M54649L Mitsubishi Electronics America, Inc., M54649L Datasheet

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M54649L

Manufacturer Part Number
M54649L
Description
Dual Bi-directional Motor Driver
Manufacturer
Mitsubishi Electronics America, Inc.
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
M54649L
Manufacturer:
MIT
Quantity:
20 000
DESCRIPTION
The M54649L is a semiconductor integrated circuit that is capable
of directly driving two smallsize bi-directional motors rotating in
both forward and reverse directions.
FEATURES
APPLICATION
Sound equipment such as tape deck and radio cassette, VTR, and
other general consumer appliances
FUNCTION
The M54649L consists of input circuit, control circuit, constant
current circuit and output circuit.
Two motors are connected to the IC; both of them are connected to
output pin O
connected to output O
levels of input pins IN
control statuses of ‘forward rotation’, ‘reverse rotation’, ‘brake’ and
‘OFF’ are selectable.
The input circuit provides hysteresis functions that prevent
malfunction due to rounding at rising edge and falling edge of input
signals.
Both the current source side and sink side of the output circuit
adopt Darlington circuit configuration of the NPN transistor,
allowing up to ±1.6A output current to flow.
In addition, the IC contains a thermal protection circuit to put all
outputs in the “OPEN” mode for preventing the IC from thermal
braking when failures such as motor lock occurs.
BLOCK DIAGRAM
Capable of driving two motors in both forward and reverse
directions
Equipped with “H” output voltage control pin
Built-in thermal protection circuit
Large output current drive (I
Wide range of operating supply voltage (V
Capable of directly driving with CMOS IC output
1
, and one is connected to output O
1
Input 1 IN
Input 2 IN
Input 3 IN
3
to IN
. The motors are controlled by three input
3
. As shown in the logic truth table, the
O(max)
1
2
3
= 1.6A)
CC
= 4 – 18V)
2
, and the other is
Control circuit
PIN CONFIGURATION (TOP VIEW)
Power supply 2 for output
shutdown circuit)
Constant current
Input for output control
circuit (thermal
DUAL Bi-DIRECTIONAL MOTOR DRIVER
MITSUBISHI <CONTROL / DRIVER IC>
Power supply 1
Output 2
Output 3
Output 1
Input 1
Input 2
Input 3
GND
V
V
IN
IN
IN
CC1
CC2
O
O
V
O
R
2
3
1
2
3
1
V
VR
O
O
GND
V
O
CC2
CC1
10
1
3
2
1
2
3
4
5
6
7
8
9
Outline 10P5
Power supply 2 for output
Input for output control
Output 1
Output 2
Output 3
M54649L

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M54649L Summary of contents

Page 1

... DESCRIPTION The M54649L is a semiconductor integrated circuit that is capable of directly driving two smallsize bi-directional motors rotating in both forward and reverse directions. FEATURES Capable of driving two motors in both forward and reverse directions Equipped with “H” output voltage control pin Built-in thermal protection circuit Large output current drive ( ...

Page 2

... 500mA -500mA ±500mA ±500mA 1.0V IN1,2 0mA Output OPEN O MITSUBISHI <CONTROL / DRIVER IC> M54649L DUAL Bi-DIRECTIONAL MOTOR DRIVER Ratings -0.5 – +20.0 -0.5 – +22.0 -0.5 – +7.0 -2.0 – V +2.5 CC ±1.60 ±600 2.78 -20 – 75 -55 – 125 Limits Min. Typ. 4.0 12.0 0.0 3.5 0.0 0.0 125 150 ...

Page 3

... R 16V 30 F 12V When another power supply is used for MITSUBISHI <CONTROL / DRIVER IC> M54649L DUAL Bi-DIRECTIONAL MOTOR DRIVER Use the IC with C set to 0 less. M circuited. Use the IC with R set Watt class or higher). O “H” output voltage V is given by the following formula: ...

Page 4

... When the IC is used at a high speed for PWM, etc., note that pin is output (to R switching of output results in delay of approx when V CC2 CC1 R . CC1 V CC1 V CC2 OUT calculated by the d MITSUBISHI <CONTROL / DRIVER IC> M54649L Time of continuity : 50msec Voltage between collector and emitter : (V) CE ...

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