC(max) = 20V)
q Low output saturation voltage in stationary motor circuit (large
voltage across motors)
q Built-in clamp diode
q Provided with output voltage control pin (VZ)
q Built-in thermal shutdown circuit (Tj(shut) = 120˚C standard)
APPLICATION
Sound equipment such as tape deck and radio cassette, and VTR
FUNCTION
The M54641 is an IC for driving a smallsize bi-directional motor
that rotates in both forward and reverse directions. Giving signal to
inputs IN1 and IN2 outputs the signal of the same phase to output
pins O1 and O2. That is, giving high-level signal to input IN1 and
low-level signal to input IN2 sets output O1 to high-level and output
O2 to low-level. Connection of a motor between output pins O1 and
O2 uses O1 as an output current source and O2 as an output
current sink to rotate the motor. In addition, giving the reverse
signal to inputs IN1 and IN2 sets O1 and O2 to low-level and high-
level, respectively, resulting in rotating the motor reversely.
However, when both IN1 and IN2 are set to “H”, both O1 and O2 are
set to low-level, resulting in sudden stop of motor rotation. (Brake
mode)
If the Zener diode of certain voltage, for example, is added to the
VZ pin, the output “H” voltage does not rise over the Zener voltage
and the motor rotates at constant speed.
If the VZ pin is connected to the output power supply VCC’ pin, the
rotating speed of the motor can be varied by varying the VCC’
voltage.
The motor rush current and the current with the motor put in
stationary status are as follows: Iop(max) = 800mA and IO(max) =
150mA.
PIN CONFIGURATION (TOP VIEW)
Outline 8P5
Output voltage
control
Power supply
Output 2
Input 2
Output power
supply
Input 1
Output 1
Input
Output
Remarks
IN1
No operation of IC
Reverse rotation
Brake
LOGIC TRUTH TABLE
1
4
3
2
5
6
7
8
VZ
VCC
O2
IN2
VCC
IN1
O1
GND
10
7
8
9
1
4
3
2
6
5
Outline 10P2-C
VZ
IN2
VCC
O1
NC
Output voltage
control
Input 2
Output power
supply
Output 1
GND
IN1
VCC
O2
NC
Input 1
Output 2
Power supply
NC: no connection
L
H
L
H
IN2
L
L
H
H
O1
“OFF”
state
H
L
L
O2
L
H
L
BLOCK DIAGRAM
Power supply
VCC
Output power supply
VCC
Constant voltage
source
Output voltage control
VZ
Output 2
O2
Output 1
O1
Input
circuit
Input
circuit
Control
circuit
Output
circuit
Output
circuit
Input 1 IN1
Input 2 IN2
GND
Forward rotation
ex
“OFF”
state


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