Fairchild Semiconductor FAN8045G3 Datasheet

FAN8045G3

4-CH Motor Driver (5 Input & 4 Output)

www.fairchildsemi.com

Features

• 4-CH Balanced Transformerless (BTL) Driver

• Optional Input (CH4,5) For Output CH4

• Operating Supply Voltage : 4.5 V ~ 14V

• Built-in Thermal Shut Down Circuit (TSD)

• Built-in Channel Mute Circuit

• Built-in 1-OP AMP

• TSD Monitering Function

Description

The FAN8045G3 is a monolithic integrated circuit suitable for a 4-CH motor driver which drives a tracking actuator, a focus actuator, a sled motor, a spindle motor, and a tray motor of the CDP/CAR-CD/DVDP systems.

28-SSOPH-375SG2

Typical Application

• Compact Disk Player

• Video Compact Disk Player

• Car Compact Disk Player

• Digital Video Disk Player

Ordering Information

Device Package Operating Temp.

FAN8045G3 28-SSOPH-375-SG2 -35°C ~ +85°C

FAN8045G3X

FAN8045G3_NL

FAN8045G3X_NL 28-SSOPH-375-SG2 -35°C ~ +85°C

Notes:

1. X : Tape&Reel

2. NL : Lead free

note1

28-SSOPH-375-SG2 -35°C ~ +85°C

note2

28-SSOPH-375-SG2 -35°C ~ +85°C

Rev. 1.0.1

FAN8045G3

Pin Assignments

MUTE3SW45

28 27 26 25 24 23 22 21 20 19 18 17 16 15FIN

IN5

FAN8045G3

1 2 3 4 5 6 7 8 9 10 11 12 13 14FIN

REF1 IN1 IN2

OPIN- OPOUT GND PVcc1

OPIN+

DO2-

DO3+DO3-

DO2+

DO4-

DO1-

DO4+

DO1+

PVcc2SVccIN3IN4REF2

MUTE4

MUTE

12

GND

2

Pin Definitions

Pin Number Pin Name I/O Pin Function Description

1 REF1 I Bias Voltage Input

2 IN1 I CH1 Input

3 IN2 I CH2 Input

4 OPIN+ I Nomal OP-AMP Input(+)

5 OPIN- I Nomal OP-AMP Input(-)

6 OPOUT O Nomal OP-AMP Output

7 GND - Signal Ground

8 PVcc1 - Power Vcc (CH1,CH2)

9MUTE12IMute 1,2

10 GND - Power GND(CH1,CH2)

11 DO2- O CH2 Drive Output (-)

12 DO2+ O CH2 Drive Output (+)

13 DO1- O CH1 Drive Output (-)

14 DO1+ O CH1 Drive Output (+)

15 DO4+ O CH4 Drive Output (+)

16 DO4- O CH4 Drive Output (-)

17 DO3+ O CH3 Drive Output (+)

18 DO3- O CH3 Drive Output (-)

19 GND - Power GND(CH3,CH4)

20 MUTE4 I Mute 4

21 PVcc2 - Power Vcc (CH3,CH4)

22 SVcc - Signal Vcc

23 IN3 I CH3 Input

24 IN4 I CH4 Input

25 REF2 I REF2

26 IN5 I CH5 Input

27 MUTE3 I Mute 3

28 SW45 I Select Switch For 4,5CH

FAN8045G3

3

Internal Block Diagram

FAN8045G3

SW45

MUTE3

IN5

REF2

IN4

IN3

SVCC

28 27 26 25 24 23 22 21 20 19 18 17 16 15FIN

SW45 MUTE3

5K

20K

5K

20K

sw45

10K

tsd

monitor

SVCC

5K

20K

10K

GND

1 2 3 4 5 6 7 8 9 10 11 12 13 14FIN

REF1

IN1

IN2

OPIN+

OPIN-

OPOUT

GND

20K

PVCC2

PVCC1

PVCC2

MUTE4

PVCC1

MUTE

12

MUTE4

GND

MUTE12

GND

LEVEL SHIFT

GND

DO3-

DO2-

DO3+

LEVEL SHIFT

DO2+

DO4-

DO1-

DO4+

DO1+

4

FAN8045G3

Equivalent Circuits

BTL Driver Output SW45

SVCC PVCC

20K

30K

11 12

13 14

15 16

17 18

28

100K

BTL Input(CH1,2) BTL Input(CH3,4)

SVCC

2

3

5K

2K

1K

2K

23

24

26

10K

1K 1K

SVCC

2K 2K

Mute Reference

20

27

9

50

50K

1

25

50K

5