參數(shù)資料
型號： TS4984EKIJT
廠商： STMICROELECTRONICS
元件分類： 音頻／視頻放大
英文描述： 1.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA15
封裝： LEAD FREE, FCP-15
文件頁數(shù)： 13/29頁
文件大小： 1751K
代理商： TS4984EKIJT
Application Information
TS4984FC
20/29
4.4
Power dissipation and efficiency
Hypotheses:
●
Voltage and current in the load are sinusoidal (Vout and Iout).
●
Supply voltage is a pure DC source (Vcc).
Regarding the load we have:
and
Therefore, the average current delivered by the supply voltage is:
The power delivered by the supply voltage is:
Then, the power dissipated by each amplifier is:
and the maximum value is obtained when:
and its value is:
Note:
This maximum value is only depending on power supply voltage and load values.
The efficiency,
η, is the ratio between the output power and the power supply:
The maximum theoretical value is reached when
VPEAK = VCC, so that:
V
out
= V
PEAK
sin
ωt
(V)
I
out =
V
out
R
L
-------------
(A)
P
out =
V
PEA K
2
2R
L
-------------------------
(W)
I
CC
AV G
= 2
V
PEAK
πR
L
-------------------
(A)
P
s upply
V
CC
I
CC
AVG
=
W
()
P
diss
P
supply
P
out
–
=
W
()
P
diss
22V
CC
π R
L
-----------------------
P
out
P
out
–
=
W
()
P
dis s
P
out
--------------------- = 0
P
dissmax
2V
cc
2
π2R
L
-------------
=
W
()
η =
P
out
P
supply
-------------------- =
πV
PEAK
4V
CC
-------------------------
π
4
----- = 78.5%
相關(guān)PDF資料
PDF描述
TS4984IQT 1 W, 2 CHANNEL, AUDIO AMPLIFIER, QCC16
TS4990EIKJT 1.2 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9
TS4990EKIJT 1.2 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9
TS4990EIJT 1.2 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9
TS4990IST 1.2 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TS4984FC 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:1.2W Stereo Audio Power Amplifier with Active Low Standby Mode
TS4984IQT 功能描述:音頻放大器 2x1W stereo audio Pwr amp RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
TS4985 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2x1.2w Stereo Audio Power Amplifier with Dedicated Standby Pins
TS4985EIJT 功能描述:音頻放大器 2x1.2W stereo audio RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
TS4985EIKJT 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2x1.2w Stereo Audio Power Amplifier with Dedicated Standby Pins
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*