Datasheet FAN8082 Datasheet (Fairchild Semiconductor)

FAN8082 (KA3082N)

Bi-directional DC Mo tor Driver

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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 a n exter na l volt age.

• Stable motor dir e c ti on ch a ng e.

• Interfaces with CMOS devices.

• Built-in the thermal shut down circuit (165°C).

• Low standby current. (6.5mA)

Description

The FAN8082 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 controlling the forward/ reverse and braking.

8-DIP-300

Typical Applications

• Compact disk player (CDP) tray or changer

• Low current DC motor such as audio or video equipment.

• General DC motor

Ordering Information

Device Package Operating Temp.

FAN8082 8-DIP-300 −25°C ~ +75°C

Rev. 1.0.1

February. 2000.

1

FAN8082 (KA3082N)

Pin Assignments

GND

V

O1

1

2

8

V

O2

7

PV

CC

FAN8082

V

CTL

3

V

IN1

4

Pin Definitions

Pin Number Pin Name I/O Pin Function Description

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

O1

CTL

IN1 IN2

CC CC

O2

O Output 1

I Motor speed control I Input 1 I Input 2

- Supply voltage (Signal)

- Supply voltage (Power)

O Output 2

6

SV

CC

5

V

IN2

Internal Block Diagram

V

GND

V

O1

CTL

V

IN1

1

2

DRIVER OUT

8

V

O2

7

PV

CC

PRE DRIVER

3

4

TSD

LOGIC SWITCH

BIAS

6

SV

CC

5

V

IN2

2

Equivalent Circuit

Description Pin No. Internal circuit

Output 2, 8

2 8

Speed control 3

FAN8082 (KA3082N)

Vcc

Input 4, 5

SVCC PVCC

Vcc

VCC

3

VCC

4

5

6 7

VCC

6 7

3

FAN8082 (KA3082N)

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

NOTES:

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

1.0

note2

A-

W-

−25 ~ +75 °C-

−55 ~ +125 °C-

Power Dissipation Curve

Pd (mW)

1, 0

SOA

0

0 25 50 75 100 125

Ambient temperature, Ta [°C]

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

Parameter Symbol Operating voltage range Unit

Operating supply voltage

NOTE:

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

CC

≤ SV

note

CC

SV

CC,PVCC

must be opened or 8.5 ≤ V

CTL

150

15

7 ~ 18 V

≤ PV

CC

4

Electrical Characteri sti c s (Ta = 25°°°°C)

Parameter Symbol Conditions Min. Typ. Max. Units

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

CC IN1 IN2 ITH1 ITH2

OL1 OL2

Z1 Z2

O1 O2

SAT1IO

SAT2 SAT3 SAT4

Pin4 & 6: GND, RL=∞ 46.59.5mA RL=∞, Pin4=I RL=∞, Pin4=L, Pin5=I RL=∞, Pin4=VIN, Pin5=L 1.0 1.3 1.6 V RL=∞, Pin4=L, Pin5=V RL=∞, Pin4 & 6=GND - 0.01 1 mA RL=∞, Pin4 & 6=GND - 0.01 1 mA RL=∞, Pin4=H, Pin5=L - 0.85 1.5 mA RL=∞, Pin4=L, Pin5=H - 0.85 1.5 mA RL=60Ω, Pin4=H, Pin5=L 6.6 7.2 7.4 V RL=60Ω, Pin4=L, Pin5=H 6.6 7.2 7.4 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

FAN8082 (KA3082N)

, Pin5=L - 10 30 µA

IN1

IN

-1030µA

1.0 1.3 1.6 V

5

FAN8082 (KA3082N)

Application Information

1. THERMAL SHUT DOWN CIRCUIT

I

Q1

V1

R1

Q2

V2

R2

When Ta = 25°C, Q2 & Q3 are Turned-off and output stage operates normally.

