Datasheet KA3082B Datasheet (Fairchild Semiconductor)

KA3082

Bi-Directional DC Motor Driver

www.fairchildsemi.com

Features

• Built-in Brake Function for Stable Brake Characteristics.

• Built-in Element to Absorb a Surge Current Derived From
Changing Motor Direction and Braking Motor Drive.

• Motor Speed Control by an External Voltage.

• Stable Motor Direction Change.

• Interfaces With CMOS Devices.

• Built-in the Thermal Shut Down Circuit (165°C).

• Low Standby Current. (6.5mA)

Description

The KA3082 is a monolithic integrated circuit designed for
driving bi-directional DC motor with braking and speed
control, and it is suitable for the loading motor driver of
VCR, CDP, and TOY systems. The speed control can be
achieved by adjusting the external voltage of the speed
control pin. It has two pins of logic inputs for control ling the
forward/ reverse and braking.

10-SIP

Target Appli cations

• Video Cassette Recorder (VCR) Loading Motor

• Low Current DC Motor Such as Audio or Video
Equipment.

• General DC Motor

©2002 Fairchild Semiconductor Corporation

Ordering Information

Device Package Operating Temp.

KA3082B 10-SIP -25°C ~ +75°C

Rev. 1.0.2

KA3082

Pin Assignments

KA3082

GND V

12345678910

O1

V

V

Z1

CTLVIN1

V

IN2

SV

CC

PV

CCVZ2

Pin Definitions

Pin Number Pin Name I/O Pin Function Description

1 GND - Ground
2V
3V
4V
5V
6V
7SV
8PV
9V

10 V

O1

Z1

CTL

IN1
IN2

CC
CC

Z2

O2

O Output 1

- Phase Compensation
I Motor Speed Control
I Input 1
I Input 2

- Supply Voltage (Signal)

- Supply Voltage (Power)

- Phase Compensation

O Output 2

V

O2

Internal Block Diagram

BIAS

1234

GND

2

V

O1

DRIVER OUT

PRE DRIVER

LOGIC SWITCH

5

V

Z1

V

CTL

V

IN1

678910

V

IN2

SV

CC

TSD

PV

CC

Z2

V

O2

V

Equivalent Circuits

Description Pin No. Internal Circuit

KA3082

Vcc

Vcc

Output 2, 10

Phase

Compensation

3, 9

2

10

V

CC

50Ω

3
9

Speed Control 4

Vcc

VCC

4

Vcc

3

KA3082

(Continued)

Equivalent Circuit

Description Pin No. Internal Circuit

Input 5, 6

SV

CC

PV

CC

Vcc

VCC

5
6

V

CC

7
8

7
8

Vcc

4

Absolute Maximum Ratings (Ta=25°°°°C)

Parameter Symbol Value Unit Remark

Supply Voltage V
Maxium Output Current I
Power Dissipation P
Operating Temperature T
Storage Temperature T

Note:

1. Duty 1 / 100, pulse wid t h 50 0µs

2. 1) When mounted on glass epoxy PCB (76.2 × 114 × 1.57mm)

2) Power dissipation reduces 9.6mV / °C for using above Ta=25°C.

3)

Do not exceed Pd and SOA(Safe Operating Area).

CCmax
Omax

d
OPR
STG

18 V -

note1

1.6

1.2

note2

A-

W-

-25 ~ +75 °C-

-55 ~ +125 °C-

Power Dissipation Curve

Pd (mW)

KA3082

1, 200

SOA

0

0 25 50 75 100 125

150

Ambient temperature, Ta [°C]

15

Recommened Operating Conditions (Ta=25°°°°C)

Parameter Symbol Operating voltage range Unit

Operating Supply Voltage SV

Note:

Caution 1) PV
Caution 2) When PVCC is above 16V, the V

CC

≤ SV

CC

CTL

CC,PVCC

must be opened or 8.5 ≤ V

7 ~ 18 V

≤ PV

CTL

CC

5

KA3082

Electrical Characteristics (Ta=25°°°°C, VCC=SVCC=PVCC=12V)

Parameter Symbol Conditions Min. Typ. Max. Unit

Quiescent Current I
Min. Input-on Current 1 I
Min. Input-on Current 2 I
Input Threshold Voltage 1 V
Input Threshold Voltage 2 V
Output Leakage Current 1 I
Output Leakage Current 2 I
Zener Current 1 I
Zener Current 2 I
Output Voltage 1 V
Output Voltage 2 V
Saturation Voltage 1 (Upper) V
Saturation Voltage 2 (Upper) V
Saturation Voltage 1 (Lower) V
Saturation Voltage 2 (Lower) V

