Sanyo LA6543 Specifications

Ordering number : EN5973

SANYO Electric Co., Ltd. Semiconductor Business Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

LA6543

Monolithic Linear IC

LA6543

4-Channel Bridge (BTL) Driver for CD-ROM

Overview

The LA6543 is a 4-channel bridge (BTL) driver
developed for CD-ROM applications.

Features and Functions

• Integrated 4-channel power amplifier with bridge
circuit (BTL) (two output stage power supply lines)

• IOmax: 1A

• Integrated level shift circuit

• Integrated muting circuit
MUTE: Output OFF at Low, output ON at High.
MUTE1 is for channels 1 and 2, and MUTE2 for
channels 3 and 4.

• Integrated thermal shutdown circuit

Package Dimensions

unit: mm

3219-QFP34HC

[LA6543]

13.2

10.0

4.8

16

4.0

13.2

1.6

10.0

1.6

1.0

0.8

0.35

24

34

1.0

0.8

1823

0.2

17

8.4

7

2.2

0.1

SANYO : QFP34HC

11.6

0.8

2.45max

• Divided output stage power supply (VS1: CH1, CH2,
CH3; VS2: CH4)

Specifications

Maximum Ratings at Ta = 25°C

Parameter Symbol Conditions Ratings Unit
Maximum supply voltage 1 14 V
Maximum supply voltage 2 14 V
Maximum input voltage 13 V
Mute pin voltage 13 V
Allowable power dissipation Pd max IC only 0.77 W
Operating temperature Topr °C
Storage temperature Tstg °C

VCCmax

VSmax
VINmax

V

MUTE

VS1, 2

Input pins VIN1 to 4

max

–20 to +75

–55 to +150

Operating Conditions at Ta = 25°C

Parameter Symbol Conditions Ratings Unit
Recommended operation voltage 1 4 to 13 V
Recommended operation voltage 2-1 4 to 13 V
Recommended operation voltage 2-2 4 to 13 V

* V

≥ VS1, 2

CC

Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft's
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.

V

VS1
VS2

CC

VS1: CH1 to CH3

VS2: CH4

output reference power supply

N1798RM(KI)

No. 5973-1/7

LA6543

Electrical Characteristics at V

Parameter

VCC no-load current drain

VS1 no-load current drain

V

2 no-load current drain

S

Output offset voltage

Input voltage range Input voltage range for 0.5 5 V
Output voltage (source) Plus and minus outputs at high level 4.4 4.7 V

(si n k ) Plus and minus outputs at low level 0.3 0.6 V

Closed circuit voltage gain1 VG1 Voltage gain between CH1 to CH3 BTL amplifiers 7 dB
Closed circuit voltage gain2 VG2 Voltage gain between CH4 BTL amplifiers 14 dB
Slew rate SR (Note 1) 0.5 V/µs
Mute ON voltage MUTE1, MUTE2 voltage when output is ON (Note 2) 1.5 2 V
Mute ON current MUTE1, MUTE2 voltage when output is ON (Note 2) 6 10 µA

= 12V, VS1 = 5V, VS2 = 12V, Ta = 25˚C

CC

Symbol

ICC1
ICC2

IS1-1
IS1-2

2-1

I

S

IS2-2

V

1 to4

OFF

V

IN

VOsource

V

sink

O

V

MUTE

I

MUTE

All outputs ON (MUTE1, MUTE2: High) 5 10 20 mA
All outputs OFF (MUTE1, MUTE2: Low) 5 10 mA
CH1 ON (MUTE1, MUTE2: High) 20 40 mA
CH1 OFF (MUTE1, MUTE2: Low) 4 mA
CH2 to CH4 ON (MUTE1, MUTE2: High) 5 10 mA
CH2 to CH4 OFF (MUTE1, MUTE2: Low) 4 mA

Potential difference between plus and minus outputs
for CH1 to CH4

I

= 700 mA

O

I

= 700 mA

O

Conditions

1 to VIN4

V

IN

Ratings

min typ max

–50 50 mV

Unit

Note 1: Guaranteed design value
Note 2: MUTE turns amplifier output ON at High and OFF at Low. (At Low, output impedance becomes high.) MUTE1 and MUTE2

operate independently on the respective channels.

1.0

0.8

0.6

0.4

0.2

IC Only

Pd max – Ta

0.77

0.46

Allowable power dissipation, Pd max – W

0

–20 0 20 40 60 80 100

Ambient temperature, Ta – ˚C

No. 5973-2/7

Pin Assignment

24

VG4

25

4

V

IN

26

VG3

MUTE2

VCCRF

23 22 21

LA6543

-IN
REF

RF

V

20 19 18

-OUT
REF

V

17

16

15

8

V

O

7

V

O

2

V

S

V

IN

VG2

V

IN

NC

VG1

V

IN

MUTE1

NC

27

3

28

29

2

30

31

32

1

33

34

1 2 3

2

RF

SS

V

2-OUT

SS

V

Heat sink

LA6543

4 5 6

1

RF

SS

V

1-OUT

SS

V

14

13

12

11

10

9

8

7

NC

6

V

O

5

V

O

4

V

O

3

V

O

1

V

S

2

V

O

1

V

O

Top view

A11146

No. 5973-3/7