= I × (R1 + R2)

V

1

Q3

= R2 / (R1 + R2) × V1 = 0.37V

V

2

When Ta = 165°C, Q2 & Q3 Turn-on and it turns-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

2. LOGIC INPUT & OUTPUT TABLE

Input Output

Pin #4 Pin #5 Pin #2 Pin #8

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.

*Low : All Power TRs are off-state.

But internal Bias makes output Voltage low state.

Motor

6

3. LOGIC SWITCH CIRCUIT

SV

FAN8082 (KA3082N)

CC

V1

4

V

7.4V

Q4

Q5

CTL

V2

Q7

Q6

3

5

This circuit define reference voltage o f output.

When pin #4 is “H” and pin #5 is “L”,

- V1 = Vzd + Vbe

- V2 = Vbeq 7 + Vsat

+ VbeQ5 ·=· 8.9V

Q4

·=· 0.87V

Q6

V1 and V2 are related with the output voltage of the motor and change according to the voltage of pin #3 (V

CTL

).

7

FAN8082 (KA3082N)

4. DRIVE OUTPUT CIRCUIT

V1

Q1

P

VCC

V2

Q4

= 8.9V

V

1

= 0.87V

V

2

= V1 - V

V

O1

VO2 = V

VO = V

Q6SAT

- V

O1

BEQ1

O2

- V

= V1 - V

IRL = (VO1 - VO2) / R

BEQ2

L

BEQ1

- V

BEQ2

- V

R1

Q6SAT

Q2

V

O1

Q3

Q5

R

L

M

Q6

R2

V

O2

8

Typical Perfomance Chracteristics

CHARACTERISTICS GRAPHS

FAN8082 (KA3082N)

1. VCC vs ICC

10

9 8 7 6

5 4

ICC (mA)

3 2 1 0

0246810 12 14 16 18 20

CC (V)

V

VIN = 0V

2. Temperature vs I

CC

10

9 8 7 6 5 4

ICC (mA)

3 2 1 0

-35 -15 5 25 45 65 85

Temp. (°C)

3. VCTL vs. VO 4. Temperature vs. VO

12 10

VO (V)

8 6 4 2

CC = 12V

V V

IN = 5V/0V

R

L = 60Ω

0

2 4 6 8 10 12

VCTL (V)

7.7

7.6

7.5

7.4

7.3

7.2

7.1

O (V)

V

7.0

6.9

6.8

6.7

6.6

6.5

-35 -15 5 25 45 65 85

Temp. (°C)

VCC = 12V V

IN = 0V

V

CC = 12V

V

CTL = 7.4V

V

IN = 5V/0V

R

L = 60Ω

5. IO vs. VSAT (UPPER)

3.0

2.5

2.0

1.5

VSAT (V)

1.0

0.5

0.0

0.2

0.4 0.6 0.8 1.0

O vs. VSAT (LOWER)

6. I

1.0

0.9

0.8

0.7

0.6

0.5

SAT (V)

0.4

V

CC = 12V

V

CTL = open

V

IN = 5V/0V

0.3

0.2

0.1

0.0

1.2

0.2 0.4 0.6 0.8 1.0 1.2

IO (A) IO (A)

9

CC = 12V

V V

CTL = open

V

IN = 5V/0V

FAN8082 (KA3082N)

Test Circuits

S1

A

S2

Z

D

7.4V

GND

1

V

2

O1

PV

8

V

O2

7

CC

FAN8082

S4

SV

6

CC

V

IN2

5

A

V

CC

3

V

CTL

V

IN1

4

S3

A

S5

A

V

IN

10

Application Circuits

GND

1

V

2

O1

3

V

CTL

F AN8082

PV

SV

FAN8082 (KA3082N)

8

V

O2

V

CC

RS

7

6

V

IN1

4

Z

D

IN2

5

104

M

11

FAN8082 (KA3082N)

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.

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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 INTERNATIONAL. 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.

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