CC2

IN1

IN2
ITH1
ITH2

OL1
OL2

Z1
Z2

O1
O2

SAT1IO

SAT2
SAT3
SAT4

Pin5 & 6: GND, RL=∞ 46.59.5mA
RL=∞, pin5=I
RL=∞, pin5=L, pin6=I

, pin6=L - 10 30 µA

IN1

IN

-1030µA
RL=∞, pin5=VIN, pin6=L 1.0 1.3 1.6 V
RL=∞, pin5=L, pin6=V

IN

1.0 1.3 1.6 V
RL=∞, pin5 & 6=GND - 0.01 1 mA
RL=∞, pin5 & 6=GND - 0.01 1 mA
RL=∞, pin5=H, pin6=L - 0.85 1.5 mA
RL=∞, pin5=L, pin6=H - 0.85 1.5 mA
RL=60Ω, pin5=H, pin6=L 6.6 7.2 7.6 V
RL=60Ω, pin5=L, pin6=H 6.6 7.2 7.6 V

=300mA - 1.9 2.3 V
IO=500mA - 1.9 2.3 V
IO=300mA - 0.25 0.5 V
IO=500mA - 0.4 0.65 V

6

Application Information

1. Thermal Shut Down Circuit

I

Q1

V1

R1

Q2

V2

R2

When Ta = 25°C, Q2 & Q3 are Turn-off and output stage operate normally.
V

= I × (R1 + R2)

1

V

= R2 / (R1 + R2) × V1 = 0.37V

2

When Ta = 165°C, Q2 & Q3 become Turn-on and it turn-off the output stage.

0.70V - 0.37V = 330mV (When Q
And temperature coefficient of Q

& Q3 are Turn-on, VbeQ2 = VbeQ3 = 0.70V)

2

= Q3 = −2mV/°C

2

∴ T .S . D: 330mV / 2mV = 165°C

Q3

KA3082

2. Logic Input & Output Table

Input Output

Pin #5 Pin #6 Pin #2 Pin #10

Low Low Low Low Brake

High Low High Low Forward

Low High Low High Reverse

High High Low Low Brake

Input High is above 2.0V.
Input Low is below 0.7V.

Motor

7

KA3082

3. Logic Switch Circuit

SV

CC

V1

5

V

7.4V

Q4

Q5

CTL

V2

Q7

Q6

4

6

This circuit define reference voltage o f output.
When pin #5 is “H” and pin #6 is “L”,

- V1 = V

- V2 = V

+ V

ZD
BEQ 7

BEQ4

+ V

+ V

SATQ6

·=· 8.9V

BEQ5

·=· 0.87V

V1 and V2 are related with the output voltage of the motor and change according to the voltage of pin #4 (V

4. Drive Output Circuit

P

VCC

V1

Q1

Q4

V2

CTL

).

V1 = 8.9V
V

= 0.87V

2

V

= V1 - V

O1

VO2 = V
VO = V

Q6SAT

O1

= V1 - V

- V

BEQ1

O2

BEQ1

- V

- V

IRL = (VO1 - VO2) / R

BEQ2

BEQ2

L

- V

Q6SAT

R1

Q2

V

O1

Q3

Q5

R

L

M

Q6

R2

V

O2

8

Typical Performance Characteristics

CHARACTERISTIC GRAPHS

CHARACTERISTIC GRAPHS

CHARACTERISTIC GRAPHS

CHARACTERISTIC GRAPHS

CHARACTERISTIC GRAPHSCHARACTERISTIC GRAPHS

CHARACTERISTIC GRAPHSCHARACTERISTIC GRAPHS

CC

CC

CC

CC

CC

CC

CC

1.

1. VVVV

1.

1. VVVV

1. 1.

1. 1.

10

10

9

9
8

8
7

7
6

6

(mA)

(mA)

5

5

CC

CC

I

I

4

4
3

3
2

2
1

1

0

0

0 246810 12 14 16 18 20

0 246810 12 14 16 18 20

3.

3. VVVVCTL

3.

3. VVVVCTL

3. 3.

3. 3.

CC

vs

vs IIII

vs

vs IIII

vsvs

vsvs

CCCC

CCCC

CCCC

CCCC

VIN = 0V

VIN = 0V

(V)

(V)

V

V

CC

CC

CTL vs. Vo

vs. Vo 4.

CTL vs. Vo

vs. Vo 4.

vs. Vovs. Vo

vs. Vovs. Vo

CTLCTL

CTLCTL

2.

2. Temperature

Temperature vs

2.

2. Temperature

Temperature vs

2. 2.

TemperatureTemperature

2. 2.

TemperatureTemperature

10

10

9

9
8

8
7

7
6

6

(mA)

(mA)

5

5

CC

CC

I

I

4

4
3

3
2

2
1

1

0

0

-35-15525 456585

-35-15525 456585

4. Temperature vs. Vo

Temperature vs. Vo

4. Temperature vs. Vo

Temperature vs. Vo

4. 4.

