Mitsubishi M56781FP Datasheet

MITSUBISHI <CONTROL / DRIVER IC>

)

U

M56781FP

2-CHANNEL ACTUATOR MOTOR DRIVER

DESCRIPTION

The M56781FP is a semiconductor IC developed as the motor driver used DVD, DVD-ROM, CD-ROM and CD Player. This device include 2 channel BTL drivers and can drive 2 actuators with one IC at the same time. Also, the mute circuit, thermal protection circuit and VREF voltage monitor circuit functions are included.

FEATURES

●Low output saturation voltage (typ. 1.35V at 0.5A).

●Wide operating supply voltage range (4.5 – 15V).

●High current drive capability (maximum 0.9A).

●Low crossover distortion.

●High frequency capability.

APPLICATION

DVD, DVD-ROM, CD-ROM, CD-PLAYER

PIN CONFIGURATION(TOP VIEW

GND

VM2+ MUTE2B MUTE2A

MUTE1

CC2

V

CC1

V

IN-

IN+

OUT

OP

VM1+

GND

1 2 3 4 5

7

11 12

Outline 24P2Q-A

24

GND

23

VM2-

22

CTL2

21

CTL2+

M56781FP

20

CTL2-

196

V

18

TSDS

178

CTL1-

169

CTL1+

1510

CTL1

14

VM1-

13

GND

OUT

REF

OUT

BLOCK DIAGRAM

IN+ IN-OPOUT

8910

+-

A3

GND

1, 12, 13, 24

VCC2

CTL1+

16

+

-

1.4V

+-

A1

A2

+

-

CTL1OUT

1517

VM1+ VM1-CTL1-

11

25k 25k

PA

+-

×5

5k

25k

PA

5k

×5

+-

25k

CH1

CH2

25k

5k

25k

MUTE1

514

VCC1

25k

PA

+-

×5

5k

PA

5k

×5

+-

25k

VCC1

2

Vrefm

VCC2

2

VCC2

H : Mute On L, Open : Mute Off

CH1 MUTE

TSD

CH2 M

TE

H, H Mute On

VCC1

7

VCC2

6

19

VREF

21 20

CTL2+

CTL2-

22

CTL2OUT

2

VM2+

23

VM2-

MUTE2A

3

4 18

MUTE2B

TSDS

)

PIN DESCRIPTIONS

MITSUBISHI <CONTROL / DRIVER IC>

M56781FP

2-CHANNEL ACTUATOR MOTOR DRIVER

Pin No.

1 2 3 4 5 6 7 8

9 10 11 12

Symbol Function

GND VM2+ MUTE2B MUTE2A MUTE1 V

CC2

V

CC1

ININ+ OP

OUT

VM1+ GND

GND CH2 Amp. non-inverted output CH2 mute B CH2 mute A CH1 mute Power supply 2 Power supply 1 Op-Amp. inverted input Op-Amp. non-inverted input Op-Amp. output CH1 Amp. non-inverted output GND

ABSOLUTE MAXIMUM RATING(Ta = 25°C

Symbol Conditions UnitsParameter

CC Power supply

V Io

Vin Pd

Kθ Tj Topr Tstg

Maximum input voltage of each terminals

Operating temperature Storage temperature

V

With infinite heatsink With infinite heatsink 42.1

Pin No.

13 14 15 16 17 18 19 20 21 22 23 24

76

, pins

CC = VBS = 12V

4 5 8 9 16 17 193 2120

3 , , , , , , , , , pin

Symbol

GND VM1CTL1 CTL1+ CTL1TSDS V

REF

CTL2CTL2+ CTL2 VM2GND

OUT

Function

GND CH1 Amp. inverted output CH1 input Amp. output CH1 Amp. non-inverted input CH1 Amp. inverted input Thermal monitor Reference voltage input CH2 Amp. inverted input CH2 Amp. non-inverted input CH2 input Amp. output CH2 Amp. inverted output GND

Rating

15

0 – VCC

2.97

150

-20 – +75

-40 – +150

V

mAOutput Current 900

V

WPower dissipation

°C/WThermal derating

°CJunction temperature °C °C

MITSUBISHI <CONTROL / DRIVER IC>

)

M56781FP

2-CHANNEL ACTUATOR MOTOR DRIVER

RECOMMENDED OPERATING CONDITIONS

Symbol

CC1, 2

V

Power supply

Parameter

Min.

Limits

Typ.

12

Max.

ELECTRICAL CHARACTERISTICS(Ta = 25°C, VCC1= VCC2= VBS2 = 12V, Load = 0 unless otherwise noted.

Symbol Measurement condition

CC1

I

ICC2

Power supply current - 1 (at Enable condition)

Power supply current - 2 (at Mute condition)

ICC3 Power supply current - 3

V

SAT

VOFS1

VOFS2

GAIN

MUTEON

V

Output saturation voltage

Output Amp. Offset voltage 1

Output Amp. Offset voltage 2 Voltage Gain between

input and output Mute ON voltage

Parameter

76

, pins current at VREF = 0.

76

, pins current

at V

REF = VCTL = 2.5V, MUTE = 5V.

76

, pins current

at VREF = VCTL = 2.5V, MUTE = 0V. Top and Bottom power Transistors

saturation voltage (at I

REF = VCTL = 2.5V, VCC = VBS = 5V

V

O = 0.5A).

(CTL Amp. = buffer.)

REF = VCTL = 2.5V, VCC = VBS = 12V

V (CTL Amp. = buffer.)

