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M54543AL Datasheet(PDF) 4 Page - Mitsubishi Electric Semiconductor

No. de Pieza. M54543AL
Descripción  Bi-DIRECTIONAL MOTOR DRIVER WITH BRAKE FUNCTION AND THERMAL SHUT DOWN FUNCTION
Descarga  4 Pages
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Fabricante  MITSUBISHI [Mitsubishi Electric Semiconductor]
Página de inicio  http://www.mitsubishichips.com
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M54543AL Datasheet(HTML) 4 Page - Mitsubishi Electric Semiconductor

   
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Bi-DIRECTIONAL MOTOR DRIVER
WITH BRAKE FUNCTION AND THERMAL SHUT DOWN FUNCTION
M54543AL
MITSUBISHI ICs (AV COMMON)
APPLICATION EXAMPLES
1) Motor speed control by VCC and VCC'
9
1
8
7
6
5
4
3
2
M
M54543AL
R1=2
R2=3
VB
INPUT 2
C
10 to 100
µF
INPUT 1
2) Motor speed control by the VCC'
9
1
8
7
6
5
4
3
2
M
M54543AL
2
VCC
INPUT 2
C
1 to 10
µF
INPUT 1
C
10 to 100
µF
3) Motor speed control by the VCC
9
1
8
7
6
5
4
3
2
M
M54543AL
INPUT 2
C
10 to 100
µF
INPUT 1
1 to 10
µF
2
VCC'
C
PRECAUTIONS FOR APPLICATION
(1) If the motor resistance is high (small output current: several
tens of mA at a light load) and Vcc is greater than Vcc' in
application examples 2) and 3), current may counter-flow from
the Vcc pin to the Vcc' pin.
The motor can work at a light load even when the Vcc' pin is
opened. For light-load applications, use the M54544AL.
The thermal protection of the IC may not work depending on an
abnormal condition (such as oscillation, low supply voltage or
output short). When using the function, check its operation in
the actual using state.
If the motor has a large counter electromotive force at a braking
time, etc., the internal parasitic Di may malfunction.
If fly-back current of 1A or more flows, put a shottkey Di
between the output and the GND.
Remember that the IC has an about 10
µs delay in output
switching for high-speed applications such as PWM.
(2) As far as motor control and driver IC's are concerned, some
possibilities are considered for these IC's to cause such
unexpected cases as fire or smoke if they are used beyond its
ratings in datasheet or used, even transiently, under the
overload conditions. So your action will be highly appreciated to
fully look into the rating limits and the using conditions before
you use these IC's.
And if these IC's are to be used under the conditions out of our
specifications, please never fail to give us a contact as to under
what conditions they are used.


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