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TFA9843J

2-channel audio amplifier (SE: 1 W to 20 W or BTL: 4 W to 40 W)

NXP Semiconductors. 

Philips Semiconductors

TFA9843J

2-channel audio amplifier (2 x SE or 1 x BTL)

13. Application information

13.1 Application diagrams

220 nF IN1+ 4

Vi

60 kΩ

220 nF IN2+ 1

Vi

60 kΩ

CIV 3

MODE 7

VCC

9

VREF

STANDBY

MUTE

ON

100 nF

VCC

1000 µF

8 OUT1+

1000 µF +

RL

−

4Ω

2 OUT2−

SHORT-CIRCUIT

AND

TEMPERATURE

PROTECTION

1000 µF −

RL

+

4Ω

VCC

MICRO-

CONTROLLER

TFA9843J

0.5VCC 6 SVR

22 µF

5

150 µF

GND

Fig 19. SE application diagram.

mce503

Remark: Switching inductive loads, the output voltage can rise beyond the maximum

supply voltage of 28 V. At high supply voltage it is recommended to use (Schottky)

diodes to the supply voltage and ground.

9397 750 12587

Preliminary data

Rev. 02 — 19 January 2004

© Koninklijke Philips Electronics N.V. 2004. All rights reserved.

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