Mitsubishi M54544L Datasheet

MITSUBISHI <CONTROL / DRIVER IC>

)

M54544L

Bi-DIRECTIONAL MOTOR DRIVER WITH BRAKE FUNCTION

DESCRIPTION

The M54544L is a semiconductor integrated circuit that is capable
of directly driving a smallsize bi-directional motor rotating in both
forward and reverse directions.

FEATURES

●Wide range of operating voltage (VCC=4 – 16V)

●Possible direct driving with TTL, PMOS and CMOS IC outputs

●Low output saturation voltage (large voltage across motors)

● Built-in clamp diode

● Large output current drive (IO(max) = ±1.2A)

● Provided with brake function

APPLICATION

Sound equipment such as tape deck and radio cassette, VTR, and
other general consumer appliances

FUNCTION

The M54544L 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 low­level (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 resistance of the motor is high (light load and small drive
current: tens of mA), and VCC is larger than VCC’, current does not
flow backward from the VCC pin to the VCC’ pin.

PIN CONFIGURATION(TOP VIEW

O

IN

IN

O1

CC2

2

1

2

1
2
3
4
5
6
7
8
9

Outline 9P9

Power supply 1

Output power supply 1

Output 2

Input 1

Input 2

Output 1

Output power supply 2

Power supply 2

VCC1

VCC’1

GND

VCC’2

V

LOGIC TRUTH TABLE

Input Output

IN

1 IN2

LL

HL

LH

HH

O

1 O2

“OFF” state “OFF” state

HL

LH
LL

M54544L

Remarks

No operation of IC

ex Forward rotation

Reverse rotation

Brake

BLOCK DIAGRAM

Output power supply 1 Output 1Power supply 1

VCC’1VCC1

1 2 3 7 8 9

Output 2

O2

4 5 6

IN1

Input 1

O

GND

Output power supply 2

1

2

IN

Input 2

Power supply 2

CC’2

V

V

CC2

Bi-DIRECTIONAL MOTOR DRIVER WITH BRAKE FUNCTION

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ABSOLUTE MAXIMUM RATINGS(Ta=25°C, unless otherwise noted

MITSUBISHI <CONTROL / DRIVER IC>

M54544L

Symbol

VCC(1)
VCC(2)
VCC’
V

I

VO
IO(max)
IO(1)
IO(2)
Pd
Topr
Tstg

Supply voltage(1)
Supply voltage(2)
Output supply voltage
Input voltage
Output voltage
Allowable motor rush current
Continuous output current(1)
Continuous output current(2)
Power dissipation
Operating temperature
Storage temperature

Parameter Conditions

With an external heat sink (3000mm

t

op=10ms : cycle time 0.2Hz or less

With an external heat sink (3000mm
Ta=75˚C

2

x 1.5mm)

2

x 1.5mm)

RECOMMENDED OPERATING CONDITION(Ta=25°C, unless otherwise noted

Symbol Conditions

V
I

O

VIH
VIL
t

B

CC

Supply voltage
Output current
“H” input voltage
“L” input voltage
Motor braking interval

Parameter

Ratings

-0.5 – +16

-0.5

– +20

-0.5

– +16

0 – VCC

– VCC’+2.5

-0.5

±1.2
±330
±600

1.15

-10

– 75

– 125

-55

Limits

Min. Typ. Max.

4

12

15

±300

10

2
0

100

V

CC

0.4

Unit

V
V
V
V
V

A
mA
mA

W

°C
°C

Unit

V

mA

V
V

ms

ELECTRICAL CHARACTERISTICS(Ta=25°C, unless otherwise noted

Symbol Test conditions UnitParameter

O=20V

O(leak)

I

VOH(1)

VOH(2)

VOL(1)

V

OL(2)

I

IH(1)
IH(2)

I

CC

I

Output leak current

“H” output saturation
voltage(1)

“H” output saturation
voltage(2)

“L” output saturation
voltage(1)

“L” output saturation
voltage(2)

“H” input current(1)
“H” input current(2)

Supply current

CC=VCC’=20V

V
VI1=VI2=0V

I1=2V

V

CC=VCC’=12V

CC=VCC’=12V

V

CC=VCC’=12V

V

V
VI2=0V

V

I1=0V

VI2=2V

I1=0V

V
VI2=2V

VI1=VI2=2V

I1=2V

V

CC=VCC’=12V

V

VI2=0V

VI1=VI2=2V
VCC=VCC’=12V, VI1=2V, VI2=0V
VCC=VCC’=12V, VI1=0V, VI2=2V

V

CC=VCC’=16V

Output open

V
VO=0V

I

OH(1)=-300mA

I

OH(1)=-500mA
OH(2)=-300mA

I
I

OH(2)=-500mA

I

OL(1)=300mA

IOL(1)=500mA
IOL(2)=300mA
IOL(2)=500mA

VI1=2V, VI2=0V
V

I1=0V, VI2=2V

VI1=VI2=2V
V

I1=VI2=0V

Limits

Min. Typ. Max.

100

-100

70
70

11.2

11.1

11.2

11.1

0.18

0.3

0.3

0.18

0.3

0.3

0.5

0.65

0.65

0.5

0.65

0.65
200
200

10.8

10.7

10.8

10.7

30
60

0

µA

V

V

V

V

µA
µA

mA