參數(shù)資料
型號(hào)： TDA8924TH/N2,518
廠商： NXP SEMICONDUCTORS
元件分類(lèi)： 音頻／視頻放大
英文描述： 120 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24
封裝： PLASTIC, SOT-566-3, HSOP-24
文件頁(yè)數(shù)： 23/35頁(yè)
文件大?。?/td> 722K
代理商： TDA8924TH/N2,518
2003 Jul 28
3
Philips Semiconductors
Objective specication
2
× 120 W class-D power amplier
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
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
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
General; VP = ±24 V
VP
supply voltage
±12.5 ±24
±30
V
Iq(tot)
total quiescent current
no load connected; note 1
100
mA
η
efciency
Po = 240 W BTL mode
83
%
Stereo single-ended conguration
Po
output power
RL =2 ; THD = 10 %; VP = ±24 V; note 2
120
W
Mono bridge-tied load conguration
Po
output power
RL =4 ; THD = 10 %; note 2
VP = ±24 V
240
W
VP = ±20 V
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
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