參數(shù)資料
型號(hào)： TDA7563AH
廠商： STMICROELECTRONICS
元件分類： 音頻／視頻放大
英文描述： 50 W, 4 CHANNEL, AUDIO AMPLIFIER, ZFM27
封裝： ROHS COMPLIANT, FLEXIWATT-27
文件頁數(shù)： 13/35頁
文件大?。?/td> 523K
代理商： TDA7563AH
Thermal protection
TDA7563A
5
Thermal protection
Thermal protection is implemented through thermal foldback (Figure 28).
Thermal foldback begins limiting the audio input to the amplifier stage as the junction
temperatures rise above the normal operating range. This effectively limits the output power
capability of the device thus reducing the temperature to acceptable levels without totally
interrupting the operation of the device.
The output power will decrease to the point at which thermal equilibrium is reached.
Thermal equilibrium will be reached when the reduction in output power reduces the
dissipated power such that the die temperature falls below the thermal foldback threshold.
Should the device cool, the audio level will increase until a new thermal equilibrium is
reached or the amplifier reaches full power. Thermal foldback will reduce the audio output
level in a linear manner.
Three Thermal warning are available through the I2C bus data.
Figure 28.
Thermal foldback diagram
Tj ( °C)
TH. SH.
START
TH. SH.
END
Vout
TH. WARN.
ON
Tj ( °C)
Vout
Tj ( °C)
SD
(with same input
signal)
< TSD
CD out
TH. WARN.
ON
TH. WARN.
ON
125°
140°
155°
> T
相關(guān)PDF資料
PDF描述
TDA7563APD 50 W, 4 CHANNEL, AUDIO AMPLIFIER, PDSO36
TDA7563ASMTR 50 W, 4 CHANNEL, AUDIO AMPLIFIER, ZFM27
TDA7563ASM 50 W, 4 CHANNEL, AUDIO AMPLIFIER, ZFM27
TDA7563A 50 W, 4 CHANNEL, AUDIO AMPLIFIER, ZFM27
TDA7563BH 50 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM27
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDA7563APD 功能描述:音頻放大器 4 x 50W Multi Quad Power Amplifer D 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
TDA7563APDTR 功能描述:音頻放大器 4x28V 4Ohm 14.4V High Eff Quad 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
TDA7563ASM 功能描述:音頻放大器 4 x 50W Multi Quad Power Amplifer D 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
TDA7563ASMTR 功能描述:音頻放大器 4 x 50W Multi Quad Power Amplifer D 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
TDA7563B 功能描述:音頻放大器 4 x 50W Multi Quad Power Amplifer D 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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