Fairchild Semiconductor FAN8000D Datasheet

FAN8000D (KA9268D)

4-CH Motor Driver

www.fairchildsemi.com

Features

• Built in 4-CH balanced transformerless(BTL) driver

• Output gain adjustable

• Built in normal OP-amp

• Built in mute function

• Built in level shift circuit

• Built in thermal shutdown function

• Operating ra nge 4.5~13.2V

Description

The FAN8000D is a monolithic integrated circuit, suitable
for 4-CH motor driver which drives tracking actuator, focus
actuator, sled motor and tray motor of CD/CD-ROM/DVD
system.

28-SSOPH-375

Target Application

• Compact disk player

• Video compact disk player

• Digital Video Disk Player

• Car compact disk player

©2000 Fairchild Semiconductor International

Ordering Information

Device Package Operating Temp.

FAN8000D 28-SSOPH-375 −40°C ~ +85°C

FAN8000DTF 28-SSOPH-375 −40°C ~ +85°C

Rev. .1.0.1

February. 2000.

1

FAN8000D (KA9268D)

Pin Assignments

GND3

DO4.2

1234567 891011121314

DO1.1

DO1.2

Pin Definitions

)

FIN

(GND)

DO4.2

DI4.2

DI4.1

CC2

VREF

V

CC1

V

DI3.2

DI3.1

DO3.2

DO3.1

−

OPIN (+)

OPIN (

1516171819202122232425262728

FAN8000D

REG

DI1.1

DI1.2

REO

MUTE

FIN

(GND)

GND1

DI2.1

DI2.2

DO2.1

GND2

DO2.2

OPOUT

Pin Number Pin Name I/O Pin Function Descrition

1 DO1.1 O Drive output
2 DO1.2 O Drive output
3 DI1.1 I Drive input
4 DI1.2 I Drive input
5 REG - Regulator
6 REO O Regulator output
7MUTEIMute
8 GND1 - Ground 1

9 DI2.1 I Drive input
10 DI2.2 I Drive input
11 DO2.1 O Drive output
12 DO2.2 O Drive output
13 GND2 - Ground 2
14 OPOUT O Op-amp output
15 OPIN(−) I Op-amp input (−)
16 OPIN(+) I Op-amp input (+)
17 DO3.1 O Drive output
18 DO3.2 O Drive output
19 DI3.1 I Drive input
20 DI3.2 I Drive input
21 V
22 V

CC1
CC2

- Supply voltage

- Supply voltage
23 VREF I 2.5V bias voltage
24 DI4.1 I Drive input

2

Pin Definitions (Continued)

Pin Number Pin Name I/O Pin Function Descrition

25 DI4.2 I Drive input
26 DO4.1 O Drive output
27 DO4.2 O Drive output
28 GND3 - Ground 3

Internal Block Diagram

FIN

GND3

DO4.2

DO4.1

DI4.2

DI4.1

VREF

10k

+

−

Level
shift

+

−

Level
shift

+

−

12 345 6 8 9 10 11 12 13714

DO1.1

DO1.2

10k

−

+

10k

10k

DI1.1

DI1.2

Regulator

−

REG

TSD

+

10k

REO

22232425262728

VCC2

10k

MUTE

(GND)

+

Mute

50k

(GND)

FIN

−

50k

VCC1

GND1

DI3.2

DI3.1

DO3.2

10k

+

−

Level

10k

10k

10k

DI2.1

DI2.2

shift

−

+

−

+

Level
shift

+

−

DO2.1

FAN8000D (KA9268D)

DO3.1

DO2.2

OPIN(+)

+

GND2

15161718192021

−

OPIN (−)

OPOUT

3

FAN8000D (KA9268D)

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Driver input Driver output

VCC

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25

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9204

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11.8k

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26 27

REF1

Regulator Regulator output

VCC

VCC VCC

53k

50

5

23k

10k

VCC

6

50

10k

10k

2k

VCC

2k

Mute input Bias input

VCC

50

7

50k

50k

100k

23

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4