2003 Jul 28

3

Philips Semiconductors

Objective specification

2

× 120 W class-D power amplifier

TDA8924

1

FEATURES

• High efficiency (∼90 %)

• Operating voltage from ±12.5 V to ±30 V

• Very low quiescent current

• Low distortion

• Usable as a stereo Single-Ended (SE) amplifier or as a

mono amplifier in Bridge-Tied Load (BTL)

• Fixed gain of 28 dB in SE and 34 dB in BTL

• High output power

• Good ripple rejection

• Internal switching frequency can be overruled by an

external clock

• No switch-on or switch-off plop noise

• Short-circuit proof across the load and to the supply

lines

• Electrostatic discharge protection

• Thermally protected.

2

APPLICATIONS

• Television sets

• Home-sound sets

• Multimedia systems

• All mains fed audio systems

• Car audio (boosters).

3

GENERAL DESCRIPTION

The TDA8924 is a high efficiency class-D audio power

amplifier with very low dissipation. The typical output

power is 2

× 120 W.

The device comes in a HSOP24 power package with a

small internal heatsink. Depending on supply voltage and

load conditions a very small or even no external heatsink

is required. The amplifier operates over a wide supply

voltage range from

±12.5 V to ±30 V and consumes a very

low quiescent current.

4

QUICK REFERENCE DATA

Notes

1. Quiescent current in application; value strongly depends on circuitry connected to the output pin. This also means

5

ORDERING INFORMATION

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

supply voltage

±12.5 ±24

±30

V

total quiescent current

no load connected; note 1

−

100

−

mA

η

efficiency

−

83

−

%

Stereo single-ended configuration

output power

120

−

W

Mono bridge-tied load configuration

output power

−

240

−

W

−

175

−

W

TYPE

NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

TDA8924TH

HSOP24

plastic thermal enhanced small outline package; 24 leads; low

stand-off height; heatsink

SOT566-3