{VM(+) – VM(-)}

(V

CTL – VREF)

(CTL Amp. = buffer.)

CH2 is Mute-ON mode when MUTE2A = H and MUTE2B = H condition.

Units

V

Limits

Min. Typ. Max.

—

-27

-78

19.1

2.0

1.0

4.5

23

1.35

—

20

—

2.0

7.0

37

1.9

+27

+78

20.8

—

Units

mA

V

mV

dB

V

VMUTEOFF IMUTE

Mute OFF voltage Mute input current

MUTE1 = MUTE2A = MUTE2B = 5V

V0.8——

µA250190—

MITSUBISHI <CONTROL / DRIVER IC>

)

(

)

(

)

(

)

02.03.04.0

2

(W)

(°C)

k

M56781FP

2-CHANNEL ACTUATOR MOTOR DRIVER

ELECTRICAL CHARACTERISTICS(Ta = 25°C, VCC1= VCC2= VBS1= VBS2= 12V, Load = 0

Symbol Test conditions UnitsParameter

CTLIN CTL Amp. Input voltage range

V

A1 and A2 Amps.

Min. Typ. Max.

1.5

Limits

—

V

CC-1.2

V

VCTLIN

VA3IN

VA3OUT

VA3OFS

VREFS

VREF1

CTL Amp. Output voltage range

A3 Amp. Input voltage range

A3 Amp. Output voltage range

A3 Amp. Offset voltage

V

REF monitor voltage

REF input current

V

A1 and A2 Amps. Load = 0

Load = 0

Load = 0 +5— When VREF voltage is under this values,

M56781FP makes the Bias shut off. VREF = 2.5V

1.25V ≤ VCTL ≤ 3.75V

CH1 AND CH2 INPUT AND OUTPUT CHARACTERISTICS

Non-inverted Amp.

Gain = 5.0 times

V

INPUT

REF

Reference

CTL+

CTL

OUT

+

-

R

CTL-

R

Voltage

REFM

V = 5.65V

Inverted Amp.

Gain = 5.0 times

+

VM+

-

VM-

-

VREF

2.5V

VREFM

Input

VM1-

0.5V

2.5V

1.0

-5

—

-1

—

0

—

CC-1.0

V

CC-1.9

V

CC-1.0

V

mV

1.4

-0.37

1.8

0.1

VM1+

V

mA

THERMAL DRATING CURVE

5.0

4.5

Power dissipation (Pd)

1.

0

25 50 75 100 125 150

Ambient temperature (Ta)

With infinite heatsin

Without heatsink

TYPICAL CHARACTERISTICS

(

)

Output Saturation Voltage - Load Current Characteristics.

VCC1 = VCC2 = 12V

(V)

12

11

0.84

0.89

2-CHANNEL ACTUATOR MOTOR DRIVER

Top side saturation voltage

0.95

MITSUBISHI <CONTROL / DRIVER IC>

M56781FP

1.00

1.05

Output Voltage

2

1

0.06

0

100 200 300 400 500

FREQUENCY CHARACTERISTICS

(dB)

40

GAIN

20

0

0.12

GAIN

PHASE

The voltage range that is able to drive a motor.

0.18 0.24

0.30

Bottom side saturation voltage

(mA)

(deg)

180

PHASE

90

0

-20

-40

0.03 0.06 0.1 0.3 0.6 1 3 6 10 30 60 100 300 600

FREQUENCY

-90

-180

kHz

MITSUBISHI <CONTROL / DRIVER IC>

2-CHANNEL ACTUATOR MOTOR DRIVER

APPLICATION CIRCUIT This show the 4 actuators drive circuit using two M56781FP.

M56781FP

12V

CC2VCC1

V

OUT

CTL1

Tracking

12V

5R

R

-

CTL1-

Input

VM1+

PA

+

A1

+

CTL1+

5R

-

R

offset revise

VREF

resistance

5R

R

VREF

VM1-

PA

+

-

5R

R

Vrefm1

= 5.65V

MUTE1

IN+

VREF

+

IN-

-

A3

CH2

MUTE2A

Traverse

OPout

MUTE

MUTE2B

DSP

CTL2out

Input

.

5RR

-

VM2+

PA

+-

A2

CTL2-

5RR

+

CTL2+

offset revise

M

resistance

VREF

M

5R

R

VM2-

PA

+-

5R

R

Vrefm2

= 5.65V

CC2VCC1

V

CTL1OUT

Focus

5R

R

-

CTL1-

Input

VM1+

PA

+

A1

5R

-

R

+

CTL1+

offset revise

resistance

VREF

5R

R

VM1-

PA

+

-

5R

R

Vrefm1

= 5.65V

IN+

+

MUTE1

Tray

IN-

-

A3

CH2

MUTE2A

OPout

MUTE

MUTE2B

5R

R

-

CTL2out

CTL2-

VM2+

PA

-

+

A2

+

CTL2+

Input (+)

Input (-)

VM2-

5R

R

5R

R

5R

PA

-

+

R

Vrefm2

= 5.65V

If MUTE2A and MUTE2B are connected to Input(+) and Input(-),

this device can be shut off the output when Input(-) and Input(+)

are High condition.

H

Shut off

Forward

Input (+)

L

Stop (SB) L

H Reverse

Tray

Input (-)

Mitsubishi M56781FP Datasheet

Specifications and Main Features

Frequently Asked Questions

User Manual