TDA8924 Просмотр технического описания (PDF) - Philips Electronics

Номер в каталоге

Компоненты Описание

производитель

TDA8924

2×120 W class-D power amplifier

Philips Electronics 

Philips Semiconductors

2 × 120 W class-D power amplifier

Objective specification

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

SYMBOL

PARAMETER

CONDITIONS

MIN. TYP. MAX. UNIT

General; VP = ±24 V

VP

Iq(tot)

η

supply voltage

total quiescent current

efficiency

Stereo single-ended configuration

no load connected; note 1

Po = 240 W BTL mode

±12.5 ±24 ±30 V

−

100 −

mA

−

83

−

%

Po

output power

RL = 2 Ω; THD = 10 %; VP = ±24 V; note 2 −

120 −

W

Mono bridge-tied load configuration

Po

output power

RL = 4 Ω; THD = 10 %; note 2

VP = ±24 V

VP = ±20 V

−

240 −

W

−

175 −

W

Notes

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

that quiescent dissipation of the chip is lower than the VP × Iq.

2. Output power is measured indirectly; based on RDSon measurement.

5 ORDERING INFORMATION

TYPE

NUMBER

TDA8924TH

NAME

HSOP24

PACKAGE

DESCRIPTION

plastic thermal enhanced small outline package; 24 leads; low

stand-off height; heatsink

VERSION

SOT566-3

2003 Jul 28

3

Share Link: