Philips TDA8543 User Manual

DATA SH EET

INTEGRATED CIRCUITS

TDA8543

2 W BTL audio amplifier

Product specification 1997 Jun 12

NXP Semiconductors Product specification

2 W BTL audio amplifier TDA8543

FEATURES

• Flexibility in use

• Few external components

• Low saturation voltage of output stage

• Gain can be fixed with external resistors

• Standby mode controlled by CMOS compatible levels

GENERAL DESCRIPTION

The TDA8543(T) is a one channel audio power amplifier
for an output power of 2 W with an 8 Ω load at a 7.5 V
supply. The circuit contains a BTL amplifier with
a complementary PNP-NPN output stage and
standby/mute logic. The TDA8543T comes in a 16 pin
SO package and the TDA8543 in a 16 pin DIP package.

• Low standby current

• No switch-on/switch-off plops

• High supply voltage ripple rejection

• Protected against electrostatic discharge

• Outputs short-circuit safe to ground, V

CC

and across

APPLICATIONS

• Portable consumer products

• Personal computers

• Telephony.

the load

• Thermally protected.

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

CC

I

q

I

stb

P

o

THD total harmonic distortion P

supply voltage 2.2 5 18 V
quiescent current VCC=5V − 812mA
standby current −−10 μA
output power THD = 10%

=8Ω; VCC=5V 1 1.2 − W

R

L

R

=8Ω; VCC=7.5V − 2.2 − W

L

=16Ω; VCC=9V − 2.0 − W

R

L

=0.5W − 0.15 − %

o

SVRR supply voltage ripple rejection 50 −−dB

ORDERING INFORMATION

TYPE

NUMBER

NAME DESCRIPTION VERSION

PACKAGE

TDA8543T SO16 plastic small outline package; 16 leads; body width 3.9 mm SOT109-1
TDA8543 DIP16 plastic d ual in-line package; 16 leads (300 mil); long body SOT38-1

1997 Jun 12 2

NXP Semiconductors Product specification

MGK402

MGK401

2 W BTL audio amplifier TDA8543

BLOCK DIAGRAM

handbook, halfpage

−

6

IN−
IN+

V

CC

−

5

+

12

TDA8543

R

11

OUT−

R

20 kΩ

4

SVR

20 kΩ

MODE

3

STANDBY/MUTE LOGIC

Fig.1 Block diagram.

PINNING

SYMBOL PIN DESCRIPTION

n.c. 1 not connected
n.c. 2 not connected
MODE 3 operating mode select (standby,

mute, operating)

SVR 4 half supply voltage, decoupling

ripple rejection
IN+ 5 positive input
IN− 6 negative input
n.c. 7 not connected
n.c. 8 not connected
n.c. 9 not connected
n.c. 10 not connected
OUT− 11 negative loudspeaker terminal
V

CC

12 supply voltage
GND 13 ground
OUT+ 14 positive loudspeaker terminal
n.c. 15 not connected
n.c. 16 not connected

−

−

+

handbook, halfpage

14

OUT+

13
GND

n.c.

1

n.c.

2
3

MODE

4

SVR

IN+
IN−
n.c.
n.c.

5
6
7
8

TDA8543

Fig.2 Pin configuration.

16

n.c.

15

n.c

14

OUT+

13

GND

12

V

CC

11

OUT−

10

n.c.

9

n.c

1997 Jun 12 3

NXP Semiconductors Product specification

2 W BTL audio amplifier TDA8543

FUNCTIONAL DESCRIPTION

The TDA8543(T) is a BTL audio power amplifier capable
of delivering an output power between 1 and 2 W,
depending on supply voltage, load resistance
and package. Using the MODE pin the device can
be switched to standby and mute condition. The device
is protected by an internal thermal shutdown protection
mechanism.
The gain can be set within a range from 6 dB to 30 dB
by external feedback resistors.

The voltage loss on the positive supply line is
the saturation voltage of a PNP power transistor,
on the negative side the saturation voltage of an
NPN power transistor.

Mode select pin

The device is in standby mode (with a very low current
consumption) if the voltage at the MODE
pin is >(V

− 0.5 V), or if this pin is floating. At a MODE

CC

voltage level of less than 0.5 V the amplifier is fully
operational.

Power amplifier

The power amplifier is a Bridge Tied Load (BTL) amplifier
with a complementary PNP-NPN output stage.

