參數(shù)資料
型號： TDA7491P
廠商： STMICROELECTRONICS
元件分類： 音頻／視頻放大
英文描述： 10 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO36
封裝： ROHS COMPLIANT, SSOP-36
文件頁數(shù)： 32/40頁
文件大?。?/td> 714K
代理商： TDA7491P
Applications information
TDA7491P
38/40
Doc ID 13540 Rev 4
7.9
Heatsink requirements
A thermal resistance of 24 °C/W can be obtained using the PCB copper ground layer with
16 vias connecting it to the contact area for the exposed pad. Ensure that the copper ground
area is a nominal 9 cm2 for 24 °C/W.
Figure 58 shows the derating curves for copper areas of 4 cm2 and 9 cm2.
As with most amplifiers, the power dissipated within the device depends primarily on the
supply voltage, the load impedance and the output modulation level.
The maximum estimated power dissipation for the TDA7491P is less than 2 W. When
properly mounted on the above PCB the junction temperature could increase by 48 °C.
However, with a musical program the dissipated power is about 40% less than this, leading
to a temperature increase of around only 30 °C. So even at the maximum recommended
ambient temperature for consumer applications of 50 °C there is still a clear safety margin
before the maximum junction temperature (150 °C) is reached.
Figure 58.
Power derating curves for PCB used as heatsink
0
1
2
3
4
5
6
7
8
0
20
40
60
80
100
120
140
160
g
Pd (W)
Tamb ( °C)
Copper Area 2x2 cm
and via holes
TDA7491P
PSSO36
Copper Area 3x3 cm
and via holes
TDA7491P
PowerSSO-36
相關(guān)PDF資料
PDF描述
TDA749213TR 50 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO36
TDA7492 50 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO36
TDA7492MV13TR 50 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO36
TDA7492MV 50 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO36
TDA7492P 25 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO36
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDA7491P13TR 功能描述:音頻放大器 20W Dual BTL Class D 18V VCC Audio 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
TDA7492 功能描述:音頻放大器 50W + 50W Dual BTL Class-D 4-Select dB 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
TDA749213TR 功能描述:音頻放大器 50W + 50W Dual BTL Class-D 4-Select dB 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
TDA7492ETR 功能描述:IC AUDIO AMP CLASS D 36POWERSSO 制造商:stmicroelectronics 系列:- 包裝:剪切帶（CT） 零件狀態(tài):在售 類型:D 類 輸出類型:1-通道（單聲道） 不同負(fù)載時的最大輸出功率 x 通道數(shù):50W x 1 @ 6 歐姆 電壓 - 電源:10 V ~ 26 V 特性:消除爆音，差分輸入，靜音，短路和熱保護(hù)，待機(jī) 安裝類型:表面貼裝 工作溫度:0°C ~ 70°C（TA） 供應(yīng)商器件封裝:PowerSSO-36 EPU 封裝/外殼:36-FSOP（0.295"，7.50mm 寬）裸露焊盤 標(biāo)準(zhǔn)包裝:1
TDA7492MV 功能描述:音頻放大器 50W Mono BTL Class D 10 to 26V 4Select dB 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
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