Temperature vs. VoTemperature vs. Vo

4. 4.

Temperature vs. VoTemperature vs. Vo

vs IIIICC

CC

vs IIIICC

CC

vsvs

vsvs

CCCC

CCCC

Temp.(

Temp.(

VCC = 12V

VCC = 12V
VIN = 0V

VIN = 0V

°

°

C)

C)

KA3082

12

12
10

10

8

8

(V)

(V)

6

6

O

O

V

V

4

4
2

2

0

0

0 246810 12

0 246810 12

V

V

CTL

CTL

5.

5. IIIIO

O vs. V

vs. VSAT

SAT(UPPER)

5.

5. IIIIO

O vs. V

vs. VSAT

5. 5.

vs. Vvs. V

5. 5.

vs. Vvs. V

OO

OO

3.0

3.0

2.5

2.5

2.0

2.0

(V)

(V)

1.5

1.5

SAT

SAT

V

V

1.0

1.0

0.5

0.5

0.0

0.0

0.2 0.4 0.60.8 1.0 1.2

0.2 0.4 0.60.8 1.0 1.2

(UPPER)

SAT(UPPER)

(UPPER)

SATSAT

SATSAT

(UPPER)(UPPER)

(UPPER)(UPPER)

I

I

O

O

(A)

(A)

(V)

(V)

VCC = 12V

VCC = 12V
VIN = 5V/0V

VIN = 5V/0V

Ω

Ω

R

R

= 60

= 60

L

L

VCC = 12V

VCC = 12V
V

V

= ope

= ope

CTL

CTL

VIN = 5V/0V

VIN = 5V/0V

7.7

7.7

7.6

7.6

7.5

7.5

7.4

7.4

7.3

7.3

7.2

7.2

(V)

(V)

7.1

7.1

O

O

V

V

7.0

7.0

6.9

6.9

6.8

6.8

6.7

6.7

6.6

6.6

6.5

6.5

-35-155 25 456585

-35-155 25 456585
Temp.(

Temp.(

O

O vs. V

vs. VSAT

SAT(LOWER)

O

O vs. V

vs. VSAT

5.

5. IIII

5.

5. IIII

vs. Vvs. V

vs. Vvs. V

5. 5.

5. 5.

OO

OO

1.0

1.0

0.9

0.9

0.8

0.8

0.7

0.7

0.6

0.6

(V)

(V)

0.5

0.5

SAT

SAT

V

V

0.4

0.4

0.3

0.3

0.2

0.2

0.1

0.1

0.0

0.0

0.2 0.4 0.60.8 1.0 1.2

0.2 0.4 0.60.8 1.0 1.2

(LOWER)

SAT(LOWER)

(LOWER)

SATSAT

SATSAT

(LOWER)(LOWER)

(LOWER)(LOWER)

I

I

O

O

(A)

(A)

°

°

C)

C)

VCC = 12V

VCC = 12V
V

V

= 7.4V

= 7.4V

CTL

CTL

VIN = 5V/0V

VIN = 5V/0V
R

R

= 60

= 60

L

L

VCC = 12V

VCC = 12V
V

V

= open

= open

CTL

CTL

VIN = 5V/0V

VIN = 5V/0V

Ω

Ω

9

KA3082

Test Circuits

KA3082

GND VO1VZ1V

1234 56 78910

Typical Application Circuits

CTLVIN1VIN2SVCCPVCCVZ2VO2

C

D

0.1µF

S3

A

S5

S4

A

V

A

IN

S1

A

S2

Z

D

7.4V

KA3082

V

CC

10

GND VO1VZ1V

1 2 3 4 5 6 7 8

CTLVIN1VIN2SVCCPVCCVZ2VO2

0.1µ

M

910

10

V

CC

KA3082

11

KA3082

DISCLAIMER

FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURT HER NOTICE TO ANY
PRODUCTS HEREI N TO IMPROVE RELIABILITY, FUNCTIO N OR DESIGN. FAIRCH IL D DOES NOT ASSUME ANY
LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER
DOES IT CONVEY ANY LICENSE UNDER IT S PATENT RIGHTS, NOR THE RIGHTS OF OTHE RS.

LIFE SUPPORT POL I CY

FAIRCHILD’S PR ODUCTS ARE NOT AUTH ORIZED FOR USE AS C RITICAL COMPONENT S IN LIFE SUPPORT DE VICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORATION. As used herein :

1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and (c) whose failure to
perform when properly used in accordance with

2. A critical component in any component of a life support
device or sy stem whose fai lure to perform can be
reasonably expec ted to cause the failur e of the life support
device or system, or to affect its safety or effec t iv ene ss .

instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.

www.fairchildsemi.com

9/6/02 0.0m 001

 2002 Fairchild Semiconductor Corporation

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