In the range between 1.5 V and V
is in mute condition. The mute condition is useful to
suppress plop noise at the output, caused by charging of
the input capacitor.

− 1.5 V the amplifier

CC

LIMITING VALUES

In accordance with the Absolu te Maximum Rating System (IEC 134).

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

V
V
I

ORM

T
T
V
P

CC
I

stg
amb
psc
tot

supply voltage operating −0.3 +18 V
input voltage −0.3 VCC+0.3 V
repetitive peak output current − 1A
storage temperature non-operating −55 +150 °C
operating ambient temperature −40 +85 °C
AC and DC short-circuit safe voltage − 10 V
total power dissipation SO16 − 1.2 W

DIP16 − 2.2 W

QUALITY SPECIFICATION

In accordance with “SNW-FQ-611-E”. The number of the quality specification can be found in the “Quality Reference
Handbook”. The handbook can be ordered using the code 9397 750 00192.

THERMAL CHARACTERISTICS

SYMBOL PARAMETER CONDITIONS VALUE UNIT

R

th j-a

thermal resistance from junction to ambient in free air

TDA8543T (SO16) 100 K/W
TDA8543 (DIP16) 55 K/W

1997 Jun 12 4

NXP Semiconductors Product specification

MGK410

2 W BTL audio amplifier TDA8543

2.5

handbook, halfpage

P

(W)

2.0

1.5

(1)

1

0.5

0

0 40 80 160

(2)

120

T

(°C)

amb

(1) DIP16.
(2) SO16.

Table 1

(V) RL (Ω)P

V

CC

5 8 1.2 0.7 80 112

7.582.21.6− 62

7.5161.40.960100

9162.01.3− 78

9251.30.960100

Note

1. At THD = 10%; BTL.

Fig.3 Power derating curve.

CONTINUOUS SINE WAVE DRIVEN

(1)

(W)

o

P

(W)

max

T

amb(max)

(°C)

SO16 DIP16

1997 Jun 12 5

NXP Semiconductors Product specification

2 W BTL audio amplifier TDA8543

DC CHARACTERISTICS

=5V; T

V

CC

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

CC

I

q

I

stb

V

O

⎪V
I
V

I

OUT+

, I

IN+

MODE

MODE

− V

IN−

Notes

1. With a load connected at the outputs the quiescent current will increase, the maximum of this increase being equal
to the DC output offset voltage divided by R

2. The DC output voltage with respect to ground is approximately 0.5 × V

=25°C; RL=8Ω; V

amb

= 0 V; G = 20 dB; measured in test circuit Fig.4; unless otherwise specified.

MODE

supply voltage operating 2.2 5 18 V
quiescent current RL= ∞; note 1 − 812mA
standby current V

MODE=VCC

−−10 μA

DC output voltage note 2 − 2.2 − V

⎪ differential output voltage offset −−50 mV

OUT−

input bias current −−500 nA
input voltage mode select operating 0 − 0.5 V

mute 1.5 − V
standby V

input current mode select 0 < V

.

L

MODE<VCC

− 0.5 − V

CC

−−20 μA

.

CC

CC
CC

− 1.5 V
V

AC CHARACTERISTICS

V

CC

=5V; T

=25°C; RL=8Ω; f = 1 kHz; V

amb

= 0 V; G = 20 dB; measured in test circuit Fig.4; unless otherwise

MODE

specified.

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

P

o

output power THD = 10 %;

=5V; RL=8Ω 11.2− W

V

CC

= 7.5 V; RL=8Ω− 2.2 − W

V

CC

=9V; RL=16Ω− 2.0 − W

V

CC

THD = 0.5%;

=5V; RL=8Ω 0.6 0.9 − W

V

CC

= 7.5 V; RL=8Ω− 1.7 − W

V

CC

=9V; RL=16Ω− 1.4 − W

V

CC

THD total harmonic distortion P
G

v

Z

i

V

no

closed loop voltage gain note 1 6 − 30 dB
differential input impedance − 100 − kΩ
noise output voltage note 2 −−100 μV

=0.5W − 0.15 0.3 %

o

SVRR supply voltage ripple rejection note 3 50 −−dB

note 4 40 −−dB

V

o

output voltage in mute condition note 5 −−200 μV

1997 Jun 12 6