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M54544AL Datasheet(PDF) 1 Page - Mitsubishi Electric Semiconductor

No. de Pieza. M54544AL
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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M54544AL Datasheet(HTML) 1 Page - Mitsubishi Electric Semiconductor

   
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Bi-DIRECTIONAL MOTOR DRIVER
WITH BRAKE FUNCTION AND THERMAL SHUT DOWN FUNCTION
M54544AL
MITSUBISHI <CONTROL / DRIVER IC>
PIN CONFIGURATION (TOP VIEW)
DESCRIPTION
The M54544AL is a semiconductor integrated circuit that is
capable of directly driving a smallsize bi-directional motor rotating
in both forward and reverse directions.
FEATURES
qWide range of operating voltage (VCC=4 – 16V)
qPossible direct driving with TTL, PMOS and CMOS IC outputs
qLow output saturation voltage (large voltage across motors)
qBuilt-in clamp diode
qLarge output current drive (IO(max)=
±1.5A)
qProvided with brake function
qBuilt-in thermal shutdown protection circuit
APPLICATION
Sound equipment such as tape deck and radio cassette, VTR, and
other general consumer appliances
FUNCTION
The M54544AL is an IC for driving a smallsize bi-directional motor
that rotates in both forward and reverse directions. When both
inputs 1 and 2 are set to low-level, outputs 1 and 2 are set to
“OFF”. When input 1 is set to high-level and input 2 is set to low-
level, output 1 is set to high-level and output 2 is set to low-level
(forward rotation status). When input 1 is set to low-level and input
2 is set to high-level, output 1 is set to low-level and output 2 is set
to high-level (reverse rotation). When both inputs 1 and 2 are set to
high-level, both outputs 1 and 2 are set to low-level (brake status).
The power supply (VCC) to the control circuit and the power supply
(VCC’) for output are independently provided. The rotating speed of
the motor can be therefore changed by using VCC and VCC’ as
different power supplies and by making VCC or VCC’ variable.
If the motor resistance is high (light load and small driving current:
tens of mA), and VCC is larger than VCC’, current does not flow
backward from the VCC pin to VCC’ pin.
Outline 9P9
1
4
3
2
5
6
7
8
IN1
VCC1
VCC1
GND
IN2
VCC2
9
VCC2
O1
Input 1
Power supply 1
Output power supply 1
Input 2
Output power supply 2
Power supply 2
Output 2
Output 1
O2
Input
Output
Remarks
IN1
IN2
LL
HL
LH
HH
“OFF” state “OFF” state
HL
LH
LL
O1
O2
No operation of IC
ex Forward rotation
Reverse rotation
Brake
LOGIC TRUTH TABLE
BLOCK DIAGRAM
1
3
7
9
4
5
6
IN1
VCC1
VCC1
O2
Output power supply 1
Output 1
Power supply 1
O1
Output 2
VCC2
Output power supply 2
VCC2
Thermal
protection
circuit
Input 1
IN2
Input 2
GND
Power supply 2
In addition, built-in thermal protection circuit protects the IC from
thermal destruction in case of abnormal condition such as motor
blocking.
Input control
circuit
2
8


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